/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-patterns/array3_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:21:13,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:21:13,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:21:13,714 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:21:13,715 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:21:13,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:21:13,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:21:13,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:21:13,744 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:21:13,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:21:13,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:21:13,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:21:13,756 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:21:13,759 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:21:13,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:21:13,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:21:13,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:21:13,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:21:13,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:21:13,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:21:13,784 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:21:13,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:21:13,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:21:13,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:21:13,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 11:21:13,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:21:13,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:21:13,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:21:13,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 11:21:13,849 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:21:13,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:21:13,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:21:13,850 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:21:13,851 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:21:13,851 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:21:13,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:21:13,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:21:13,852 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:21:13,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:21:13,853 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:21:13,853 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:21:13,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:21:13,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:21:13,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:21:13,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:21:13,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:21:13,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:21:13,855 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:21:13,855 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:21:13,855 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:21:13,855 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:21:13,855 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:21:13,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:21:13,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:21:13,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:21:13,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:21:13,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:21:13,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:21:13,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:21:13,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:21:13,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:21:13,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:21:13,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:21:14,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:21:14,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:21:14,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:21:14,256 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:21:14,256 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:21:14,258 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array3_pattern.c [2022-10-16 11:21:14,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad5f9ff/ac59f1f869204d15864539e289238b1e/FLAGd70cf7cca [2022-10-16 11:21:14,954 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:21:14,955 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c [2022-10-16 11:21:14,966 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad5f9ff/ac59f1f869204d15864539e289238b1e/FLAGd70cf7cca [2022-10-16 11:21:15,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57ad5f9ff/ac59f1f869204d15864539e289238b1e [2022-10-16 11:21:15,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:21:15,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:21:15,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:21:15,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:21:15,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:21:15,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,305 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f76163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15, skipping insertion in model container [2022-10-16 11:21:15,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:21:15,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:21:15,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-10-16 11:21:15,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:21:15,602 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:21:15,616 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array3_pattern.c[1393,1406] [2022-10-16 11:21:15,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:21:15,647 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:21:15,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15 WrapperNode [2022-10-16 11:21:15,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:21:15,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:21:15,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:21:15,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:21:15,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,701 INFO L138 Inliner]: procedures = 17, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2022-10-16 11:21:15,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:21:15,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:21:15,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:21:15,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:21:15,715 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,719 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:21:15,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:21:15,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:21:15,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:21:15,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (1/1) ... [2022-10-16 11:21:15,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:21:15,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:15,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 11:21:15,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 11:21:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:21:15,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 11:21:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 11:21:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:21:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:21:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:21:15,877 INFO L130 BoogieDeclarations]: Found specification of procedure square [2022-10-16 11:21:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2022-10-16 11:21:15,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:21:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:21:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:21:15,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:21:16,010 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:21:16,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:21:16,374 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:21:16,383 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:21:16,383 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 11:21:16,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:16 BoogieIcfgContainer [2022-10-16 11:21:16,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:21:16,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:21:16,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:21:16,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:21:16,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:21:15" (1/3) ... [2022-10-16 11:21:16,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7f085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:16, skipping insertion in model container [2022-10-16 11:21:16,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:21:15" (2/3) ... [2022-10-16 11:21:16,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b7f085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:21:16, skipping insertion in model container [2022-10-16 11:21:16,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:21:16" (3/3) ... [2022-10-16 11:21:16,436 INFO L112 eAbstractionObserver]: Analyzing ICFG array3_pattern.c [2022-10-16 11:21:16,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:21:16,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2022-10-16 11:21:16,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:21:16,572 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;@3421f482, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:21:16,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2022-10-16 11:21:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 80 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:21:16,586 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:16,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:16,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:16,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:16,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1134322960, now seen corresponding path program 1 times [2022-10-16 11:21:16,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:16,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63615774] [2022-10-16 11:21:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:16,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:16,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:16,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:21:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:16,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:16,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:16,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63615774] [2022-10-16 11:21:16,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63615774] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:16,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:16,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:21:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298681346] [2022-10-16 11:21:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:16,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:21:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:16,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:21:16,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:21:16,870 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 80 states have internal predecessors, (89), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:16,910 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2022-10-16 11:21:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:21:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-16 11:21:16,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:16,922 INFO L225 Difference]: With dead ends: 170 [2022-10-16 11:21:16,922 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 11:21:16,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:21:16,931 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:16,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:21:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 11:21:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-10-16 11:21:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 46 states have (on average 1.6304347826086956) internal successors, (75), 72 states have internal predecessors, (75), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:16,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2022-10-16 11:21:16,979 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 11 [2022-10-16 11:21:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:16,980 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2022-10-16 11:21:16,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:16,980 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2022-10-16 11:21:16,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:21:16,982 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:16,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:16,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:21:16,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:16,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:16,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1385636974, now seen corresponding path program 1 times [2022-10-16 11:21:16,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:16,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424809247] [2022-10-16 11:21:16,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:16,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:21:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:17,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:17,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:17,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424809247] [2022-10-16 11:21:17,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424809247] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:17,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:17,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:21:17,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135997412] [2022-10-16 11:21:17,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:17,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:21:17,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:17,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:21:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:21:17,205 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:17,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:17,348 INFO L93 Difference]: Finished difference Result 144 states and 153 transitions. [2022-10-16 11:21:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:21:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-10-16 11:21:17,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:17,351 INFO L225 Difference]: With dead ends: 144 [2022-10-16 11:21:17,352 INFO L226 Difference]: Without dead ends: 142 [2022-10-16 11:21:17,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 11:21:17,356 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 59 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 225 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:21:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-16 11:21:17,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 83. [2022-10-16 11:21:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.6) internal successors, (80), 76 states have internal predecessors, (80), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-10-16 11:21:17,391 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 11 [2022-10-16 11:21:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:17,391 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-10-16 11:21:17,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:17,392 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-10-16 11:21:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:21:17,393 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:17,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:17,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:21:17,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:17,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:17,395 INFO L85 PathProgramCache]: Analyzing trace with hash -811202290, now seen corresponding path program 1 times [2022-10-16 11:21:17,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:17,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287600581] [2022-10-16 11:21:17,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:17,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:17,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:17,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:21:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:17,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287600581] [2022-10-16 11:21:17,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287600581] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307948162] [2022-10-16 11:21:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:17,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:17,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:17,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:17,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 11:21:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:17,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:21:17,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:17,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:17,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:17,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:17,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307948162] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:21:17,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:21:17,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:21:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911486992] [2022-10-16 11:21:17,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:17,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:21:17,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:17,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:21:17,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:21:17,926 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:18,117 INFO L93 Difference]: Finished difference Result 281 states and 301 transitions. [2022-10-16 11:21:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:21:18,118 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-10-16 11:21:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:18,122 INFO L225 Difference]: With dead ends: 281 [2022-10-16 11:21:18,122 INFO L226 Difference]: Without dead ends: 280 [2022-10-16 11:21:18,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:21:18,125 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 230 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:18,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 666 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:21:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-10-16 11:21:18,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 94. [2022-10-16 11:21:18,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 61 states have (on average 1.5737704918032787) internal successors, (96), 87 states have internal predecessors, (96), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:18,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2022-10-16 11:21:18,159 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 15 [2022-10-16 11:21:18,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:18,160 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2022-10-16 11:21:18,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:18,160 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2022-10-16 11:21:18,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:21:18,162 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:18,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:18,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:18,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2018067805, now seen corresponding path program 1 times [2022-10-16 11:21:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:18,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753978715] [2022-10-16 11:21:18,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:18,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:18,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:18,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995601764] [2022-10-16 11:21:18,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:18,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:18,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:18,402 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:18,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 11:21:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:18,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:21:18,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:18,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:18,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:18,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753978715] [2022-10-16 11:21:18,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:18,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995601764] [2022-10-16 11:21:18,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995601764] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:18,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:21:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339375361] [2022-10-16 11:21:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:21:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:21:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:21:18,522 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:18,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:18,673 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2022-10-16 11:21:18,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:21:18,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-10-16 11:21:18,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:18,676 INFO L225 Difference]: With dead ends: 183 [2022-10-16 11:21:18,676 INFO L226 Difference]: Without dead ends: 114 [2022-10-16 11:21:18,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-10-16 11:21:18,681 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 118 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:18,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 210 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:21:18,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-16 11:21:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 96. [2022-10-16 11:21:18,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 64 states have (on average 1.5) internal successors, (96), 88 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2022-10-16 11:21:18,714 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 17 [2022-10-16 11:21:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:18,714 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2022-10-16 11:21:18,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2022-10-16 11:21:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:21:18,716 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:18,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:18,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:18,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-10-16 11:21:18,931 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:18,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:18,932 INFO L85 PathProgramCache]: Analyzing trace with hash 622532840, now seen corresponding path program 1 times [2022-10-16 11:21:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:18,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111073900] [2022-10-16 11:21:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:19,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:21:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:19,069 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:19,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:19,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111073900] [2022-10-16 11:21:19,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111073900] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:19,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104409106] [2022-10-16 11:21:19,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:19,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:19,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:19,072 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:19,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 11:21:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:19,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:21:19,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:19,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:19,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104409106] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:19,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:19,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:21:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534251200] [2022-10-16 11:21:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:19,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:21:19,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:21:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:21:19,180 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:19,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:19,263 INFO L93 Difference]: Finished difference Result 114 states and 124 transitions. [2022-10-16 11:21:19,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:21:19,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-10-16 11:21:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:19,265 INFO L225 Difference]: With dead ends: 114 [2022-10-16 11:21:19,265 INFO L226 Difference]: Without dead ends: 113 [2022-10-16 11:21:19,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:21:19,272 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 60 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:19,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 273 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:21:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-16 11:21:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2022-10-16 11:21:19,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.453125) internal successors, (93), 87 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:19,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2022-10-16 11:21:19,295 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 16 [2022-10-16 11:21:19,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:19,296 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2022-10-16 11:21:19,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 11:21:19,299 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2022-10-16 11:21:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:21:19,299 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:19,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:19,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-16 11:21:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:19,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:19,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1354065369, now seen corresponding path program 1 times [2022-10-16 11:21:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:19,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630761960] [2022-10-16 11:21:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:19,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610561442] [2022-10-16 11:21:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:19,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:19,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:19,539 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:19,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 11:21:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:19,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:21:19,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:19,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-16 11:21:19,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:19,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630761960] [2022-10-16 11:21:19,681 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:19,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610561442] [2022-10-16 11:21:19,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610561442] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:19,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:19,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 11:21:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126592555] [2022-10-16 11:21:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:19,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:21:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:21:19,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:21:19,684 INFO L87 Difference]: Start difference. First operand 95 states and 101 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:19,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:19,787 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2022-10-16 11:21:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:21:19,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-10-16 11:21:19,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:19,793 INFO L225 Difference]: With dead ends: 96 [2022-10-16 11:21:19,794 INFO L226 Difference]: Without dead ends: 93 [2022-10-16 11:21:19,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 11:21:19,795 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 104 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:19,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 157 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:21:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-16 11:21:19,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2022-10-16 11:21:19,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 64 states have (on average 1.40625) internal successors, (90), 84 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2022-10-16 11:21:19,815 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 21 [2022-10-16 11:21:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:19,815 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2022-10-16 11:21:19,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:19,816 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2022-10-16 11:21:19,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:21:19,817 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:19,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:19,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:20,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:20,031 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:20,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:20,032 INFO L85 PathProgramCache]: Analyzing trace with hash -973646450, now seen corresponding path program 1 times [2022-10-16 11:21:20,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:20,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11347360] [2022-10-16 11:21:20,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:20,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:20,056 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:20,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703731625] [2022-10-16 11:21:20,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:20,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:20,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:20,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:20,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 11:21:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:20,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:21:20,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:21:20,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:20,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11347360] [2022-10-16 11:21:20,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:20,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703731625] [2022-10-16 11:21:20,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703731625] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:20,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:20,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:21:20,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212944549] [2022-10-16 11:21:20,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:21:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:20,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:21:20,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:21:20,171 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:20,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:20,216 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-10-16 11:21:20,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:21:20,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-10-16 11:21:20,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:20,218 INFO L225 Difference]: With dead ends: 93 [2022-10-16 11:21:20,218 INFO L226 Difference]: Without dead ends: 90 [2022-10-16 11:21:20,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:21:20,220 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 96 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:20,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 71 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:21:20,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-16 11:21:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2022-10-16 11:21:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 64 states have (on average 1.359375) internal successors, (87), 81 states have internal predecessors, (87), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:21:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-10-16 11:21:20,228 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 22 [2022-10-16 11:21:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:20,229 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-10-16 11:21:20,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:20,229 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2022-10-16 11:21:20,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:21:20,230 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:20,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:20,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:20,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:20,445 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1987169507, now seen corresponding path program 1 times [2022-10-16 11:21:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744005920] [2022-10-16 11:21:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:20,461 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:20,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950799926] [2022-10-16 11:21:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:20,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:20,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:20,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:20,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 11:21:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:20,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-16 11:21:20,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:20,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:20,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:20,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:21,001 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:21:21,001 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-10-16 11:21:21,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:21,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:21,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:21,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744005920] [2022-10-16 11:21:21,944 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:21,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950799926] [2022-10-16 11:21:21,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950799926] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:21,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:21,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-10-16 11:21:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443973612] [2022-10-16 11:21:21,946 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:21:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:21:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:21:21,947 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:22,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:22,065 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2022-10-16 11:21:22,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:21:22,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-16 11:21:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:22,067 INFO L225 Difference]: With dead ends: 104 [2022-10-16 11:21:22,067 INFO L226 Difference]: Without dead ends: 103 [2022-10-16 11:21:22,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:21:22,069 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 8 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 465 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 161 Unchecked, 0.1s Time] [2022-10-16 11:21:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-16 11:21:22,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2022-10-16 11:21:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.3108108108108107) internal successors, (97), 91 states have internal predecessors, (97), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:22,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-10-16 11:21:22,078 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 25 [2022-10-16 11:21:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:22,079 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-10-16 11:21:22,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:22,079 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-10-16 11:21:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 11:21:22,080 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:22,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:22,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:22,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:22,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:22,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:22,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1472712494, now seen corresponding path program 1 times [2022-10-16 11:21:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:22,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203755006] [2022-10-16 11:21:22,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:22,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:22,310 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:22,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614061741] [2022-10-16 11:21:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:22,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:22,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:22,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:22,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 11:21:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:22,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 11:21:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:22,385 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:22,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:22,413 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:22,774 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:21:22,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-10-16 11:21:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:22,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:23,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:23,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203755006] [2022-10-16 11:21:23,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:23,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614061741] [2022-10-16 11:21:23,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614061741] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:23,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:23,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-10-16 11:21:23,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103214019] [2022-10-16 11:21:23,113 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:21:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:23,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:21:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-10-16 11:21:23,115 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:23,241 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-10-16 11:21:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:21:23,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-10-16 11:21:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:23,244 INFO L225 Difference]: With dead ends: 103 [2022-10-16 11:21:23,244 INFO L226 Difference]: Without dead ends: 102 [2022-10-16 11:21:23,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:21:23,248 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 6 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:23,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 504 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 195 Unchecked, 0.1s Time] [2022-10-16 11:21:23,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-16 11:21:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-10-16 11:21:23,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 92 states have internal predecessors, (98), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:23,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2022-10-16 11:21:23,259 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 26 [2022-10-16 11:21:23,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:23,260 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2022-10-16 11:21:23,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:23,260 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2022-10-16 11:21:23,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:21:23,265 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:23,265 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:23,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:23,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:23,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:23,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:23,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1590553023, now seen corresponding path program 1 times [2022-10-16 11:21:23,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:23,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483193030] [2022-10-16 11:21:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:23,487 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:23,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979110422] [2022-10-16 11:21:23,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:23,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:23,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:23,489 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:23,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 11:21:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:23,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:21:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:23,584 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:21:23,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:23,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483193030] [2022-10-16 11:21:23,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:23,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979110422] [2022-10-16 11:21:23,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979110422] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:23,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:23,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:21:23,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294301298] [2022-10-16 11:21:23,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:21:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:23,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:21:23,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:21:23,588 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:21:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:23,621 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-10-16 11:21:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:21:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-10-16 11:21:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:23,623 INFO L225 Difference]: With dead ends: 102 [2022-10-16 11:21:23,623 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:21:23,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:21:23,624 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:23,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 55 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:21:23,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:21:23,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-16 11:21:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.28) internal successors, (96), 90 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:23,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-10-16 11:21:23,633 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 27 [2022-10-16 11:21:23,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:23,634 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-10-16 11:21:23,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-16 11:21:23,634 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-10-16 11:21:23,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:21:23,635 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:23,635 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:23,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:23,848 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,SelfDestructingSolverStorable9 [2022-10-16 11:21:23,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:23,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1198072446, now seen corresponding path program 2 times [2022-10-16 11:21:23,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:23,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368180607] [2022-10-16 11:21:23,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:23,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:24,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:21:24,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:24,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:24,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368180607] [2022-10-16 11:21:24,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368180607] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:24,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139411750] [2022-10-16 11:21:24,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:21:24,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:24,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:24,147 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:24,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 11:21:24,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:21:24,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:24,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:21:24,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:24,262 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:21:24,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-10-16 11:21:24,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139411750] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:21:24,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:21:24,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2022-10-16 11:21:24,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225593724] [2022-10-16 11:21:24,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:24,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:21:24,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:24,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:21:24,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:21:24,323 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:21:24,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:24,747 INFO L93 Difference]: Finished difference Result 279 states and 300 transitions. [2022-10-16 11:21:24,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:21:24,748 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2022-10-16 11:21:24,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:24,750 INFO L225 Difference]: With dead ends: 279 [2022-10-16 11:21:24,750 INFO L226 Difference]: Without dead ends: 278 [2022-10-16 11:21:24,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2022-10-16 11:21:24,752 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 608 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:24,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 432 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:21:24,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-10-16 11:21:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 89. [2022-10-16 11:21:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 79 states have internal predecessors, (83), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2022-10-16 11:21:24,779 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 27 [2022-10-16 11:21:24,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:24,780 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2022-10-16 11:21:24,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:21:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2022-10-16 11:21:24,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:21:24,781 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:24,781 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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 11:21:24,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:24,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:24,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:24,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:24,995 INFO L85 PathProgramCache]: Analyzing trace with hash -486899615, now seen corresponding path program 1 times [2022-10-16 11:21:24,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:24,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771993805] [2022-10-16 11:21:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:24,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:25,010 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:25,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981697046] [2022-10-16 11:21:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:25,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:25,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:25,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:25,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 11:21:25,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:25,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:21:25,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:25,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:21:25,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:21:25,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:25,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771993805] [2022-10-16 11:21:25,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:25,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981697046] [2022-10-16 11:21:25,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981697046] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:21:25,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:21:25,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:21:25,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039676039] [2022-10-16 11:21:25,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:21:25,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:21:25,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:25,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:21:25,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:21:25,147 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:25,204 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2022-10-16 11:21:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:21:25,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-16 11:21:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:25,205 INFO L225 Difference]: With dead ends: 90 [2022-10-16 11:21:25,206 INFO L226 Difference]: Without dead ends: 88 [2022-10-16 11:21:25,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:21:25,207 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 88 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:25,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:21:25,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-10-16 11:21:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2022-10-16 11:21:25,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 77 states have internal predecessors, (81), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2022-10-16 11:21:25,216 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 29 [2022-10-16 11:21:25,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:25,216 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2022-10-16 11:21:25,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2022-10-16 11:21:25,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:21:25,217 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:25,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:25,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:25,432 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,SelfDestructingSolverStorable11 [2022-10-16 11:21:25,433 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1795156071, now seen corresponding path program 2 times [2022-10-16 11:21:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:25,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342559267] [2022-10-16 11:21:25,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:25,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:25,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894229033] [2022-10-16 11:21:25,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:21:25,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:25,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:25,450 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:25,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 11:21:25,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:21:25,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:25,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 11:21:25,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:25,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:25,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:25,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:25,610 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:21:25,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:21:25,616 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:21:26,003 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-10-16 11:21:26,004 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2022-10-16 11:21:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:26,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342559267] [2022-10-16 11:21:26,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:26,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894229033] [2022-10-16 11:21:26,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894229033] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:26,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-10-16 11:21:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861185122] [2022-10-16 11:21:26,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:21:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:26,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:21:26,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-10-16 11:21:26,571 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:27,707 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2022-10-16 11:21:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 11:21:27,708 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-10-16 11:21:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:27,709 INFO L225 Difference]: With dead ends: 106 [2022-10-16 11:21:27,709 INFO L226 Difference]: Without dead ends: 105 [2022-10-16 11:21:27,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-10-16 11:21:27,710 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 28 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:27,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 433 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-10-16 11:21:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-16 11:21:27,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2022-10-16 11:21:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 91 states have internal predecessors, (96), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:21:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2022-10-16 11:21:27,722 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 29 [2022-10-16 11:21:27,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:27,722 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2022-10-16 11:21:27,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 14 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:27,723 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2022-10-16 11:21:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:21:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:27,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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 11:21:27,758 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 11:21:27,937 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,SelfDestructingSolverStorable12 [2022-10-16 11:21:27,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:27,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:27,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2085981206, now seen corresponding path program 1 times [2022-10-16 11:21:27,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:27,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524576070] [2022-10-16 11:21:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:27,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:27,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:27,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875374367] [2022-10-16 11:21:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:27,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:27,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:27,958 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:27,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 11:21:28,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:28,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:21:28,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:28,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:28,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:21:28,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524576070] [2022-10-16 11:21:28,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:28,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875374367] [2022-10-16 11:21:28,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875374367] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:21:28,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:21:28,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 11:21:28,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403864317] [2022-10-16 11:21:28,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:28,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 11:21:28,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:28,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 11:21:28,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:21:28,146 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:21:28,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:28,303 INFO L93 Difference]: Finished difference Result 122 states and 129 transitions. [2022-10-16 11:21:28,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 11:21:28,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-10-16 11:21:28,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:28,304 INFO L225 Difference]: With dead ends: 122 [2022-10-16 11:21:28,305 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 11:21:28,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-10-16 11:21:28,306 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 291 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:28,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 83 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:21:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 11:21:28,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2022-10-16 11:21:28,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.1898734177215189) internal successors, (94), 89 states have internal predecessors, (94), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:21:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2022-10-16 11:21:28,321 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 30 [2022-10-16 11:21:28,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:28,322 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2022-10-16 11:21:28,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:21:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2022-10-16 11:21:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:21:28,323 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:28,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:28,359 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 11:21:28,538 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,SelfDestructingSolverStorable13 [2022-10-16 11:21:28,538 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:28,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash 184736726, now seen corresponding path program 2 times [2022-10-16 11:21:28,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:28,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404802387] [2022-10-16 11:21:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:28,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:28,553 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:28,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806511743] [2022-10-16 11:21:28,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:21:28,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:28,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:28,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:28,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 11:21:28,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:21:28,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:28,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2022-10-16 11:21:28,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:28,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:28,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:28,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:28,707 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:21:28,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:21:28,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:21:29,111 INFO L356 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2022-10-16 11:21:29,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 13 [2022-10-16 11:21:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:29,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:29,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:29,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404802387] [2022-10-16 11:21:29,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:29,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806511743] [2022-10-16 11:21:29,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806511743] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:29,407 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:29,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 11:21:29,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274853945] [2022-10-16 11:21:29,407 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:29,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:21:29,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:21:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-10-16 11:21:29,410 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:29,677 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2022-10-16 11:21:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:21:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2022-10-16 11:21:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:29,678 INFO L225 Difference]: With dead ends: 103 [2022-10-16 11:21:29,678 INFO L226 Difference]: Without dead ends: 102 [2022-10-16 11:21:29,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-10-16 11:21:29,682 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 20 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:29,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 459 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 189 Unchecked, 0.1s Time] [2022-10-16 11:21:29,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-16 11:21:29,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 89. [2022-10-16 11:21:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 79 states have internal predecessors, (84), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2022-10-16 11:21:29,696 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 30 [2022-10-16 11:21:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:29,697 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2022-10-16 11:21:29,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:29,697 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2022-10-16 11:21:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:21:29,698 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:29,698 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:29,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:29,911 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,SelfDestructingSolverStorable14 [2022-10-16 11:21:29,911 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:29,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:29,912 INFO L85 PathProgramCache]: Analyzing trace with hash 330522133, now seen corresponding path program 3 times [2022-10-16 11:21:29,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197589459] [2022-10-16 11:21:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:29,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:29,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:29,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772111025] [2022-10-16 11:21:29,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:21:29,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:29,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:29,930 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:29,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 11:21:30,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 11:21:30,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:30,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 11:21:30,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:30,023 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:30,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:30,039 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:30,092 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:21:30,096 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:21:30,194 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:21:30,194 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:21:30,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:21:31,218 INFO L356 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-10-16 11:21:31,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 16 [2022-10-16 11:21:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:31,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:31,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:31,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197589459] [2022-10-16 11:21:31,740 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:31,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772111025] [2022-10-16 11:21:31,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772111025] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:31,741 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:31,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-10-16 11:21:31,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355386047] [2022-10-16 11:21:31,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:31,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 11:21:31,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 11:21:31,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-10-16 11:21:31,743 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:32,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:32,644 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2022-10-16 11:21:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 11:21:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-10-16 11:21:32,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:32,646 INFO L225 Difference]: With dead ends: 121 [2022-10-16 11:21:32,646 INFO L226 Difference]: Without dead ends: 120 [2022-10-16 11:21:32,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2022-10-16 11:21:32,647 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 35 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 689 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 224 Invalid, 0 Unknown, 246 Unchecked, 0.2s Time] [2022-10-16 11:21:32,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-10-16 11:21:32,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 105. [2022-10-16 11:21:32,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.1927710843373494) internal successors, (99), 93 states have internal predecessors, (99), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-16 11:21:32,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 111 transitions. [2022-10-16 11:21:32,660 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 111 transitions. Word has length 33 [2022-10-16 11:21:32,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:32,661 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 111 transitions. [2022-10-16 11:21:32,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 17 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:32,661 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 111 transitions. [2022-10-16 11:21:32,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 11:21:32,662 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:32,662 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:32,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:32,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:32,877 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1656251610, now seen corresponding path program 3 times [2022-10-16 11:21:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050012648] [2022-10-16 11:21:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:32,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:32,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:32,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1540165893] [2022-10-16 11:21:32,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:21:32,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:32,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:32,902 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:32,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 11:21:32,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 11:21:32,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:32,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:21:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:33,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:33,016 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:33,019 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:33,078 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:21:33,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:21:33,083 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:21:33,206 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:21:33,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:21:33,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:21:33,813 INFO L356 Elim1Store]: treesize reduction 50, result has 5.7 percent of original size [2022-10-16 11:21:33,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 16 [2022-10-16 11:21:33,867 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:33,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:34,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050012648] [2022-10-16 11:21:34,122 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:34,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540165893] [2022-10-16 11:21:34,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540165893] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:34,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:34,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-16 11:21:34,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701691054] [2022-10-16 11:21:34,124 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:34,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:21:34,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:34,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:21:34,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:21:34,126 INFO L87 Difference]: Start difference. First operand 105 states and 111 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:34,491 INFO L93 Difference]: Finished difference Result 120 states and 126 transitions. [2022-10-16 11:21:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 11:21:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-10-16 11:21:34,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:34,492 INFO L225 Difference]: With dead ends: 120 [2022-10-16 11:21:34,493 INFO L226 Difference]: Without dead ends: 119 [2022-10-16 11:21:34,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-10-16 11:21:34,494 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:34,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 511 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 163 Invalid, 0 Unknown, 171 Unchecked, 0.1s Time] [2022-10-16 11:21:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-10-16 11:21:34,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 93. [2022-10-16 11:21:34,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 83 states have internal predecessors, (89), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:21:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-10-16 11:21:34,507 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 34 [2022-10-16 11:21:34,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:34,508 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-10-16 11:21:34,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 16 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:34,508 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-10-16 11:21:34,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:21:34,509 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:34,509 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:34,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:34,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:21:34,737 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:34,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:34,738 INFO L85 PathProgramCache]: Analyzing trace with hash 9280233, now seen corresponding path program 1 times [2022-10-16 11:21:34,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:34,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800454913] [2022-10-16 11:21:34,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:34,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:34,751 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:34,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [656174640] [2022-10-16 11:21:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:34,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:34,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:34,753 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:34,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 11:21:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:34,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 11:21:34,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:34,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:34,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:34,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:34,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:21:35,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:21:35,273 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-10-16 11:21:35,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 37 [2022-10-16 11:21:35,312 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:35,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:35,545 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse2 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse1 (* 4 .cse3)) (.cse0 (<= .cse3 2147483647))) (and (or (not .cse0) (forall ((v_ArrVal_579 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse2) 2147483648))) (or (forall ((v_ArrVal_579 (Array Int Int))) (< (+ .cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648)) .cse0)))) is different from false [2022-10-16 11:21:35,711 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((v_ArrVal_579 (Array Int Int)) (|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse0 2147483647))))) .cse2) (or (forall ((v_ArrVal_579 (Array Int Int)) (|ULTIMATE.start_main_~num~0#1| Int)) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_579) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse3) 2147483648) (not (<= .cse3 2147483647))))) (not .cse2))))) is different from false [2022-10-16 11:21:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:38,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800454913] [2022-10-16 11:21:38,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:38,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656174640] [2022-10-16 11:21:38,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656174640] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:38,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:38,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-10-16 11:21:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424874414] [2022-10-16 11:21:38,145 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:21:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:21:38,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=198, Unknown=4, NotChecked=58, Total=306 [2022-10-16 11:21:38,147 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:38,494 INFO L93 Difference]: Finished difference Result 173 states and 184 transitions. [2022-10-16 11:21:38,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:21:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-10-16 11:21:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:38,496 INFO L225 Difference]: With dead ends: 173 [2022-10-16 11:21:38,496 INFO L226 Difference]: Without dead ends: 172 [2022-10-16 11:21:38,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=77, Invalid=307, Unknown=4, NotChecked=74, Total=462 [2022-10-16 11:21:38,498 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 155 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:38,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 341 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 241 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2022-10-16 11:21:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-16 11:21:38,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 132. [2022-10-16 11:21:38,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 108 states have (on average 1.1851851851851851) internal successors, (128), 118 states have internal predecessors, (128), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 11:21:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-10-16 11:21:38,525 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 37 [2022-10-16 11:21:38,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:38,525 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-10-16 11:21:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:38,526 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-10-16 11:21:38,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:21:38,526 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:38,527 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:38,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:38,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 11:21:38,740 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:38,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -500758895, now seen corresponding path program 4 times [2022-10-16 11:21:38,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:38,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664367286] [2022-10-16 11:21:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:38,757 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:38,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513134202] [2022-10-16 11:21:38,758 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:21:38,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:38,759 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:38,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 11:21:38,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:21:38,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:38,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 49 conjunts are in the unsatisfiable core [2022-10-16 11:21:38,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:38,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:38,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:38,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:38,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:21:38,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:21:39,100 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:21:39,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:21:39,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:21:39,257 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:21:39,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 52 [2022-10-16 11:21:39,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-10-16 11:21:40,025 INFO L356 Elim1Store]: treesize reduction 70, result has 4.1 percent of original size [2022-10-16 11:21:40,025 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 19 [2022-10-16 11:21:40,125 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:40,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664367286] [2022-10-16 11:21:41,477 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:41,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513134202] [2022-10-16 11:21:41,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513134202] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:41,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:41,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2022-10-16 11:21:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274688383] [2022-10-16 11:21:41,478 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:41,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 11:21:41,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 11:21:41,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-10-16 11:21:41,479 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:42,181 INFO L93 Difference]: Finished difference Result 164 states and 175 transitions. [2022-10-16 11:21:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 11:21:42,182 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2022-10-16 11:21:42,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:42,183 INFO L225 Difference]: With dead ends: 164 [2022-10-16 11:21:42,183 INFO L226 Difference]: Without dead ends: 163 [2022-10-16 11:21:42,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=112, Invalid=944, Unknown=0, NotChecked=0, Total=1056 [2022-10-16 11:21:42,186 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 48 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 217 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:42,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 717 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 350 Invalid, 0 Unknown, 217 Unchecked, 0.3s Time] [2022-10-16 11:21:42,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-10-16 11:21:42,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 148. [2022-10-16 11:21:42,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.1721311475409837) internal successors, (143), 132 states have internal predecessors, (143), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-16 11:21:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 159 transitions. [2022-10-16 11:21:42,211 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 159 transitions. Word has length 37 [2022-10-16 11:21:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:42,211 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 159 transitions. [2022-10-16 11:21:42,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 20 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 159 transitions. [2022-10-16 11:21:42,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:21:42,212 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:42,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:42,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:42,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:42,426 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:42,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:42,426 INFO L85 PathProgramCache]: Analyzing trace with hash 287687326, now seen corresponding path program 1 times [2022-10-16 11:21:42,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:42,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662610450] [2022-10-16 11:21:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:42,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:42,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581830015] [2022-10-16 11:21:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:42,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:42,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:42,439 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:42,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 11:21:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:21:42,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-16 11:21:42,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:42,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:42,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:42,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:42,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:21:42,897 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:21:42,995 INFO L356 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-10-16 11:21:42,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 37 [2022-10-16 11:21:43,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:43,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:43,251 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse0 (* 4 .cse3)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_685 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) 2147483649 .cse1))) .cse2) (or (forall ((v_ArrVal_685 (Array Int Int))) (< 0 (+ 2147483649 .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) (not .cse2))))) is different from false [2022-10-16 11:21:43,448 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse2 (<= .cse4 2147483647)) (.cse1 (* 4 .cse4))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_685 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= 0 (+ .cse0 2147483648))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) 2147483649 .cse0))))) .cse2) (or (not .cse2) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_685 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) (not (<= 0 (+ .cse3 2147483648)))))))))) is different from false [2022-10-16 11:21:43,765 WARN L833 $PredicateComparison]: unable to prove that (or (<= c_~ARR_SIZE~0 |c_ULTIMATE.start_main_~index~0#1|) (< |c_ULTIMATE.start_main_~index~0#1| 0) (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse2 (<= .cse4 2147483647)) (.cse1 (* 4 .cse4))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_685 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= 0 (+ .cse0 2147483648))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) 2147483649 .cse0))))) .cse2) (or (not .cse2) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_685 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_685) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) (not (<= 0 (+ .cse3 2147483648))))))))))) is different from false [2022-10-16 11:21:43,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:43,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662610450] [2022-10-16 11:21:43,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:43,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581830015] [2022-10-16 11:21:43,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581830015] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:43,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:43,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-16 11:21:43,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137967787] [2022-10-16 11:21:43,770 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:43,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:21:43,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:43,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:21:43,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=199, Unknown=3, NotChecked=90, Total=342 [2022-10-16 11:21:43,771 INFO L87 Difference]: Start difference. First operand 148 states and 159 transitions. Second operand has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:44,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:44,189 INFO L93 Difference]: Finished difference Result 188 states and 200 transitions. [2022-10-16 11:21:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:21:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-10-16 11:21:44,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:44,191 INFO L225 Difference]: With dead ends: 188 [2022-10-16 11:21:44,192 INFO L226 Difference]: Without dead ends: 187 [2022-10-16 11:21:44,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=368, Unknown=3, NotChecked=126, Total=600 [2022-10-16 11:21:44,193 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 212 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:44,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 430 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 258 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-10-16 11:21:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-10-16 11:21:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 148. [2022-10-16 11:21:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 132 states have internal predecessors, (142), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-16 11:21:44,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 158 transitions. [2022-10-16 11:21:44,215 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 158 transitions. Word has length 38 [2022-10-16 11:21:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:44,215 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 158 transitions. [2022-10-16 11:21:44,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 13 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:44,216 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 158 transitions. [2022-10-16 11:21:44,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:21:44,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:44,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:44,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:44,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:44,429 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:44,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:44,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1656343518, now seen corresponding path program 4 times [2022-10-16 11:21:44,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:44,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231732170] [2022-10-16 11:21:44,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:44,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:44,448 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009417319] [2022-10-16 11:21:44,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:21:44,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:44,449 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:44,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-16 11:21:44,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:21:44,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:44,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 55 conjunts are in the unsatisfiable core [2022-10-16 11:21:44,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:44,600 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:44,617 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:44,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:44,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:21:44,689 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:21:44,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:21:44,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:21:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:44,923 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 55 [2022-10-16 11:21:44,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-10-16 11:21:45,438 INFO L356 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2022-10-16 11:21:45,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 38 treesize of output 19 [2022-10-16 11:21:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:45,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:45,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:45,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231732170] [2022-10-16 11:21:45,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:45,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009417319] [2022-10-16 11:21:45,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009417319] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:45,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:45,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-10-16 11:21:45,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276480177] [2022-10-16 11:21:45,802 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:45,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 11:21:45,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:45,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 11:21:45,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2022-10-16 11:21:45,804 INFO L87 Difference]: Start difference. First operand 148 states and 158 transitions. Second operand has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:46,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:46,816 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2022-10-16 11:21:46,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 11:21:46,817 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2022-10-16 11:21:46,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:46,818 INFO L225 Difference]: With dead ends: 162 [2022-10-16 11:21:46,818 INFO L226 Difference]: Without dead ends: 161 [2022-10-16 11:21:46,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=894, Unknown=0, NotChecked=0, Total=992 [2022-10-16 11:21:46,820 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 50 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:46,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1059 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 780 Invalid, 0 Unknown, 60 Unchecked, 0.7s Time] [2022-10-16 11:21:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-10-16 11:21:46,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 136. [2022-10-16 11:21:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 112 states have (on average 1.1785714285714286) internal successors, (132), 122 states have internal predecessors, (132), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-10-16 11:21:46,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 146 transitions. [2022-10-16 11:21:46,852 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 146 transitions. Word has length 38 [2022-10-16 11:21:46,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:46,853 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 146 transitions. [2022-10-16 11:21:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:46,853 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 146 transitions. [2022-10-16 11:21:46,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 11:21:46,855 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:46,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-10-16 11:21:46,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:47,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:47,072 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:47,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:47,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1547655835, now seen corresponding path program 2 times [2022-10-16 11:21:47,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:47,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895398431] [2022-10-16 11:21:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:47,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:47,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:47,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392858552] [2022-10-16 11:21:47,087 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:21:47,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:47,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:47,088 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:47,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-16 11:21:47,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:21:47,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:47,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 11:21:47,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:47,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:21:47,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:21:47,231 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:47,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:21:47,308 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:21:47,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:21:48,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-10-16 11:21:48,290 INFO L356 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2022-10-16 11:21:48,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 40 [2022-10-16 11:21:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:48,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:48,571 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse3)) (.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_809 (Array Int Int))) (< (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_809) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648)) .cse2) (or (forall ((v_ArrVal_809 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_809) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse0) 2147483648)) (not .cse2))))) is different from false [2022-10-16 11:21:48,668 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse2 (* 4 .cse4)) (.cse0 (<= .cse4 2147483647))) (and (or (not .cse0) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_809 (Array Int Int))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_809) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse1 2147483647)))))) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_809 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_809) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse3 2147483647))))) .cse0)))) is different from false [2022-10-16 11:21:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895398431] [2022-10-16 11:21:55,205 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392858552] [2022-10-16 11:21:55,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392858552] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:55,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:55,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-16 11:21:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002007993] [2022-10-16 11:21:55,206 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:55,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:21:55,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:21:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=344, Unknown=9, NotChecked=78, Total=506 [2022-10-16 11:21:55,207 INFO L87 Difference]: Start difference. First operand 136 states and 146 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:21:55,990 INFO L93 Difference]: Finished difference Result 226 states and 239 transitions. [2022-10-16 11:21:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:21:55,994 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-10-16 11:21:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:21:55,996 INFO L225 Difference]: With dead ends: 226 [2022-10-16 11:21:55,996 INFO L226 Difference]: Without dead ends: 225 [2022-10-16 11:21:55,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=88, Invalid=417, Unknown=9, NotChecked=86, Total=600 [2022-10-16 11:21:55,997 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 98 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:21:55,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 524 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 303 Invalid, 0 Unknown, 261 Unchecked, 0.5s Time] [2022-10-16 11:21:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-10-16 11:21:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 160. [2022-10-16 11:21:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 134 states have (on average 1.1492537313432836) internal successors, (154), 144 states have internal predecessors, (154), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-16 11:21:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2022-10-16 11:21:56,042 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 41 [2022-10-16 11:21:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:21:56,043 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2022-10-16 11:21:56,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:21:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2022-10-16 11:21:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 11:21:56,044 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:21:56,044 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:21:56,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-16 11:21:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-10-16 11:21:56,257 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:21:56,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:21:56,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2057694963, now seen corresponding path program 5 times [2022-10-16 11:21:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:21:56,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819273513] [2022-10-16 11:21:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:21:56,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:21:56,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:21:56,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261980983] [2022-10-16 11:21:56,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:21:56,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:21:56,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:21:56,276 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:21:56,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-16 11:21:56,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-16 11:21:56,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:21:56,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 61 conjunts are in the unsatisfiable core [2022-10-16 11:21:56,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:21:56,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:21:56,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:21:56,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:21:56,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:21:56,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:21:56,693 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:21:56,694 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:21:56,698 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:21:56,875 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:21:56,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 52 [2022-10-16 11:21:56,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-10-16 11:21:57,088 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:21:57,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:21:57,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:21:58,207 INFO L356 Elim1Store]: treesize reduction 90, result has 3.2 percent of original size [2022-10-16 11:21:58,208 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 57 treesize of output 22 [2022-10-16 11:21:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:21:58,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:21:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:21:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819273513] [2022-10-16 11:21:58,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:21:58,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261980983] [2022-10-16 11:21:58,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261980983] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:21:58,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:21:58,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-10-16 11:21:58,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468424230] [2022-10-16 11:21:58,655 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:21:58,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 11:21:58,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:21:58,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 11:21:58,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-10-16 11:21:58,657 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:00,072 INFO L93 Difference]: Finished difference Result 192 states and 203 transitions. [2022-10-16 11:22:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 11:22:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-10-16 11:22:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:00,074 INFO L225 Difference]: With dead ends: 192 [2022-10-16 11:22:00,074 INFO L226 Difference]: Without dead ends: 191 [2022-10-16 11:22:00,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-10-16 11:22:00,075 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 57 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:00,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1098 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 570 Invalid, 0 Unknown, 382 Unchecked, 0.9s Time] [2022-10-16 11:22:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-10-16 11:22:00,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 176. [2022-10-16 11:22:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 158 states have internal predecessors, (169), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 187 transitions. [2022-10-16 11:22:00,104 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 187 transitions. Word has length 41 [2022-10-16 11:22:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:00,105 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 187 transitions. [2022-10-16 11:22:00,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 23 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 187 transitions. [2022-10-16 11:22:00,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 11:22:00,106 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:00,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-10-16 11:22:00,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:00,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-16 11:22:00,321 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:00,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash -732690526, now seen corresponding path program 2 times [2022-10-16 11:22:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:00,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653920039] [2022-10-16 11:22:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:00,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:00,336 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:00,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547712857] [2022-10-16 11:22:00,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:22:00,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:00,338 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:00,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-16 11:22:00,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:22:00,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:00,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 11:22:00,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:00,459 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:00,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:00,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:00,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:22:00,538 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:22:00,539 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:22:01,229 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-10-16 11:22:01,412 INFO L356 Elim1Store]: treesize reduction 32, result has 8.6 percent of original size [2022-10-16 11:22:01,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 40 [2022-10-16 11:22:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:01,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:01,717 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse3)) (.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_950 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_950) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1))) (not .cse2)) (or (forall ((v_ArrVal_950 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_950) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1))) .cse2)))) is different from false [2022-10-16 11:22:01,794 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_950 (Array Int Int))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_950) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1)) (not (<= 0 (+ .cse1 2147483648)))))) (not .cse2)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_950 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_950) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse3)) (not (<= 0 (+ .cse3 2147483648)))))) .cse2)))) is different from false [2022-10-16 11:22:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653920039] [2022-10-16 11:22:04,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:04,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547712857] [2022-10-16 11:22:04,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547712857] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:04,339 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:04,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-10-16 11:22:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567767751] [2022-10-16 11:22:04,339 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:04,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 11:22:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 11:22:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=325, Unknown=4, NotChecked=74, Total=462 [2022-10-16 11:22:04,341 INFO L87 Difference]: Start difference. First operand 176 states and 187 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:04,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:04,701 INFO L93 Difference]: Finished difference Result 178 states and 189 transitions. [2022-10-16 11:22:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 11:22:04,702 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-16 11:22:04,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:04,703 INFO L225 Difference]: With dead ends: 178 [2022-10-16 11:22:04,704 INFO L226 Difference]: Without dead ends: 177 [2022-10-16 11:22:04,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=70, Invalid=396, Unknown=4, NotChecked=82, Total=552 [2022-10-16 11:22:04,705 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 19 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:04,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 752 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 317 Unchecked, 0.2s Time] [2022-10-16 11:22:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-16 11:22:04,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2022-10-16 11:22:04,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 159 states have internal predecessors, (170), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:04,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2022-10-16 11:22:04,730 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 42 [2022-10-16 11:22:04,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:04,730 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2022-10-16 11:22:04,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 16 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:04,730 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2022-10-16 11:22:04,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 11:22:04,731 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:04,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:04,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-10-16 11:22:04,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:04,932 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash 635965666, now seen corresponding path program 5 times [2022-10-16 11:22:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:04,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461185349] [2022-10-16 11:22:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:04,954 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:04,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150118328] [2022-10-16 11:22:04,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:22:04,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:04,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:04,956 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:04,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-16 11:22:05,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-16 11:22:05,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:05,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 11:22:05,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:05,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:22:05,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:05,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:22:05,223 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:22:05,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:22:05,228 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:22:05,343 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:22:05,343 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:22:05,347 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:22:05,543 INFO L356 Elim1Store]: treesize reduction 90, result has 23.7 percent of original size [2022-10-16 11:22:05,544 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 54 [2022-10-16 11:22:05,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-10-16 11:22:05,853 INFO L356 Elim1Store]: treesize reduction 150, result has 20.6 percent of original size [2022-10-16 11:22:05,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 57 treesize of output 68 [2022-10-16 11:22:05,860 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 50 [2022-10-16 11:22:11,050 INFO L356 Elim1Store]: treesize reduction 776, result has 0.4 percent of original size [2022-10-16 11:22:11,051 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 110 treesize of output 37 [2022-10-16 11:22:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:11,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:11,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461185349] [2022-10-16 11:22:11,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:11,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150118328] [2022-10-16 11:22:11,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150118328] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:11,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:11,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-10-16 11:22:11,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801283329] [2022-10-16 11:22:11,472 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:11,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:22:11,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:11,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:22:11,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=663, Unknown=1, NotChecked=0, Total=756 [2022-10-16 11:22:11,474 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:12,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:12,570 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2022-10-16 11:22:12,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 11:22:12,571 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2022-10-16 11:22:12,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:12,574 INFO L225 Difference]: With dead ends: 181 [2022-10-16 11:22:12,574 INFO L226 Difference]: Without dead ends: 180 [2022-10-16 11:22:12,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=185, Invalid=1220, Unknown=1, NotChecked=0, Total=1406 [2022-10-16 11:22:12,576 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 50 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:12,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 752 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 405 Unchecked, 0.2s Time] [2022-10-16 11:22:12,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-10-16 11:22:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2022-10-16 11:22:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 139 states have (on average 1.1510791366906474) internal successors, (160), 149 states have internal predecessors, (160), 8 states have call successors, (8), 7 states have call predecessors, (8), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-16 11:22:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 176 transitions. [2022-10-16 11:22:12,616 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 176 transitions. Word has length 42 [2022-10-16 11:22:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 176 transitions. [2022-10-16 11:22:12,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 22 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 176 transitions. [2022-10-16 11:22:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-16 11:22:12,618 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:12,618 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:12,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:12,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:12,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1146498667, now seen corresponding path program 1 times [2022-10-16 11:22:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828927597] [2022-10-16 11:22:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:12,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:12,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:12,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1646782336] [2022-10-16 11:22:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:12,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:12,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:12,846 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:12,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-16 11:22:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:22:12,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 11:22:12,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:12,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:12,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:12,974 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:22:13,257 INFO L356 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-10-16 11:22:13,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 24 [2022-10-16 11:22:13,332 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:22:13,378 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-16 11:22:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:13,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:13,534 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1079 (Array Int Int))) (<= (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_1079) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse0 .cse0)) 9223372036854775807)) is different from false [2022-10-16 11:22:13,575 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1079 (Array Int Int))) (<= (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|) (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* |c_ULTIMATE.start_main_~index~0#1| 4)) (+ (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) |c_ULTIMATE.start_main_#t~mem7#1|))) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_1079) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse0 .cse0)) 9223372036854775807)) is different from false [2022-10-16 11:22:13,608 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1079 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int)) (<= (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|)) (.cse2 (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse1 .cse2 (+ (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~index~0#1|) (select .cse1 .cse2))))) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_1079) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (* .cse0 .cse0)) 9223372036854775807)) is different from false [2022-10-16 11:22:13,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:13,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828927597] [2022-10-16 11:22:13,616 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:13,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646782336] [2022-10-16 11:22:13,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646782336] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:13,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:13,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 11:22:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032955515] [2022-10-16 11:22:13,617 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:13,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:22:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:13,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:22:13,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=306, Unknown=3, NotChecked=114, Total=506 [2022-10-16 11:22:13,619 INFO L87 Difference]: Start difference. First operand 165 states and 176 transitions. Second operand has 15 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:13,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:13,984 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2022-10-16 11:22:13,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 11:22:13,985 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-16 11:22:13,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:13,986 INFO L225 Difference]: With dead ends: 189 [2022-10-16 11:22:13,986 INFO L226 Difference]: Without dead ends: 188 [2022-10-16 11:22:13,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=432, Unknown=3, NotChecked=138, Total=702 [2022-10-16 11:22:13,987 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 191 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:13,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 319 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 298 Invalid, 0 Unknown, 10 Unchecked, 0.2s Time] [2022-10-16 11:22:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-10-16 11:22:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 172. [2022-10-16 11:22:14,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 144 states have (on average 1.1458333333333333) internal successors, (165), 155 states have internal predecessors, (165), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 183 transitions. [2022-10-16 11:22:14,018 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 183 transitions. Word has length 44 [2022-10-16 11:22:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:14,018 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 183 transitions. [2022-10-16 11:22:14,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 183 transitions. [2022-10-16 11:22:14,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 11:22:14,019 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:14,020 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1] [2022-10-16 11:22:14,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:14,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-16 11:22:14,234 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:14,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash 154276321, now seen corresponding path program 3 times [2022-10-16 11:22:14,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:14,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743862049] [2022-10-16 11:22:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:14,250 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744493039] [2022-10-16 11:22:14,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:22:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:14,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:14,252 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:14,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-16 11:22:14,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 11:22:14,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:14,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-16 11:22:14,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:14,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:14,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,475 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:14,479 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:22:14,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-10-16 11:22:14,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 22 [2022-10-16 11:22:14,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-10-16 11:22:14,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:14,733 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2022-10-16 11:22:15,490 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2022-10-16 11:22:15,766 INFO L356 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2022-10-16 11:22:15,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 43 [2022-10-16 11:22:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:15,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:16,047 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse3)) (.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_1143 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1143) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1) 2147483648)) .cse2) (or (forall ((v_ArrVal_1143 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1143) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1) 2147483648)) (not .cse2))))) is different from false [2022-10-16 11:22:16,139 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1143 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1143) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse0 2147483647))))) (not .cse2)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1143 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1143) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse3 2147483647))))) .cse2)))) is different from false [2022-10-16 11:22:22,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743862049] [2022-10-16 11:22:22,591 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:22,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744493039] [2022-10-16 11:22:22,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744493039] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:22,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:22,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-10-16 11:22:22,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213244315] [2022-10-16 11:22:22,592 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:22,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 11:22:22,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:22,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 11:22:22,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=468, Unknown=7, NotChecked=90, Total=650 [2022-10-16 11:22:22,593 INFO L87 Difference]: Start difference. First operand 172 states and 183 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:24,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:24,140 INFO L93 Difference]: Finished difference Result 211 states and 222 transitions. [2022-10-16 11:22:24,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 11:22:24,140 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-10-16 11:22:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:24,142 INFO L225 Difference]: With dead ends: 211 [2022-10-16 11:22:24,142 INFO L226 Difference]: Without dead ends: 210 [2022-10-16 11:22:24,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=128, Invalid=743, Unknown=7, NotChecked=114, Total=992 [2022-10-16 11:22:24,143 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 169 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 964 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:24,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 683 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 964 Invalid, 0 Unknown, 263 Unchecked, 1.2s Time] [2022-10-16 11:22:24,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-10-16 11:22:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 196. [2022-10-16 11:22:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 166 states have (on average 1.1265060240963856) internal successors, (187), 177 states have internal predecessors, (187), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-10-16 11:22:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 207 transitions. [2022-10-16 11:22:24,182 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 207 transitions. Word has length 45 [2022-10-16 11:22:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:24,182 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 207 transitions. [2022-10-16 11:22:24,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 20 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 207 transitions. [2022-10-16 11:22:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-16 11:22:24,183 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:24,183 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:24,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-10-16 11:22:24,397 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:24,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash -355762807, now seen corresponding path program 6 times [2022-10-16 11:22:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:24,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452875836] [2022-10-16 11:22:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:24,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:24,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209063335] [2022-10-16 11:22:24,420 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:22:24,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:24,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:24,421 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:24,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-16 11:22:24,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-10-16 11:22:24,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:24,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 69 conjunts are in the unsatisfiable core [2022-10-16 11:22:24,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:24,634 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:24,646 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:24,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:22:24,713 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:22:24,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:22:24,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:22:24,839 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:22:24,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:22:24,844 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:22:25,021 INFO L356 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-10-16 11:22:25,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 55 [2022-10-16 11:22:25,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-10-16 11:22:25,271 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:22:25,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:22:25,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:22:25,618 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:22:25,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 76 [2022-10-16 11:22:25,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-10-16 11:22:26,918 INFO L356 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2022-10-16 11:22:26,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 25 [2022-10-16 11:22:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:27,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:28,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:28,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452875836] [2022-10-16 11:22:28,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:28,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209063335] [2022-10-16 11:22:28,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209063335] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:28,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:28,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-10-16 11:22:28,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387351386] [2022-10-16 11:22:28,599 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:28,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 11:22:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:28,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 11:22:28,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=911, Unknown=0, NotChecked=0, Total=992 [2022-10-16 11:22:28,600 INFO L87 Difference]: Start difference. First operand 196 states and 207 transitions. Second operand has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:30,319 INFO L93 Difference]: Finished difference Result 228 states and 240 transitions. [2022-10-16 11:22:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 11:22:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-10-16 11:22:30,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:30,322 INFO L225 Difference]: With dead ends: 228 [2022-10-16 11:22:30,322 INFO L226 Difference]: Without dead ends: 227 [2022-10-16 11:22:30,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=135, Invalid=1505, Unknown=0, NotChecked=0, Total=1640 [2022-10-16 11:22:30,324 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 70 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:30,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1328 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 906 Invalid, 0 Unknown, 323 Unchecked, 0.9s Time] [2022-10-16 11:22:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-10-16 11:22:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 212. [2022-10-16 11:22:30,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 180 states have (on average 1.1222222222222222) internal successors, (202), 191 states have internal predecessors, (202), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-16 11:22:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 224 transitions. [2022-10-16 11:22:30,378 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 224 transitions. Word has length 45 [2022-10-16 11:22:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:30,379 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 224 transitions. [2022-10-16 11:22:30,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 26 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 224 transitions. [2022-10-16 11:22:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 11:22:30,380 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:30,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1] [2022-10-16 11:22:30,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:30,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-16 11:22:30,595 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:30,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash 487598758, now seen corresponding path program 3 times [2022-10-16 11:22:30,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:30,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744047759] [2022-10-16 11:22:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:30,627 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:30,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932681157] [2022-10-16 11:22:30,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:22:30,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:30,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:30,641 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:30,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-16 11:22:30,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-10-16 11:22:30,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:30,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 57 conjunts are in the unsatisfiable core [2022-10-16 11:22:30,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:30,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:30,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:30,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:30,949 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:22:31,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:31,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:22:31,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:31,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:31,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:31,265 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 53 [2022-10-16 11:22:32,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2022-10-16 11:22:33,223 INFO L356 Elim1Store]: treesize reduction 49, result has 5.8 percent of original size [2022-10-16 11:22:33,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 80 treesize of output 43 [2022-10-16 11:22:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:33,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:33,509 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse3)) (.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_1317 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) 2147483649 .cse1))) .cse2) (or (forall ((v_ArrVal_1317 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1))) (not .cse2))))) is different from false [2022-10-16 11:22:33,587 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse2 (<= .cse4 2147483647)) (.cse1 (* 4 .cse4))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1317 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= 0 (+ .cse0 2147483648))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) 2147483649 .cse0))))) .cse2) (or (not .cse2) (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1317 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1317) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse3)) (not (<= 0 (+ .cse3 2147483648)))))))))) is different from false [2022-10-16 11:22:37,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:37,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744047759] [2022-10-16 11:22:37,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:37,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932681157] [2022-10-16 11:22:37,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932681157] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:37,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:37,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-10-16 11:22:37,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277301529] [2022-10-16 11:22:37,980 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:37,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-16 11:22:37,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:37,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-16 11:22:37,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=465, Unknown=11, NotChecked=90, Total=650 [2022-10-16 11:22:37,981 INFO L87 Difference]: Start difference. First operand 212 states and 224 transitions. Second operand has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:40,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:40,566 INFO L93 Difference]: Finished difference Result 226 states and 238 transitions. [2022-10-16 11:22:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-16 11:22:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-10-16 11:22:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:40,569 INFO L225 Difference]: With dead ends: 226 [2022-10-16 11:22:40,569 INFO L226 Difference]: Without dead ends: 225 [2022-10-16 11:22:40,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=130, Invalid=795, Unknown=13, NotChecked=118, Total=1056 [2022-10-16 11:22:40,571 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 165 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 853 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:40,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 570 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 853 Invalid, 0 Unknown, 133 Unchecked, 1.3s Time] [2022-10-16 11:22:40,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-10-16 11:22:40,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 188. [2022-10-16 11:22:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 158 states have (on average 1.139240506329114) internal successors, (180), 169 states have internal predecessors, (180), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2022-10-16 11:22:40,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 200 transitions. [2022-10-16 11:22:40,604 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 200 transitions. Word has length 46 [2022-10-16 11:22:40,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:40,604 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 200 transitions. [2022-10-16 11:22:40,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.1) internal successors, (42), 20 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:40,604 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 200 transitions. [2022-10-16 11:22:40,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-16 11:22:40,605 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:40,605 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:40,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-16 11:22:40,810 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1856254950, now seen corresponding path program 6 times [2022-10-16 11:22:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:40,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637256292] [2022-10-16 11:22:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:40,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:40,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:40,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1458128140] [2022-10-16 11:22:40,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-10-16 11:22:40,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:40,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:40,830 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:40,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-16 11:22:41,063 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-10-16 11:22:41,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:41,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 11:22:41,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:41,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:41,088 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:41,093 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:22:41,159 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:22:41,160 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:22:41,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:22:41,292 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:22:41,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:22:41,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:22:41,490 INFO L356 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-10-16 11:22:41,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 55 [2022-10-16 11:22:41,494 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-10-16 11:22:41,786 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:22:41,786 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:22:41,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:22:42,173 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:22:42,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 76 [2022-10-16 11:22:42,185 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-10-16 11:22:45,582 INFO L356 Elim1Store]: treesize reduction 110, result has 2.7 percent of original size [2022-10-16 11:22:45,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 66 treesize of output 25 [2022-10-16 11:22:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 4 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:22:45,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:22:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:46,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637256292] [2022-10-16 11:22:46,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:46,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458128140] [2022-10-16 11:22:46,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458128140] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:22:46,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:22:46,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2022-10-16 11:22:46,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057075572] [2022-10-16 11:22:46,109 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:22:46,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-10-16 11:22:46,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:46,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-10-16 11:22:46,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=852, Unknown=1, NotChecked=0, Total=930 [2022-10-16 11:22:46,112 INFO L87 Difference]: Start difference. First operand 188 states and 200 transitions. Second operand has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:48,179 INFO L93 Difference]: Finished difference Result 212 states and 225 transitions. [2022-10-16 11:22:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-16 11:22:48,181 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 46 [2022-10-16 11:22:48,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:48,182 INFO L225 Difference]: With dead ends: 212 [2022-10-16 11:22:48,183 INFO L226 Difference]: Without dead ends: 211 [2022-10-16 11:22:48,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=135, Invalid=1424, Unknown=1, NotChecked=0, Total=1560 [2022-10-16 11:22:48,185 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 55 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 439 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:48,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1610 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 912 Invalid, 0 Unknown, 439 Unchecked, 1.0s Time] [2022-10-16 11:22:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2022-10-16 11:22:48,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 176. [2022-10-16 11:22:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 148 states have (on average 1.1486486486486487) internal successors, (170), 159 states have internal predecessors, (170), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:48,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 188 transitions. [2022-10-16 11:22:48,229 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 188 transitions. Word has length 46 [2022-10-16 11:22:48,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:48,229 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 188 transitions. [2022-10-16 11:22:48,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 25 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:22:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 188 transitions. [2022-10-16 11:22:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 11:22:48,230 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:48,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:48,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:48,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:48,439 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:48,440 INFO L85 PathProgramCache]: Analyzing trace with hash -888901228, now seen corresponding path program 1 times [2022-10-16 11:22:48,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:48,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258448013] [2022-10-16 11:22:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:48,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:48,454 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:48,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1764264899] [2022-10-16 11:22:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:48,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:48,456 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:48,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-16 11:22:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:22:48,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:22:48,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:22:48,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:22:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258448013] [2022-10-16 11:22:48,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:48,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764264899] [2022-10-16 11:22:48,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764264899] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:22:48,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:22:48,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:22:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996457961] [2022-10-16 11:22:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:22:48,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:22:48,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:48,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:22:48,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:22:48,623 INFO L87 Difference]: Start difference. First operand 176 states and 188 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:22:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:48,673 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2022-10-16 11:22:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:22:48,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2022-10-16 11:22:48,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:48,676 INFO L225 Difference]: With dead ends: 181 [2022-10-16 11:22:48,676 INFO L226 Difference]: Without dead ends: 180 [2022-10-16 11:22:48,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:22:48,677 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 8 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:48,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 152 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:22:48,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-10-16 11:22:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2022-10-16 11:22:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 150 states have (on average 1.1466666666666667) internal successors, (172), 160 states have internal predecessors, (172), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 190 transitions. [2022-10-16 11:22:48,715 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 190 transitions. Word has length 49 [2022-10-16 11:22:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:48,715 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 190 transitions. [2022-10-16 11:22:48,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:22:48,716 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 190 transitions. [2022-10-16 11:22:48,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 11:22:48,717 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:48,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:22:48,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:48,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:48,932 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1786134166, now seen corresponding path program 1 times [2022-10-16 11:22:48,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:48,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125842465] [2022-10-16 11:22:48,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:48,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:48,951 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:48,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373328863] [2022-10-16 11:22:48,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:48,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:48,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:48,953 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:48,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-16 11:22:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:22:49,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:22:49,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:49,105 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 11:22:49,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:22:49,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:22:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125842465] [2022-10-16 11:22:49,106 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:22:49,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373328863] [2022-10-16 11:22:49,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373328863] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:22:49,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:22:49,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:22:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594999010] [2022-10-16 11:22:49,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:22:49,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:22:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:22:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:22:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:22:49,109 INFO L87 Difference]: Start difference. First operand 178 states and 190 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:22:49,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:22:49,159 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2022-10-16 11:22:49,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:22:49,160 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-10-16 11:22:49,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:22:49,162 INFO L225 Difference]: With dead ends: 180 [2022-10-16 11:22:49,162 INFO L226 Difference]: Without dead ends: 179 [2022-10-16 11:22:49,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:22:49,164 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:22:49,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 153 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:22:49,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-10-16 11:22:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-10-16 11:22:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 151 states have (on average 1.1456953642384107) internal successors, (173), 161 states have internal predecessors, (173), 9 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-16 11:22:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 191 transitions. [2022-10-16 11:22:49,202 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 191 transitions. Word has length 50 [2022-10-16 11:22:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:22:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 191 transitions. [2022-10-16 11:22:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:22:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 191 transitions. [2022-10-16 11:22:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 11:22:49,204 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:22:49,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 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, 1, 1, 1] [2022-10-16 11:22:49,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-16 11:22:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-10-16 11:22:49,419 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:22:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:22:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1189142621, now seen corresponding path program 4 times [2022-10-16 11:22:49,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:22:49,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506369046] [2022-10-16 11:22:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:22:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:22:49,438 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:22:49,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098129387] [2022-10-16 11:22:49,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:22:49,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:22:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:22:49,440 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:22:49,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-16 11:22:49,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:22:49,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:22:49,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 72 conjunts are in the unsatisfiable core [2022-10-16 11:22:49,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:22:49,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:22:49,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:49,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:22:49,655 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:22:49,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:49,762 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:22:49,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:49,968 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:22:49,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 57 [2022-10-16 11:22:50,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:22:50,259 INFO L356 Elim1Store]: treesize reduction 92, result has 20.7 percent of original size [2022-10-16 11:22:50,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 82 [2022-10-16 11:23:01,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2022-10-16 11:23:01,337 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-10-16 11:23:01,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 10 [2022-10-16 11:23:01,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:01,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:01,863 INFO L356 Elim1Store]: treesize reduction 112, result has 2.6 percent of original size [2022-10-16 11:23:01,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 46 [2022-10-16 11:23:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:01,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:02,199 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse3)) (.cse2 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse0 (<= .cse3 2147483647))) (and (or (not .cse0) (forall ((v_ArrVal_1568 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse2) 2147483648))) (or (forall ((v_ArrVal_1568 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse2) 2147483648)) .cse0)))) is different from false [2022-10-16 11:23:02,286 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1568 (Array Int Int))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1) 2147483648) (not (<= .cse1 2147483647))))) (not .cse2)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1568 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse3 2147483647))))) .cse2)))) is different from false [2022-10-16 11:23:02,415 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1568 (Array Int Int))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1) 2147483648) (not (<= .cse1 2147483647))))) (not .cse2)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1568 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1568) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse3 2147483647))))) .cse2)))) (<= c_~ARR_SIZE~0 |c_ULTIMATE.start_main_~index~0#1|) (< |c_ULTIMATE.start_main_~index~0#1| 0)) is different from false [2022-10-16 11:23:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506369046] [2022-10-16 11:23:02,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098129387] [2022-10-16 11:23:02,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098129387] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:02,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:02,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-10-16 11:23:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545967552] [2022-10-16 11:23:02,419 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:02,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-10-16 11:23:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-10-16 11:23:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=605, Unknown=9, NotChecked=156, Total=870 [2022-10-16 11:23:02,420 INFO L87 Difference]: Start difference. First operand 179 states and 191 transitions. Second operand has 25 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:09,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:09,622 INFO L93 Difference]: Finished difference Result 298 states and 313 transitions. [2022-10-16 11:23:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-10-16 11:23:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-10-16 11:23:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:09,625 INFO L225 Difference]: With dead ends: 298 [2022-10-16 11:23:09,625 INFO L226 Difference]: Without dead ends: 297 [2022-10-16 11:23:09,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=166, Invalid=1094, Unknown=12, NotChecked=210, Total=1482 [2022-10-16 11:23:09,626 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 129 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 429 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:09,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 692 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 450 Invalid, 0 Unknown, 429 Unchecked, 0.5s Time] [2022-10-16 11:23:09,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-10-16 11:23:09,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 203. [2022-10-16 11:23:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 173 states have (on average 1.1271676300578035) internal successors, (195), 183 states have internal predecessors, (195), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-10-16 11:23:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2022-10-16 11:23:09,669 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 49 [2022-10-16 11:23:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:09,669 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2022-10-16 11:23:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.9565217391304348) internal successors, (45), 24 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:09,670 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2022-10-16 11:23:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-16 11:23:09,670 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:09,670 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:09,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:09,879 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:23:09,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:09,880 INFO L85 PathProgramCache]: Analyzing trace with hash 679103493, now seen corresponding path program 7 times [2022-10-16 11:23:09,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:09,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82679558] [2022-10-16 11:23:09,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:09,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:09,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:09,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879927337] [2022-10-16 11:23:09,899 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 11:23:09,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:09,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:09,900 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:09,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-16 11:23:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:10,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 71 conjunts are in the unsatisfiable core [2022-10-16 11:23:10,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:10,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:10,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:10,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:23:10,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:23:10,139 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:23:10,279 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:23:10,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:23:10,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:23:10,500 INFO L356 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-10-16 11:23:10,501 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 55 [2022-10-16 11:23:10,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-10-16 11:23:10,805 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:23:10,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:23:10,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:23:11,173 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:23:11,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 76 [2022-10-16 11:23:11,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-10-16 11:23:11,734 INFO L356 Elim1Store]: treesize reduction 130, result has 29.0 percent of original size [2022-10-16 11:23:11,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 88 [2022-10-16 11:23:11,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2022-10-16 11:23:14,026 INFO L356 Elim1Store]: treesize reduction 130, result has 2.3 percent of original size [2022-10-16 11:23:14,026 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 75 treesize of output 28 [2022-10-16 11:23:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 4 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:14,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:16,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:16,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82679558] [2022-10-16 11:23:16,180 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:16,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879927337] [2022-10-16 11:23:16,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879927337] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:16,181 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:16,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2022-10-16 11:23:16,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708712073] [2022-10-16 11:23:16,181 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:16,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-10-16 11:23:16,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-10-16 11:23:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1102, Unknown=0, NotChecked=0, Total=1190 [2022-10-16 11:23:16,183 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand has 31 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:19,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:19,241 INFO L93 Difference]: Finished difference Result 244 states and 258 transitions. [2022-10-16 11:23:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 11:23:19,245 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2022-10-16 11:23:19,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:19,247 INFO L225 Difference]: With dead ends: 244 [2022-10-16 11:23:19,247 INFO L226 Difference]: Without dead ends: 243 [2022-10-16 11:23:19,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2022-10-16 11:23:19,256 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 81 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 517 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:19,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1641 Invalid, 1641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1119 Invalid, 0 Unknown, 517 Unchecked, 1.7s Time] [2022-10-16 11:23:19,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-10-16 11:23:19,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 219. [2022-10-16 11:23:19,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 187 states have (on average 1.1229946524064172) internal successors, (210), 197 states have internal predecessors, (210), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-16 11:23:19,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 232 transitions. [2022-10-16 11:23:19,308 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 232 transitions. Word has length 49 [2022-10-16 11:23:19,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:19,309 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 232 transitions. [2022-10-16 11:23:19,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.5) internal successors, (45), 29 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:19,309 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 232 transitions. [2022-10-16 11:23:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-16 11:23:19,310 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:19,311 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-10-16 11:23:19,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:19,525 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:23:19,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -893847327, now seen corresponding path program 1 times [2022-10-16 11:23:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:19,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427267236] [2022-10-16 11:23:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:19,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:19,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [455658225] [2022-10-16 11:23:19,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:19,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:19,546 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:19,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-10-16 11:23:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:19,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:23:19,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:19,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:19,938 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 11:23:20,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:23:20,488 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:23:20,489 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-10-16 11:23:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:20,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:20,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427267236] [2022-10-16 11:23:20,691 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:20,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455658225] [2022-10-16 11:23:20,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455658225] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:20,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:20,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-10-16 11:23:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967574038] [2022-10-16 11:23:20,693 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:23:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:23:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2022-10-16 11:23:20,694 INFO L87 Difference]: Start difference. First operand 219 states and 232 transitions. Second operand has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:21,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:21,017 INFO L93 Difference]: Finished difference Result 249 states and 263 transitions. [2022-10-16 11:23:21,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 11:23:21,018 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2022-10-16 11:23:21,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:21,019 INFO L225 Difference]: With dead ends: 249 [2022-10-16 11:23:21,019 INFO L226 Difference]: Without dead ends: 248 [2022-10-16 11:23:21,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2022-10-16 11:23:21,020 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 28 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:21,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 425 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 139 Unchecked, 0.1s Time] [2022-10-16 11:23:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-10-16 11:23:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2022-10-16 11:23:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 210 states have (on average 1.1142857142857143) internal successors, (234), 220 states have internal predecessors, (234), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-16 11:23:21,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 258 transitions. [2022-10-16 11:23:21,068 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 258 transitions. Word has length 51 [2022-10-16 11:23:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:21,069 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 258 transitions. [2022-10-16 11:23:21,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 15 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:23:21,069 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 258 transitions. [2022-10-16 11:23:21,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 11:23:21,070 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:21,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 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, 1, 1, 1, 1] [2022-10-16 11:23:21,099 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-10-16 11:23:21,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-10-16 11:23:21,283 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:23:21,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:21,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1791284310, now seen corresponding path program 4 times [2022-10-16 11:23:21,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:21,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989144075] [2022-10-16 11:23:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:21,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:21,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:21,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [969579009] [2022-10-16 11:23:21,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-16 11:23:21,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:21,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:21,301 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:21,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-10-16 11:23:21,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-16 11:23:21,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:23:21,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 67 conjunts are in the unsatisfiable core [2022-10-16 11:23:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:21,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:21,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:21,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:21,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:23:21,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-10-16 11:23:21,819 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:23:21,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 57 [2022-10-16 11:23:22,239 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:23:22,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 81 [2022-10-16 11:23:24,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2022-10-16 11:23:24,866 INFO L356 Elim1Store]: treesize reduction 66, result has 4.3 percent of original size [2022-10-16 11:23:24,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 96 treesize of output 46 [2022-10-16 11:23:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:24,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:25,261 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse0 (* 4 .cse3)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_1807 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1807) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1))) (not .cse2)) (or (forall ((v_ArrVal_1807 (Array Int Int))) (< 0 (+ 2147483649 .cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1807) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) .cse2)))) is different from false [2022-10-16 11:23:25,411 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse0 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1807 (Array Int Int))) (let ((.cse1 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1807) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse1)) (not (<= 0 (+ .cse1 2147483648)))))) (not .cse2)) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_1807 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= 0 (+ .cse3 2147483648))) (< 0 (+ 2147483649 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1807) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))))) .cse2)))) is different from false [2022-10-16 11:23:38,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:38,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989144075] [2022-10-16 11:23:38,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:38,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969579009] [2022-10-16 11:23:38,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969579009] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:38,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:38,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2022-10-16 11:23:38,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876415977] [2022-10-16 11:23:38,045 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-16 11:23:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:38,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-16 11:23:38,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=602, Unknown=14, NotChecked=102, Total=812 [2022-10-16 11:23:38,046 INFO L87 Difference]: Start difference. First operand 244 states and 258 transitions. Second operand has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:41,849 INFO L93 Difference]: Finished difference Result 320 states and 337 transitions. [2022-10-16 11:23:41,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-16 11:23:41,851 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-10-16 11:23:41,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:41,854 INFO L225 Difference]: With dead ends: 320 [2022-10-16 11:23:41,854 INFO L226 Difference]: Without dead ends: 319 [2022-10-16 11:23:41,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=125, Invalid=861, Unknown=14, NotChecked=122, Total=1122 [2022-10-16 11:23:41,855 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 145 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 618 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:41,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 837 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 696 Invalid, 0 Unknown, 618 Unchecked, 1.2s Time] [2022-10-16 11:23:41,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-10-16 11:23:41,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 220. [2022-10-16 11:23:41,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 188 states have (on average 1.127659574468085) internal successors, (212), 198 states have internal predecessors, (212), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-10-16 11:23:41,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 234 transitions. [2022-10-16 11:23:41,899 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 234 transitions. Word has length 50 [2022-10-16 11:23:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:41,899 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 234 transitions. [2022-10-16 11:23:41,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 234 transitions. [2022-10-16 11:23:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-16 11:23:41,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:41,901 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:41,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-16 11:23:42,115 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:23:42,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash -422628118, now seen corresponding path program 7 times [2022-10-16 11:23:42,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:42,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31177100] [2022-10-16 11:23:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:42,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:42,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867338049] [2022-10-16 11:23:42,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-16 11:23:42,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:42,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:42,142 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:42,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-10-16 11:23:42,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:42,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 79 conjunts are in the unsatisfiable core [2022-10-16 11:23:42,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:42,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:42,331 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:42,334 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:23:42,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-10-16 11:23:42,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-10-16 11:23:42,568 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:23:42,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:23:42,573 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:23:42,881 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:23:42,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 52 [2022-10-16 11:23:42,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2022-10-16 11:23:43,389 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:23:43,390 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:23:43,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:23:44,137 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:23:44,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 76 [2022-10-16 11:23:44,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 53 [2022-10-16 11:23:45,229 INFO L356 Elim1Store]: treesize reduction 158, result has 21.8 percent of original size [2022-10-16 11:23:45,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 74 treesize of output 91 [2022-10-16 11:23:45,234 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2022-10-16 11:23:48,211 INFO L356 Elim1Store]: treesize reduction 174, result has 1.7 percent of original size [2022-10-16 11:23:48,212 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 78 treesize of output 28 [2022-10-16 11:23:48,357 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 4 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:48,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:49,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:49,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31177100] [2022-10-16 11:23:49,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:49,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867338049] [2022-10-16 11:23:49,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867338049] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:49,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:49,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2022-10-16 11:23:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168053355] [2022-10-16 11:23:49,190 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:49,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-10-16 11:23:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-10-16 11:23:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1033, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 11:23:49,191 INFO L87 Difference]: Start difference. First operand 220 states and 234 transitions. Second operand has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:53,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:53,954 INFO L93 Difference]: Finished difference Result 242 states and 259 transitions. [2022-10-16 11:23:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-16 11:23:53,956 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-10-16 11:23:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:53,958 INFO L225 Difference]: With dead ends: 242 [2022-10-16 11:23:53,958 INFO L226 Difference]: Without dead ends: 241 [2022-10-16 11:23:53,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=198, Invalid=2058, Unknown=0, NotChecked=0, Total=2256 [2022-10-16 11:23:53,960 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 75 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 928 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:53,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1455 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 928 Invalid, 0 Unknown, 321 Unchecked, 1.4s Time] [2022-10-16 11:23:53,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-10-16 11:23:53,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 208. [2022-10-16 11:23:53,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 178 states have (on average 1.1348314606741574) internal successors, (202), 188 states have internal predecessors, (202), 10 states have call successors, (10), 9 states have call predecessors, (10), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-10-16 11:23:53,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2022-10-16 11:23:53,994 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 50 [2022-10-16 11:23:53,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:53,995 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2022-10-16 11:23:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5862068965517242) internal successors, (46), 28 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:23:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2022-10-16 11:23:53,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 11:23:53,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:53,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:54,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:54,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-16 11:23:54,205 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:23:54,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:54,206 INFO L85 PathProgramCache]: Analyzing trace with hash -372945791, now seen corresponding path program 1 times [2022-10-16 11:23:54,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:54,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603542965] [2022-10-16 11:23:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:54,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:54,219 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:54,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1457471008] [2022-10-16 11:23:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:54,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:54,220 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:23:54,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-10-16 11:23:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:54,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 40 conjunts are in the unsatisfiable core [2022-10-16 11:23:54,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:54,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:23:54,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:54,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:23:54,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:23:54,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:23:55,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 104 [2022-10-16 11:23:55,056 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:55,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:55,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 103 treesize of output 150 [2022-10-16 11:23:55,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:55,562 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:55,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 12 [2022-10-16 11:23:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:23:55,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:04,128 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1966 (Array Int Int))) (<= (let ((.cse0 (select (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1966) |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse2 (+ (* 4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296)) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (store .cse1 .cse2 (+ (select .cse1 .cse2) (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)))) |c_ULTIMATE.start_main_~#array2~0#1.offset|))) (* .cse0 .cse0)) 9223372036854775807)) is different from false [2022-10-16 11:24:06,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603542965] [2022-10-16 11:24:06,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457471008] [2022-10-16 11:24:06,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457471008] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:06,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:06,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-10-16 11:24:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228150913] [2022-10-16 11:24:06,199 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 11:24:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:06,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 11:24:06,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=599, Unknown=2, NotChecked=50, Total=756 [2022-10-16 11:24:06,203 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:24:08,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:08,639 INFO L93 Difference]: Finished difference Result 233 states and 247 transitions. [2022-10-16 11:24:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 11:24:08,640 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 53 [2022-10-16 11:24:08,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:08,641 INFO L225 Difference]: With dead ends: 233 [2022-10-16 11:24:08,641 INFO L226 Difference]: Without dead ends: 232 [2022-10-16 11:24:08,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=122, Invalid=691, Unknown=3, NotChecked=54, Total=870 [2022-10-16 11:24:08,642 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 86 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:08,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 386 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 183 Invalid, 0 Unknown, 159 Unchecked, 0.2s Time] [2022-10-16 11:24:08,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-10-16 11:24:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2022-10-16 11:24:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 191 states have (on average 1.12565445026178) internal successors, (215), 202 states have internal predecessors, (215), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-16 11:24:08,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 239 transitions. [2022-10-16 11:24:08,689 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 239 transitions. Word has length 53 [2022-10-16 11:24:08,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:08,690 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 239 transitions. [2022-10-16 11:24:08,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:24:08,690 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 239 transitions. [2022-10-16 11:24:08,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-16 11:24:08,691 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:08,691 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-10-16 11:24:08,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-10-16 11:24:08,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:08,905 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:24:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1939463282, now seen corresponding path program 1 times [2022-10-16 11:24:08,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:08,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135232803] [2022-10-16 11:24:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:08,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:08,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:08,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1435745670] [2022-10-16 11:24:08,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:08,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:08,919 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:08,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-10-16 11:24:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:24:09,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-16 11:24:09,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:09,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:24:09,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:24:09,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:24:09,450 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-10-16 11:24:09,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2022-10-16 11:24:09,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-10-16 11:24:10,162 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-10-16 11:24:10,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-10-16 11:24:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:24:10,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:10,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135232803] [2022-10-16 11:24:10,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:10,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435745670] [2022-10-16 11:24:10,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435745670] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:10,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:10,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 11:24:10,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116166311] [2022-10-16 11:24:10,390 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:10,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:24:10,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:24:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:24:10,393 INFO L87 Difference]: Start difference. First operand 225 states and 239 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:24:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:10,695 INFO L93 Difference]: Finished difference Result 227 states and 241 transitions. [2022-10-16 11:24:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-16 11:24:10,699 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2022-10-16 11:24:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:10,700 INFO L225 Difference]: With dead ends: 227 [2022-10-16 11:24:10,700 INFO L226 Difference]: Without dead ends: 226 [2022-10-16 11:24:10,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-10-16 11:24:10,701 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 16 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 133 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 416 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 133 Unchecked, 0.0s Time] [2022-10-16 11:24:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-10-16 11:24:10,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2022-10-16 11:24:10,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 192 states have (on average 1.125) internal successors, (216), 203 states have internal predecessors, (216), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-16 11:24:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 240 transitions. [2022-10-16 11:24:10,736 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 240 transitions. Word has length 52 [2022-10-16 11:24:10,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:10,737 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 240 transitions. [2022-10-16 11:24:10,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-16 11:24:10,737 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 240 transitions. [2022-10-16 11:24:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 11:24:10,737 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:10,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 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, 1, 1, 1] [2022-10-16 11:24:10,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-10-16 11:24:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-16 11:24:10,939 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:24:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:10,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1531711705, now seen corresponding path program 5 times [2022-10-16 11:24:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:10,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358619182] [2022-10-16 11:24:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:10,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:10,955 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:10,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [93933910] [2022-10-16 11:24:10,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-10-16 11:24:10,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:10,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:10,957 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:10,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-10-16 11:24:11,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-10-16 11:24:11,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:24:11,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 76 conjunts are in the unsatisfiable core [2022-10-16 11:24:11,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:11,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-10-16 11:24:11,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:24:11,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:24:11,291 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-10-16 11:24:11,356 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:24:11,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2022-10-16 11:24:11,574 INFO L356 Elim1Store]: treesize reduction 64, result has 28.9 percent of original size [2022-10-16 11:24:11,575 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 57 [2022-10-16 11:24:12,002 INFO L356 Elim1Store]: treesize reduction 108, result has 28.9 percent of original size [2022-10-16 11:24:12,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 81 [2022-10-16 11:24:12,803 INFO L356 Elim1Store]: treesize reduction 152, result has 29.0 percent of original size [2022-10-16 11:24:12,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 16 case distinctions, treesize of input 101 treesize of output 105 [2022-10-16 11:24:16,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 72 [2022-10-16 11:24:17,604 INFO L356 Elim1Store]: treesize reduction 83, result has 3.5 percent of original size [2022-10-16 11:24:17,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 49 [2022-10-16 11:24:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:24:17,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:18,187 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse3)) (.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse2 (<= .cse3 2147483647))) (and (or (forall ((v_ArrVal_2110 (Array Int Int))) (< (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_2110) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648)) (not .cse2)) (or (forall ((v_ArrVal_2110 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_2110) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) .cse0) 2147483648)) .cse2)))) is different from false [2022-10-16 11:24:18,375 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_~ARR_SIZE~0 4294967295 (* 4294967295 |c_ULTIMATE.start_main_~index~0#1|)) 4294967296))) (let ((.cse1 (* 4 .cse4)) (.cse2 (<= .cse4 2147483647))) (and (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_2110 (Array Int Int))) (let ((.cse0 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_2110) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ (- 17179869184) .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse0 2147483647))))) .cse2) (or (forall ((|ULTIMATE.start_main_~num~0#1| Int) (v_ArrVal_2110 (Array Int Int))) (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (< (+ .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_2110) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 2147483648) (not (<= .cse3 2147483647))))) (not .cse2))))) is different from false [2022-10-16 11:24:26,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:26,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358619182] [2022-10-16 11:24:26,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:26,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93933910] [2022-10-16 11:24:26,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93933910] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:26,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:26,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-10-16 11:24:26,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571367474] [2022-10-16 11:24:26,947 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:26,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-16 11:24:26,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-16 11:24:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=735, Unknown=6, NotChecked=110, Total=930 [2022-10-16 11:24:26,948 INFO L87 Difference]: Start difference. First operand 226 states and 240 transitions. Second operand has 26 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:31,890 INFO L93 Difference]: Finished difference Result 271 states and 287 transitions. [2022-10-16 11:24:31,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 11:24:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-10-16 11:24:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:31,894 INFO L225 Difference]: With dead ends: 271 [2022-10-16 11:24:31,894 INFO L226 Difference]: Without dead ends: 270 [2022-10-16 11:24:31,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=115, Invalid=1147, Unknown=6, NotChecked=138, Total=1406 [2022-10-16 11:24:31,895 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 65 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 306 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:31,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1390 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 865 Invalid, 0 Unknown, 306 Unchecked, 1.3s Time] [2022-10-16 11:24:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-10-16 11:24:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2022-10-16 11:24:31,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 214 states have (on average 1.1121495327102804) internal successors, (238), 225 states have internal predecessors, (238), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2022-10-16 11:24:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 264 transitions. [2022-10-16 11:24:31,959 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 264 transitions. Word has length 53 [2022-10-16 11:24:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:31,959 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 264 transitions. [2022-10-16 11:24:31,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.96) internal successors, (49), 25 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:31,959 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 264 transitions. [2022-10-16 11:24:31,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-16 11:24:31,960 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:31,960 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:24:32,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-10-16 11:24:32,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-10-16 11:24:32,173 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:24:32,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:32,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1021672577, now seen corresponding path program 8 times [2022-10-16 11:24:32,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:32,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709357194] [2022-10-16 11:24:32,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:32,197 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:32,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1963503366] [2022-10-16 11:24:32,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:24:32,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:32,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:32,199 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:32,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-10-16 11:24:32,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:24:32,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:24:32,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 87 conjunts are in the unsatisfiable core [2022-10-16 11:24:32,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:32,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:24:32,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:24:32,408 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:24:32,476 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:24:32,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:24:32,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:24:32,666 INFO L356 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2022-10-16 11:24:32,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 40 [2022-10-16 11:24:32,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2022-10-16 11:24:32,954 INFO L356 Elim1Store]: treesize reduction 62, result has 21.5 percent of original size [2022-10-16 11:24:32,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 55 [2022-10-16 11:24:32,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 42 [2022-10-16 11:24:33,502 INFO L356 Elim1Store]: treesize reduction 86, result has 28.9 percent of original size [2022-10-16 11:24:33,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 53 treesize of output 64 [2022-10-16 11:24:33,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2022-10-16 11:24:34,207 INFO L356 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-10-16 11:24:34,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 65 treesize of output 79 [2022-10-16 11:24:34,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 56 [2022-10-16 11:24:35,245 INFO L356 Elim1Store]: treesize reduction 130, result has 29.0 percent of original size [2022-10-16 11:24:35,246 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 71 treesize of output 88 [2022-10-16 11:24:35,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 60 [2022-10-16 11:24:36,670 INFO L356 Elim1Store]: treesize reduction 152, result has 29.0 percent of original size [2022-10-16 11:24:36,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 80 treesize of output 100 [2022-10-16 11:24:36,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2022-10-16 11:24:40,542 INFO L356 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2022-10-16 11:24:40,542 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 82 treesize of output 31 [2022-10-16 11:24:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:24:40,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:44,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709357194] [2022-10-16 11:24:44,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963503366] [2022-10-16 11:24:44,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963503366] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:44,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:44,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2022-10-16 11:24:44,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029699032] [2022-10-16 11:24:44,084 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:44,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 11:24:44,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:44,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 11:24:44,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2022-10-16 11:24:44,086 INFO L87 Difference]: Start difference. First operand 250 states and 264 transitions. Second operand has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:52,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:52,249 INFO L93 Difference]: Finished difference Result 299 states and 317 transitions. [2022-10-16 11:24:52,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-10-16 11:24:52,252 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2022-10-16 11:24:52,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:52,253 INFO L225 Difference]: With dead ends: 299 [2022-10-16 11:24:52,254 INFO L226 Difference]: Without dead ends: 298 [2022-10-16 11:24:52,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=158, Invalid=2292, Unknown=0, NotChecked=0, Total=2450 [2022-10-16 11:24:52,255 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 98 mSDsluCounter, 2408 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:52,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2520 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2317 Invalid, 0 Unknown, 189 Unchecked, 4.6s Time] [2022-10-16 11:24:52,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-16 11:24:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 266. [2022-10-16 11:24:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 228 states have (on average 1.1096491228070176) internal successors, (253), 239 states have internal predecessors, (253), 14 states have call successors, (14), 13 states have call predecessors, (14), 13 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2022-10-16 11:24:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 281 transitions. [2022-10-16 11:24:52,301 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 281 transitions. Word has length 53 [2022-10-16 11:24:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:52,301 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 281 transitions. [2022-10-16 11:24:52,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.4848484848484849) internal successors, (49), 32 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:24:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 281 transitions. [2022-10-16 11:24:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 11:24:52,302 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:52,302 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:24:52,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-10-16 11:24:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:52,503 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [squareErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, squareErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2022-10-16 11:24:52,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1897527901, now seen corresponding path program 2 times [2022-10-16 11:24:52,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:52,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35386872] [2022-10-16 11:24:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:52,515 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:52,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732865879] [2022-10-16 11:24:52,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:24:52,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:52,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:52,517 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 11:24:52,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-10-16 11:24:52,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:24:52,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:24:52,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 51 conjunts are in the unsatisfiable core [2022-10-16 11:24:52,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:52,756 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-10-16 11:24:52,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-10-16 11:24:52,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-10-16 11:24:52,869 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:24:52,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2022-10-16 11:24:52,873 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-10-16 11:24:56,006 INFO L356 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-10-16 11:24:56,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 47 treesize of output 52 [2022-10-16 11:24:57,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2022-10-16 11:25:08,267 INFO L356 Elim1Store]: treesize reduction 110, result has 80.7 percent of original size [2022-10-16 11:25:08,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 146 treesize of output 534