/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/array9_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:23:10,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:23:10,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:23:10,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:23:10,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:23:10,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:23:10,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:23:10,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:23:10,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:23:10,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:23:10,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:23:10,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:23:10,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:23:10,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:23:10,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:23:11,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:23:11,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:23:11,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:23:11,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:23:11,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:23:11,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:23:11,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:23:11,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:23:11,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:23:11,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:23:11,036 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:23:11,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:23:11,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:23:11,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:23:11,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:23:11,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:23:11,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:23:11,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:23:11,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:23:11,046 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:23:11,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:23:11,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:23:11,048 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:23:11,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:23:11,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:23:11,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:23:11,051 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 11:23:11,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:23:11,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:23:11,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:23:11,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:23:11,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:23:11,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:23:11,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:23:11,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:23:11,113 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:23:11,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:23:11,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:23:11,115 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:23:11,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:23:11,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:23:11,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:23:11,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:23:11,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:23:11,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:23:11,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:23:11,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:23:11,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:23:11,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:23:11,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:23:11,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:23:11,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:23:11,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:23:11,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:23:11,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:23:11,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:23:11,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:23:11,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:23:11,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:23:11,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:23:11,547 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:23:11,549 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array9_pattern.c [2022-10-16 11:23:11,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abe865b/5d7b7e3fa1f24db3ab3372a5cfe1dc92/FLAGfcd50c679 [2022-10-16 11:23:12,209 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:23:12,210 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array9_pattern.c [2022-10-16 11:23:12,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abe865b/5d7b7e3fa1f24db3ab3372a5cfe1dc92/FLAGfcd50c679 [2022-10-16 11:23:12,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abe865b/5d7b7e3fa1f24db3ab3372a5cfe1dc92 [2022-10-16 11:23:12,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:23:12,593 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:23:12,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:23:12,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:23:12,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:23:12,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244ce91c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12, skipping insertion in model container [2022-10-16 11:23:12,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:23:12,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:23:12,807 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/array9_pattern.c[1352,1365] [2022-10-16 11:23:12,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:23:12,841 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:23:12,856 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/array9_pattern.c[1352,1365] [2022-10-16 11:23:12,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:23:12,885 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:23:12,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12 WrapperNode [2022-10-16 11:23:12,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:23:12,887 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:23:12,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:23:12,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:23:12,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,933 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 101 [2022-10-16 11:23:12,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:23:12,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:23:12,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:23:12,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:23:12,946 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:23:12,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:23:12,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:23:12,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:23:12,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (1/1) ... [2022-10-16 11:23:12,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:23:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:13,063 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 11:23:13,092 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 11:23:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:23:13,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 11:23:13,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 11:23:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:23:13,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:23:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:23:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:23:13,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:23:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:23:13,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:23:13,240 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:23:13,242 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:23:13,514 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:23:13,539 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:23:13,539 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 11:23:13,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:13 BoogieIcfgContainer [2022-10-16 11:23:13,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:23:13,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:23:13,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:23:13,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:23:13,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:23:12" (1/3) ... [2022-10-16 11:23:13,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8dad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:13, skipping insertion in model container [2022-10-16 11:23:13,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:23:12" (2/3) ... [2022-10-16 11:23:13,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28c8dad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:23:13, skipping insertion in model container [2022-10-16 11:23:13,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:23:13" (3/3) ... [2022-10-16 11:23:13,579 INFO L112 eAbstractionObserver]: Analyzing ICFG array9_pattern.c [2022-10-16 11:23:13,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:23:13,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-16 11:23:13,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:23:13,705 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;@43dc6e82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:23:13,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-10-16 11:23:13,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 57 states have internal predecessors, (67), 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 11:23:13,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:23:13,722 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:13,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:13,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:13,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:13,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1194062461, now seen corresponding path program 1 times [2022-10-16 11:23:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:13,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879437816] [2022-10-16 11:23:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,034 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 11:23:14,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:14,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879437816] [2022-10-16 11:23:14,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879437816] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:14,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:14,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:23:14,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693413006] [2022-10-16 11:23:14,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:14,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:23:14,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:14,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:23:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:23:14,100 INFO L87 Difference]: Start difference. First operand has 61 states, 39 states have (on average 1.7179487179487178) internal successors, (67), 57 states have internal predecessors, (67), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 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 11:23:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:14,149 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2022-10-16 11:23:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:23:14,154 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 11:23:14,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:14,172 INFO L225 Difference]: With dead ends: 119 [2022-10-16 11:23:14,172 INFO L226 Difference]: Without dead ends: 55 [2022-10-16 11:23:14,177 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 11:23:14,184 INFO L413 NwaCegarLoop]: 65 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, 65 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 11:23:14,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-10-16 11:23:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-10-16 11:23:14,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 51 states have internal predecessors, (55), 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 11:23:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2022-10-16 11:23:14,269 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 11 [2022-10-16 11:23:14,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:14,271 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2022-10-16 11:23:14,272 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 11:23:14,272 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2022-10-16 11:23:14,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 11:23:14,275 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:14,275 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 11:23:14,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:14,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1325897473, now seen corresponding path program 1 times [2022-10-16 11:23:14,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:14,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614455342] [2022-10-16 11:23:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:14,568 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 11:23:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:14,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614455342] [2022-10-16 11:23:14,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614455342] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:14,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:14,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:14,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309324928] [2022-10-16 11:23:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:14,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:14,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:14,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:14,574 INFO L87 Difference]: Start difference. First operand 55 states and 59 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 11:23:14,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:14,724 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2022-10-16 11:23:14,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:14,725 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 11:23:14,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:14,727 INFO L225 Difference]: With dead ends: 84 [2022-10-16 11:23:14,727 INFO L226 Difference]: Without dead ends: 82 [2022-10-16 11:23:14,727 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 11:23:14,732 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 25 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:14,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 131 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:14,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-10-16 11:23:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2022-10-16 11:23:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.5789473684210527) internal successors, (60), 55 states have internal predecessors, (60), 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 11:23:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2022-10-16 11:23:14,757 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 11 [2022-10-16 11:23:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:14,761 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2022-10-16 11:23:14,762 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 11:23:14,763 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2022-10-16 11:23:14,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-16 11:23:14,767 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:14,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:14,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 11:23:14,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:14,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:14,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1017398907, now seen corresponding path program 1 times [2022-10-16 11:23:14,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:14,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818145655] [2022-10-16 11:23:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,046 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 11:23:15,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:15,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818145655] [2022-10-16 11:23:15,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818145655] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:15,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941486554] [2022-10-16 11:23:15,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:15,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:15,054 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 11:23:15,061 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 11:23:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:23:15,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:15,220 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 11:23:15,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:15,280 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 11:23:15,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941486554] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:23:15,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:23:15,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-10-16 11:23:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647475838] [2022-10-16 11:23:15,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:23:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:23:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:23:15,284 INFO L87 Difference]: Start difference. First operand 59 states and 64 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 11:23:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:15,539 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2022-10-16 11:23:15,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:15,540 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 11:23:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:15,542 INFO L225 Difference]: With dead ends: 101 [2022-10-16 11:23:15,543 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:23:15,544 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 11:23:15,546 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 80 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:15,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 195 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:23:15,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:23:15,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 70. [2022-10-16 11:23:15,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 66 states have internal predecessors, (76), 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 11:23:15,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2022-10-16 11:23:15,559 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 15 [2022-10-16 11:23:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:15,559 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2022-10-16 11:23:15,560 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 11:23:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2022-10-16 11:23:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:23:15,561 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:15,561 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:15,599 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 11:23:15,775 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 11:23:15,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2126530071, now seen corresponding path program 1 times [2022-10-16 11:23:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066161740] [2022-10-16 11:23:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:15,798 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:15,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1123149910] [2022-10-16 11:23:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:15,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:15,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:15,800 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 11:23:15,824 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 11:23:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:15,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:23:15,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:15,910 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 11:23:15,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:15,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066161740] [2022-10-16 11:23:15,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123149910] [2022-10-16 11:23:15,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123149910] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:15,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:15,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:23:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984561196] [2022-10-16 11:23:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:23:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:23:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:23:15,914 INFO L87 Difference]: Start difference. First operand 70 states and 80 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 11:23:16,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:16,017 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2022-10-16 11:23:16,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:23:16,017 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 11:23:16,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:16,019 INFO L225 Difference]: With dead ends: 132 [2022-10-16 11:23:16,019 INFO L226 Difference]: Without dead ends: 86 [2022-10-16 11:23:16,020 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 11:23:16,021 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 71 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:16,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 160 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:16,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-10-16 11:23:16,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 73. [2022-10-16 11:23:16,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.4807692307692308) internal successors, (77), 68 states have internal predecessors, (77), 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 11:23:16,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-10-16 11:23:16,032 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 17 [2022-10-16 11:23:16,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:16,033 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-10-16 11:23:16,033 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 11:23:16,033 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-10-16 11:23:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:23:16,034 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:16,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:16,071 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 11:23:16,247 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 11:23:16,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:16,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1474595093, now seen corresponding path program 1 times [2022-10-16 11:23:16,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:16,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811855609] [2022-10-16 11:23:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:16,409 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 11:23:16,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:16,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811855609] [2022-10-16 11:23:16,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811855609] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:16,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964481204] [2022-10-16 11:23:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:16,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:16,412 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 11:23:16,433 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 11:23:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:16,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:23:16,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:16,512 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 11:23:16,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:16,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964481204] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:16,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:16,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-10-16 11:23:16,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891876421] [2022-10-16 11:23:16,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:16,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:23:16,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:23:16,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:23:16,516 INFO L87 Difference]: Start difference. First operand 73 states and 81 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 11:23:16,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:16,600 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2022-10-16 11:23:16,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:23:16,601 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 11:23:16,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:16,602 INFO L225 Difference]: With dead ends: 86 [2022-10-16 11:23:16,602 INFO L226 Difference]: Without dead ends: 84 [2022-10-16 11:23:16,603 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 11:23:16,604 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 56 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:16,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 135 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:16,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-16 11:23:16,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2022-10-16 11:23:16,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 66 states have internal predecessors, (73), 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 11:23:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-10-16 11:23:16,613 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 16 [2022-10-16 11:23:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:16,614 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-10-16 11:23:16,614 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 11:23:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-10-16 11:23:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:23:16,615 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:16,615 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 11:23:16,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:16,829 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 11:23:16,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:16,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:16,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1051293083, now seen corresponding path program 1 times [2022-10-16 11:23:16,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:16,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447004837] [2022-10-16 11:23:16,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:16,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:16,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464422219] [2022-10-16 11:23:16,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:16,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:16,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:16,848 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 11:23:16,855 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 11:23:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:16,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:16,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:16,992 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 11:23:16,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:16,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:16,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447004837] [2022-10-16 11:23:16,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:16,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464422219] [2022-10-16 11:23:16,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464422219] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:16,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:16,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:16,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940379221] [2022-10-16 11:23:16,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:16,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:16,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:16,997 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 11:23:17,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:17,042 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2022-10-16 11:23:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:17,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 21 [2022-10-16 11:23:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:17,044 INFO L225 Difference]: With dead ends: 71 [2022-10-16 11:23:17,045 INFO L226 Difference]: Without dead ends: 69 [2022-10-16 11:23:17,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 11:23:17,051 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 52 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:17,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 68 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-10-16 11:23:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-10-16 11:23:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 64 states have internal predecessors, (71), 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 11:23:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2022-10-16 11:23:17,077 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 21 [2022-10-16 11:23:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:17,078 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2022-10-16 11:23:17,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 11:23:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2022-10-16 11:23:17,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-16 11:23:17,079 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:17,080 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 11:23:17,116 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 11:23:17,280 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 11:23:17,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1769652861, now seen corresponding path program 1 times [2022-10-16 11:23:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:17,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826444998] [2022-10-16 11:23:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:17,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:17,297 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:17,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1393519927] [2022-10-16 11:23:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:17,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:17,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:17,299 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 11:23:17,320 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 11:23:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:17,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:17,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:17,400 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 11:23:17,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:17,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826444998] [2022-10-16 11:23:17,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:17,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393519927] [2022-10-16 11:23:17,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393519927] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:17,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:17,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:17,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753668307] [2022-10-16 11:23:17,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:17,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:17,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:17,407 INFO L87 Difference]: Start difference. First operand 69 states and 75 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 11:23:17,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:17,442 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-10-16 11:23:17,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:17,442 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 11:23:17,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:17,443 INFO L225 Difference]: With dead ends: 69 [2022-10-16 11:23:17,443 INFO L226 Difference]: Without dead ends: 67 [2022-10-16 11:23:17,444 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 11:23:17,445 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 47 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:17,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 68 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:17,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-10-16 11:23:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-10-16 11:23:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 62 states have internal predecessors, (69), 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 11:23:17,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2022-10-16 11:23:17,452 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 22 [2022-10-16 11:23:17,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:17,453 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2022-10-16 11:23:17,453 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 11:23:17,453 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2022-10-16 11:23:17,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 11:23:17,454 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:17,454 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] [2022-10-16 11:23:17,493 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 11:23:17,667 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 11:23:17,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:17,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash -975336089, now seen corresponding path program 1 times [2022-10-16 11:23:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502297451] [2022-10-16 11:23:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:17,685 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:17,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336561591] [2022-10-16 11:23:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:17,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:17,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:17,687 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 11:23:17,703 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 11:23:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:17,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:17,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:17,787 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 11:23:17,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:23:17,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502297451] [2022-10-16 11:23:17,788 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:17,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336561591] [2022-10-16 11:23:17,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336561591] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:23:17,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:23:17,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:23:17,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973935446] [2022-10-16 11:23:17,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:23:17,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:23:17,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:17,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:23:17,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:23:17,790 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 11:23:17,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:17,827 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2022-10-16 11:23:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:23:17,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 23 [2022-10-16 11:23:17,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:17,829 INFO L225 Difference]: With dead ends: 80 [2022-10-16 11:23:17,829 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 11:23:17,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 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 11:23:17,830 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 74 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:17,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 63 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:23:17,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 11:23:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2022-10-16 11:23:17,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 61 states have internal predecessors, (68), 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 11:23:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2022-10-16 11:23:17,838 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 23 [2022-10-16 11:23:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:17,838 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2022-10-16 11:23:17,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 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 11:23:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2022-10-16 11:23:17,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-16 11:23:17,839 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:17,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:23:17,880 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 11:23:18,055 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 11:23:18,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:18,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash -925816081, now seen corresponding path program 2 times [2022-10-16 11:23:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:18,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980007038] [2022-10-16 11:23:18,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-16 11:23:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:18,273 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 11:23:18,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:18,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980007038] [2022-10-16 11:23:18,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980007038] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:18,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362044074] [2022-10-16 11:23:18,274 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:23:18,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:18,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:18,275 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 11:23:18,280 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 11:23:18,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:23:18,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:23:18,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:23:18,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:18,404 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 11:23:18,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:18,475 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 11:23:18,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362044074] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:23:18,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 11:23:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 17 [2022-10-16 11:23:18,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173000356] [2022-10-16 11:23:18,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:18,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 11:23:18,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 11:23:18,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:23:18,478 INFO L87 Difference]: Start difference. First operand 66 states and 72 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 11:23:18,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:18,753 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2022-10-16 11:23:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:18,754 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 11:23:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:18,756 INFO L225 Difference]: With dead ends: 90 [2022-10-16 11:23:18,756 INFO L226 Difference]: Without dead ends: 87 [2022-10-16 11:23:18,757 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 11:23:18,757 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 241 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:18,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 219 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:23:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-16 11:23:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 49. [2022-10-16 11:23:18,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 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 11:23:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2022-10-16 11:23:18,764 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2022-10-16 11:23:18,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:18,764 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2022-10-16 11:23:18,765 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 11:23:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2022-10-16 11:23:18,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 11:23:18,766 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:18,766 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 11:23:18,801 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 11:23:18,980 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 11:23:18,981 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:18,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 552982255, now seen corresponding path program 1 times [2022-10-16 11:23:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:18,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782931624] [2022-10-16 11:23:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:18,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:18,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890368716] [2022-10-16 11:23:18,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:18,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:19,000 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 11:23:19,024 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 11:23:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-16 11:23:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:19,118 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 11:23:19,344 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 11:23:19,496 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 21 treesize of output 23 [2022-10-16 11:23:19,693 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-10-16 11:23:19,694 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 22 treesize of output 13 [2022-10-16 11:23:19,751 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 11:23:19,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:19,827 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_270 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_270) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|) 9223372036854775808)) is different from false [2022-10-16 11:23:19,852 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:19,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-10-16 11:23:19,864 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:19,864 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 41 treesize of output 39 [2022-10-16 11:23:19,869 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 7 treesize of output 5 [2022-10-16 11:23:21,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:21,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782931624] [2022-10-16 11:23:21,804 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:21,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890368716] [2022-10-16 11:23:21,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890368716] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:21,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:21,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2022-10-16 11:23:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049411672] [2022-10-16 11:23:21,805 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:21,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:23:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:21,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:23:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=364, Unknown=2, NotChecked=38, Total=462 [2022-10-16 11:23:21,806 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 11:23:42,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:42,321 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-10-16 11:23:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-16 11:23:42,321 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 11:23:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:42,322 INFO L225 Difference]: With dead ends: 80 [2022-10-16 11:23:42,323 INFO L226 Difference]: Without dead ends: 79 [2022-10-16 11:23:42,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=111, Invalid=593, Unknown=2, NotChecked=50, Total=756 [2022-10-16 11:23:42,324 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 36 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:42,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 275 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 110 Unchecked, 0.1s Time] [2022-10-16 11:23:42,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-10-16 11:23:42,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2022-10-16 11:23:42,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 56 states have (on average 1.25) internal successors, (70), 63 states have internal predecessors, (70), 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 11:23:42,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 76 transitions. [2022-10-16 11:23:42,334 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 76 transitions. Word has length 30 [2022-10-16 11:23:42,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:42,335 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 76 transitions. [2022-10-16 11:23:42,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 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 11:23:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 76 transitions. [2022-10-16 11:23:42,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 11:23:42,336 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:42,337 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] [2022-10-16 11:23:42,375 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 11:23:42,550 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 11:23:42,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash -37419177, now seen corresponding path program 1 times [2022-10-16 11:23:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:42,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172767804] [2022-10-16 11:23:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:42,582 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:42,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134183899] [2022-10-16 11:23:42,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:42,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:42,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:42,583 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 11:23:42,585 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 11:23:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:42,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2022-10-16 11:23:42,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:42,660 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 11:23:42,835 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 11:23:42,958 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 21 treesize of output 23 [2022-10-16 11:23:43,169 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-10-16 11:23:43,169 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 22 treesize of output 13 [2022-10-16 11:23:43,268 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 11:23:43,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:43,347 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< 0 (+ 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) is different from false [2022-10-16 11:23:43,387 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:43,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-10-16 11:23:43,405 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:43,406 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 43 treesize of output 41 [2022-10-16 11:23:43,457 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 8 treesize of output 6 [2022-10-16 11:23:43,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172767804] [2022-10-16 11:23:43,674 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:43,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134183899] [2022-10-16 11:23:43,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134183899] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:43,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:43,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-16 11:23:43,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627568020] [2022-10-16 11:23:43,675 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:43,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:23:43,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:43,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:23:43,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=294, Unknown=1, NotChecked=34, Total=380 [2022-10-16 11:23:43,677 INFO L87 Difference]: Start difference. First operand 70 states and 76 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 11:23:43,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:43,944 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2022-10-16 11:23:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:23:43,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 31 [2022-10-16 11:23:43,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:43,946 INFO L225 Difference]: With dead ends: 78 [2022-10-16 11:23:43,946 INFO L226 Difference]: Without dead ends: 77 [2022-10-16 11:23:43,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=466, Unknown=1, NotChecked=44, Total=600 [2022-10-16 11:23:43,947 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:43,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 227 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 67 Unchecked, 0.1s Time] [2022-10-16 11:23:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-16 11:23:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2022-10-16 11:23:43,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 64 states have internal predecessors, (71), 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 11:23:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2022-10-16 11:23:43,958 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 31 [2022-10-16 11:23:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2022-10-16 11:23:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 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 11:23:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2022-10-16 11:23:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 11:23:43,960 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:43,960 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] [2022-10-16 11:23:44,002 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 11:23:44,160 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 11:23:44,161 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:44,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:44,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1159994383, now seen corresponding path program 1 times [2022-10-16 11:23:44,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:44,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670106965] [2022-10-16 11:23:44,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:44,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:44,176 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:44,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822288673] [2022-10-16 11:23:44,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:44,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:44,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:44,178 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 11:23:44,197 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 11:23:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:44,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-16 11:23:44,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:44,261 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 11:23:44,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:44,283 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 18 treesize of output 18 [2022-10-16 11:23:44,286 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 11:23:44,566 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 11:23:44,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:44,637 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:44,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 28 [2022-10-16 11:23:44,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:44,806 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:44,807 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 17 treesize of output 10 [2022-10-16 11:23:44,826 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 11:23:44,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:45,021 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_342 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_342) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1)) is different from false [2022-10-16 11:23:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670106965] [2022-10-16 11:23:45,090 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:45,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822288673] [2022-10-16 11:23:45,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822288673] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:45,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:45,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-10-16 11:23:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015647600] [2022-10-16 11:23:45,090 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:45,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-16 11:23:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-16 11:23:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=425, Unknown=1, NotChecked=42, Total=552 [2022-10-16 11:23:45,092 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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 11:23:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:45,260 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-10-16 11:23:45,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-16 11:23:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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 32 [2022-10-16 11:23:45,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:45,263 INFO L225 Difference]: With dead ends: 111 [2022-10-16 11:23:45,263 INFO L226 Difference]: Without dead ends: 76 [2022-10-16 11:23:45,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=501, Unknown=1, NotChecked=46, Total=650 [2022-10-16 11:23:45,264 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 22 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:45,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 347 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2022-10-16 11:23:45,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-10-16 11:23:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2022-10-16 11:23:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 65 states have internal predecessors, (71), 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 11:23:45,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2022-10-16 11:23:45,274 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 32 [2022-10-16 11:23:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:45,274 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2022-10-16 11:23:45,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 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 11:23:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2022-10-16 11:23:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-10-16 11:23:45,275 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:45,275 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] [2022-10-16 11:23:45,315 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 11:23:45,490 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 11:23:45,491 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1600087399, now seen corresponding path program 1 times [2022-10-16 11:23:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:45,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121816914] [2022-10-16 11:23:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:45,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:45,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022844357] [2022-10-16 11:23:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:45,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:45,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:45,507 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 11:23:45,527 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 11:23:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:23:45,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 30 conjunts are in the unsatisfiable core [2022-10-16 11:23:45,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:45,586 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 11:23:45,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:45,605 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 11:23:45,609 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 11:23:45,869 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-16 11:23:45,955 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:23:45,958 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:23:45,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 34 treesize of output 28 [2022-10-16 11:23:46,072 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 11:23:46,103 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 11:23:46,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:23:46,266 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_380 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_380) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1))) is different from false [2022-10-16 11:23:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:23:46,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121816914] [2022-10-16 11:23:46,333 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:23:46,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022844357] [2022-10-16 11:23:46,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022844357] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:23:46,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:23:46,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-10-16 11:23:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858980972] [2022-10-16 11:23:46,334 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:23:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 11:23:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:23:46,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 11:23:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=348, Unknown=1, NotChecked=38, Total=462 [2022-10-16 11:23:46,335 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 11:23:46,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:23:46,690 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2022-10-16 11:23:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:23:46,691 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 11:23:46,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:23:46,692 INFO L225 Difference]: With dead ends: 107 [2022-10-16 11:23:46,692 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 11:23:46,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=130, Invalid=523, Unknown=1, NotChecked=48, Total=702 [2022-10-16 11:23:46,693 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 114 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:23:46,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 316 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-10-16 11:23:46,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 11:23:46,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 73. [2022-10-16 11:23:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.2203389830508475) internal successors, (72), 66 states have internal predecessors, (72), 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 11:23:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2022-10-16 11:23:46,704 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 33 [2022-10-16 11:23:46,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:23:46,704 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2022-10-16 11:23:46,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 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 11:23:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2022-10-16 11:23:46,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-16 11:23:46,705 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:23:46,705 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] [2022-10-16 11:23:46,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 11:23:46,919 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 11:23:46,920 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:23:46,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:23:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash -807489549, now seen corresponding path program 2 times [2022-10-16 11:23:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:23:46,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414200358] [2022-10-16 11:23:46,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:23:46,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:23:46,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:23:46,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479032459] [2022-10-16 11:23:46,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:23:46,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:23:46,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:23:46,939 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 11:23:46,954 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 11:23:47,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:23:47,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:23:47,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-16 11:23:47,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:23:47,038 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 11:23:47,056 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 11:23:47,061 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 11:23:47,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:47,147 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 26 treesize of output 28 [2022-10-16 11:23:47,152 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 11:23:47,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:23:47,673 INFO L356 Elim1Store]: treesize reduction 34, result has 49.3 percent of original size [2022-10-16 11:23:47,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 50 [2022-10-16 11:23:52,027 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-10-16 11:23:52,028 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2022-10-16 11:24:08,846 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 46 DAG size of output: 42 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:24:15,110 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:24:15,110 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 67 treesize of output 75 [2022-10-16 11:24:35,026 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 15 DAG size of output: 13 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:24:35,028 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 11:24:35,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:24:48,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:48,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414200358] [2022-10-16 11:24:48,671 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:48,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479032459] [2022-10-16 11:24:48,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479032459] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:24:48,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:24:48,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-10-16 11:24:48,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625120398] [2022-10-16 11:24:48,671 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:24:48,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-16 11:24:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:48,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-16 11:24:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=281, Unknown=20, NotChecked=0, Total=380 [2022-10-16 11:24:48,673 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 11:24:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:56,825 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-10-16 11:24:56,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:24:56,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 11:24:56,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:56,826 INFO L225 Difference]: With dead ends: 97 [2022-10-16 11:24:56,827 INFO L226 Difference]: Without dead ends: 96 [2022-10-16 11:24:56,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 68.4s TimeCoverageRelationStatistics Valid=98, Invalid=342, Unknown=22, NotChecked=0, Total=462 [2022-10-16 11:24:56,828 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 23 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:56,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 318 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 204 Unchecked, 0.1s Time] [2022-10-16 11:24:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-16 11:24:56,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2022-10-16 11:24:56,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 78 states have (on average 1.205128205128205) internal successors, (94), 85 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:24:56,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-10-16 11:24:56,841 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 34 [2022-10-16 11:24:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:56,841 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-10-16 11:24:56,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 11:24:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-10-16 11:24:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 11:24:56,842 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:56,843 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] [2022-10-16 11:24:56,877 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 11:24:57,058 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 11:24:57,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:24:57,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:57,059 INFO L85 PathProgramCache]: Analyzing trace with hash -85695013, now seen corresponding path program 1 times [2022-10-16 11:24:57,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107135387] [2022-10-16 11:24:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:57,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:57,073 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:57,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941177988] [2022-10-16 11:24:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:57,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:57,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:57,075 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 11:24:57,090 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 11:24:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:24:57,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:24:57,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:57,157 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 11:24:57,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:24:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:24:57,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107135387] [2022-10-16 11:24:57,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:24:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941177988] [2022-10-16 11:24:57,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941177988] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:24:57,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:24:57,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:24:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532581335] [2022-10-16 11:24:57,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:24:57,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:24:57,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:24:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:24:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:24:57,160 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 11:24:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:24:57,207 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2022-10-16 11:24:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:24:57,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 35 [2022-10-16 11:24:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:24:57,209 INFO L225 Difference]: With dead ends: 107 [2022-10-16 11:24:57,209 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 11:24:57,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 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 11:24:57,210 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 12 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:24:57,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:24:57,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 11:24:57,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2022-10-16 11:24:57,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 91 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:24:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-10-16 11:24:57,224 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 35 [2022-10-16 11:24:57,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:24:57,225 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-10-16 11:24:57,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 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 11:24:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-10-16 11:24:57,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 11:24:57,226 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:24:57,226 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] [2022-10-16 11:24:57,263 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 11:24:57,440 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 11:24:57,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:24:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:24:57,442 INFO L85 PathProgramCache]: Analyzing trace with hash 737627859, now seen corresponding path program 2 times [2022-10-16 11:24:57,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:24:57,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250007158] [2022-10-16 11:24:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:24:57,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:24:57,458 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:24:57,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968085456] [2022-10-16 11:24:57,458 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:24:57,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:24:57,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:24:57,459 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 11:24:57,480 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 11:24:57,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:24:57,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:24:57,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-16 11:24:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:24:57,547 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 11:24:57,573 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 11:24:57,581 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 18 treesize of output 20 [2022-10-16 11:24:57,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:24:57,686 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 26 treesize of output 28 [2022-10-16 11:24:57,695 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 11:24:58,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:24:58,032 INFO L356 Elim1Store]: treesize reduction 34, result has 49.3 percent of original size [2022-10-16 11:24:58,033 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 50 [2022-10-16 11:24:58,347 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-10-16 11:24:58,348 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 67 [2022-10-16 11:24:58,982 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:24:58,982 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 71 treesize of output 79 [2022-10-16 11:24:59,211 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 11:24:59,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:05,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:05,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250007158] [2022-10-16 11:25:05,540 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:05,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968085456] [2022-10-16 11:25:05,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968085456] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:05,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:05,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-10-16 11:25:05,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027161140] [2022-10-16 11:25:05,541 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:25:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:05,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:25:05,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=237, Unknown=3, NotChecked=0, Total=306 [2022-10-16 11:25:05,542 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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 11:25:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:05,829 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2022-10-16 11:25:05,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:25:05,830 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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 35 [2022-10-16 11:25:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:05,831 INFO L225 Difference]: With dead ends: 127 [2022-10-16 11:25:05,831 INFO L226 Difference]: Without dead ends: 126 [2022-10-16 11:25:05,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=84, Invalid=293, Unknown=3, NotChecked=0, Total=380 [2022-10-16 11:25:05,832 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 41 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:05,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 154 Invalid, 0 Unknown, 219 Unchecked, 0.1s Time] [2022-10-16 11:25:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-16 11:25:05,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2022-10-16 11:25:05,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 85 states have (on average 1.2352941176470589) internal successors, (105), 92 states have internal predecessors, (105), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:25:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2022-10-16 11:25:05,845 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 35 [2022-10-16 11:25:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:05,846 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2022-10-16 11:25:05,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 13 states have internal predecessors, (31), 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 11:25:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2022-10-16 11:25:05,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:05,846 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:05,847 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] [2022-10-16 11:25:05,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-10-16 11:25:06,060 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 11:25:06,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:06,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1638422005, now seen corresponding path program 1 times [2022-10-16 11:25:06,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:06,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261153078] [2022-10-16 11:25:06,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:06,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:06,087 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50182020] [2022-10-16 11:25:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:06,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:06,089 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 11:25:06,113 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 11:25:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:06,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:25:06,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:06,198 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 11:25:06,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:25:06,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:06,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261153078] [2022-10-16 11:25:06,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:06,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50182020] [2022-10-16 11:25:06,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50182020] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:25:06,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:25:06,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:25:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301823648] [2022-10-16 11:25:06,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:25:06,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:25:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:06,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:25:06,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:25:06,201 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 11:25:06,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:06,248 INFO L93 Difference]: Finished difference Result 101 states and 113 transitions. [2022-10-16 11:25:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:25:06,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 36 [2022-10-16 11:25:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:06,250 INFO L225 Difference]: With dead ends: 101 [2022-10-16 11:25:06,251 INFO L226 Difference]: Without dead ends: 100 [2022-10-16 11:25:06,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 11:25:06,252 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 27 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:06,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 69 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:25:06,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-16 11:25:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-16 11:25:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 85 states have (on average 1.223529411764706) internal successors, (104), 91 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-16 11:25:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2022-10-16 11:25:06,270 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 36 [2022-10-16 11:25:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:06,271 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2022-10-16 11:25:06,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 11:25:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2022-10-16 11:25:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:06,272 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:06,272 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] [2022-10-16 11:25:06,313 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 11:25:06,486 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 11:25:06,487 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:06,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1391627253, now seen corresponding path program 2 times [2022-10-16 11:25:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:06,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138416875] [2022-10-16 11:25:06,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:06,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:06,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:06,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578031200] [2022-10-16 11:25:06,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:25:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:06,504 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 11:25:06,513 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 11:25:06,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:25:06,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:25:06,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 11:25:06,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:06,596 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 11:25:06,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:06,615 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 11:25:06,619 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 11:25:06,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:06,682 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 11:25:09,378 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 25 treesize of output 25 [2022-10-16 11:25:11,261 INFO L356 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-10-16 11:25:11,261 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 22 [2022-10-16 11:25:13,216 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 11:25:13,234 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 11:25:13,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:13,378 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_606 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_606) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1)) is different from false [2022-10-16 11:25:13,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:13,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138416875] [2022-10-16 11:25:13,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:13,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578031200] [2022-10-16 11:25:13,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578031200] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:13,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:13,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-10-16 11:25:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779799402] [2022-10-16 11:25:13,393 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:13,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:25:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:25:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=242, Unknown=8, NotChecked=32, Total=342 [2022-10-16 11:25:13,394 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 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 11:25:15,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:15,194 INFO L93 Difference]: Finished difference Result 157 states and 174 transitions. [2022-10-16 11:25:15,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 11:25:15,195 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 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 36 [2022-10-16 11:25:15,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:15,197 INFO L225 Difference]: With dead ends: 157 [2022-10-16 11:25:15,197 INFO L226 Difference]: Without dead ends: 156 [2022-10-16 11:25:15,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=117, Invalid=430, Unknown=9, NotChecked=44, Total=600 [2022-10-16 11:25:15,198 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 103 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:15,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 297 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 214 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2022-10-16 11:25:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-16 11:25:15,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 114. [2022-10-16 11:25:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 104 states have internal predecessors, (121), 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 11:25:15,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2022-10-16 11:25:15,217 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 36 [2022-10-16 11:25:15,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:15,218 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2022-10-16 11:25:15,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 13 states have internal predecessors, (32), 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 11:25:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2022-10-16 11:25:15,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-16 11:25:15,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:15,219 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] [2022-10-16 11:25:15,245 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 11:25:15,430 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 11:25:15,430 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:15,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:15,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1175348943, now seen corresponding path program 1 times [2022-10-16 11:25:15,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:15,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362021726] [2022-10-16 11:25:15,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:15,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:15,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105526386] [2022-10-16 11:25:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:15,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:15,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:15,453 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 11:25:15,455 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 11:25:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:25:15,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 11:25:15,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:15,533 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 11:25:15,554 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 14 treesize of output 14 [2022-10-16 11:25:15,560 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 11:25:15,604 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:25:15,605 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 11:25:15,610 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 11:25:15,772 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-16 11:25:15,773 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 23 treesize of output 28 [2022-10-16 11:25:25,369 WARN L233 SmtUtils]: Spent 7.55s on a formula simplification. DAG size of input: 32 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:25:25,433 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 17 treesize of output 19 [2022-10-16 11:25:32,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-10-16 11:25:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:25:45,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:45,446 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_661 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|) 9223372036854775808)) is different from false [2022-10-16 11:25:45,469 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_660 Int) (v_ArrVal_661 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int)) (or (not (<= v_ArrVal_660 (* |c_ULTIMATE.start_main_~count~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))) (< (+ |c_ULTIMATE.start_main_~sum~0#1| (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|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_660)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 9223372036854775808))) is different from false [2022-10-16 11:25:45,512 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~num~0#1| Int) (|ULTIMATE.start_main_~count~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (not (<= .cse0 2147483647)) (forall ((v_ArrVal_660 Int) (v_ArrVal_661 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int)) (or (< (+ |c_ULTIMATE.start_main_~sum~0#1| (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|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_660)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_661) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)) 9223372036854775808) (not (<= v_ArrVal_660 .cse0))))))) is different from false [2022-10-16 11:25:45,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362021726] [2022-10-16 11:25:45,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:45,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105526386] [2022-10-16 11:25:45,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105526386] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:45,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:45,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-10-16 11:25:45,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932298667] [2022-10-16 11:25:45,577 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:45,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:25:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:45,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:25:45,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=12, NotChecked=72, Total=240 [2022-10-16 11:25:45,578 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 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 11:25:52,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:25:52,055 INFO L93 Difference]: Finished difference Result 139 states and 161 transitions. [2022-10-16 11:25:52,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:25:52,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 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 36 [2022-10-16 11:25:52,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:25:52,057 INFO L225 Difference]: With dead ends: 139 [2022-10-16 11:25:52,057 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 11:25:52,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=12, NotChecked=84, Total=306 [2022-10-16 11:25:52,058 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 52 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:25:52,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 196 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-10-16 11:25:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 11:25:52,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2022-10-16 11:25:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 114 states have (on average 1.219298245614035) internal successors, (139), 120 states have internal predecessors, (139), 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 11:25:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 151 transitions. [2022-10-16 11:25:52,080 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 151 transitions. Word has length 36 [2022-10-16 11:25:52,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:25:52,081 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 151 transitions. [2022-10-16 11:25:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 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 11:25:52,081 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 151 transitions. [2022-10-16 11:25:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:25:52,082 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:25:52,082 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] [2022-10-16 11:25:52,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-10-16 11:25:52,295 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 11:25:52,296 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:25:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:25:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 190771989, now seen corresponding path program 2 times [2022-10-16 11:25:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:25:52,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351442663] [2022-10-16 11:25:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:25:52,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:25:52,314 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:25:52,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1769417887] [2022-10-16 11:25:52,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:25:52,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:25:52,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:25:52,317 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 11:25:52,333 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 11:25:52,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:25:52,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:25:52,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 37 conjunts are in the unsatisfiable core [2022-10-16 11:25:52,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:25:52,409 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 11:25:52,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:52,429 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 11:25:52,432 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 11:25:52,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:25:52,495 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 11:25:56,165 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 25 treesize of output 25 [2022-10-16 11:25:56,353 INFO L356 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2022-10-16 11:25:56,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 22 [2022-10-16 11:25:56,409 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 11:25:56,432 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 11:25:56,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:25:56,558 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_716 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_716) |c_ULTIMATE.start_main_~#array2~0#1.base|) |c_ULTIMATE.start_main_~#array2~0#1.offset|) 1))) is different from false [2022-10-16 11:25:56,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:25:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351442663] [2022-10-16 11:25:56,570 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:25:56,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769417887] [2022-10-16 11:25:56,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769417887] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:25:56,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:25:56,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-10-16 11:25:56,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971558059] [2022-10-16 11:25:56,571 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:25:56,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:25:56,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:25:56,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:25:56,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=4, NotChecked=28, Total=272 [2022-10-16 11:25:56,572 INFO L87 Difference]: Start difference. First operand 132 states and 151 transitions. Second operand has 12 states, 11 states have (on average 3.0) 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 11:26:00,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:00,355 INFO L93 Difference]: Finished difference Result 173 states and 192 transitions. [2022-10-16 11:26:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-16 11:26:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) 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 11:26:00,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:00,357 INFO L225 Difference]: With dead ends: 173 [2022-10-16 11:26:00,357 INFO L226 Difference]: Without dead ends: 172 [2022-10-16 11:26:00,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=93, Invalid=324, Unknown=7, NotChecked=38, Total=462 [2022-10-16 11:26:00,359 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 85 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:00,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 346 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 198 Invalid, 0 Unknown, 80 Unchecked, 0.3s Time] [2022-10-16 11:26:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-10-16 11:26:00,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 127. [2022-10-16 11:26:00,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 115 states have internal predecessors, (134), 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 11:26:00,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 146 transitions. [2022-10-16 11:26:00,381 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 146 transitions. Word has length 37 [2022-10-16 11:26:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:00,381 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 146 transitions. [2022-10-16 11:26:00,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) 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 11:26:00,382 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 146 transitions. [2022-10-16 11:26:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-10-16 11:26:00,382 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:00,382 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] [2022-10-16 11:26:00,410 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 11:26:00,593 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 11:26:00,594 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:00,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:00,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2076078967, now seen corresponding path program 1 times [2022-10-16 11:26:00,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:00,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696902885] [2022-10-16 11:26:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:00,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:00,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:00,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109335920] [2022-10-16 11:26:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:00,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:00,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:00,609 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 11:26:00,636 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 11:26:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:00,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 11:26:00,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:00,714 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 11:26:00,738 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 14 treesize of output 14 [2022-10-16 11:26:00,743 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 11:26:00,796 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-10-16 11:26:00,797 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 11:26:00,810 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 25 treesize of output 25 [2022-10-16 11:26:00,954 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-10-16 11:26:00,954 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 23 treesize of output 28 [2022-10-16 11:26:01,129 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 17 treesize of output 19 [2022-10-16 11:26:01,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-10-16 11:26:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:26:01,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:26:01,353 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_771 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1|))) is different from false [2022-10-16 11:26:01,391 WARN L833 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~num~0#1| Int) (|ULTIMATE.start_main_~count~0#1| Int) (|ULTIMATE.start_main_~index~0#1| Int)) (let ((.cse0 (* |ULTIMATE.start_main_~count~0#1| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (or (forall ((v_ArrVal_770 Int) (v_ArrVal_771 (Array Int Int))) (or (not (<= .cse0 v_ArrVal_770)) (< 0 (+ (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|) (+ (* 4 |ULTIMATE.start_main_~index~0#1|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) v_ArrVal_770)) |c_ULTIMATE.start_main_~#array2~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) 9223372036854775809 |c_ULTIMATE.start_main_~sum~0#1|)))) (not (<= 0 (+ .cse0 2147483648)))))) is different from false [2022-10-16 11:26:01,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:26:01,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696902885] [2022-10-16 11:26:01,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:26:01,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109335920] [2022-10-16 11:26:01,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109335920] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:26:01,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:26:01,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2022-10-16 11:26:01,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783151027] [2022-10-16 11:26:01,483 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:26:01,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-16 11:26:01,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:26:01,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-16 11:26:01,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=102, Unknown=2, NotChecked=42, Total=182 [2022-10-16 11:26:01,484 INFO L87 Difference]: Start difference. First operand 127 states and 146 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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 11:26:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:03,600 INFO L93 Difference]: Finished difference Result 131 states and 151 transitions. [2022-10-16 11:26:03,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-16 11:26:03,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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 37 [2022-10-16 11:26:03,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:03,602 INFO L225 Difference]: With dead ends: 131 [2022-10-16 11:26:03,602 INFO L226 Difference]: Without dead ends: 130 [2022-10-16 11:26:03,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=46, Invalid=116, Unknown=2, NotChecked=46, Total=210 [2022-10-16 11:26:03,603 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 35 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:03,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 243 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2022-10-16 11:26:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-10-16 11:26:03,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2022-10-16 11:26:03,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 116 states have internal predecessors, (135), 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 11:26:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2022-10-16 11:26:03,627 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 37 [2022-10-16 11:26:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:03,627 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2022-10-16 11:26:03,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 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 11:26:03,627 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2022-10-16 11:26:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:26:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:03,628 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 11:26:03,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-10-16 11:26:03,843 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 11:26:03,844 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:03,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:03,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1729447734, now seen corresponding path program 1 times [2022-10-16 11:26:03,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:03,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707384475] [2022-10-16 11:26:03,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:03,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:03,857 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:03,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355462658] [2022-10-16 11:26:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:03,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:03,859 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 11:26:03,882 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 11:26:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:03,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 39 conjunts are in the unsatisfiable core [2022-10-16 11:26:03,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:03,957 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 11:26:03,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:26:03,982 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 11:26:03,986 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 11:26:04,372 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 23 treesize of output 22 [2022-10-16 11:26:12,045 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:26:12,047 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2022-10-16 11:26:21,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:26:21,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2022-10-16 11:26:25,543 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~num~0#1| Int) (|v_ULTIMATE.start_main_~count~0#1_51| Int)) (let ((.cse0 (* |v_ULTIMATE.start_main_~count~0#1_51| |ULTIMATE.start_main_~num~0#1| |ULTIMATE.start_main_~num~0#1|))) (and (<= |c_ULTIMATE.start_main_~sum~0#1| .cse0) (<= .cse0 2147483647)))) is different from true [2022-10-16 11:26:25,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-10-16 11:26:25,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:26:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:26:26,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707384475] [2022-10-16 11:26:26,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:26:26,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355462658] [2022-10-16 11:26:26,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355462658] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 11:26:26,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-16 11:26:26,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-10-16 11:26:26,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394297984] [2022-10-16 11:26:26,354 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-16 11:26:26,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-10-16 11:26:26,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:26:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-10-16 11:26:26,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=599, Unknown=5, NotChecked=50, Total=756 [2022-10-16 11:26:26,356 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 11:26:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:29,177 INFO L93 Difference]: Finished difference Result 146 states and 167 transitions. [2022-10-16 11:26:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 11:26:29,178 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 11:26:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:29,179 INFO L225 Difference]: With dead ends: 146 [2022-10-16 11:26:29,179 INFO L226 Difference]: Without dead ends: 145 [2022-10-16 11:26:29,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=127, Invalid=742, Unknown=5, NotChecked=56, Total=930 [2022-10-16 11:26:29,181 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 18 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:29,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 289 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 231 Unchecked, 0.2s Time] [2022-10-16 11:26:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-16 11:26:29,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2022-10-16 11:26:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 121 states have (on average 1.2148760330578512) internal successors, (147), 127 states have internal predecessors, (147), 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 11:26:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 159 transitions. [2022-10-16 11:26:29,207 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 159 transitions. Word has length 38 [2022-10-16 11:26:29,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:29,208 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 159 transitions. [2022-10-16 11:26:29,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 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 11:26:29,208 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 159 transitions. [2022-10-16 11:26:29,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:26:29,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:29,209 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] [2022-10-16 11:26:29,249 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 11:26:29,425 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 11:26:29,426 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:29,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1729447689, now seen corresponding path program 1 times [2022-10-16 11:26:29,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:29,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199207449] [2022-10-16 11:26:29,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:29,439 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:29,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525164429] [2022-10-16 11:26:29,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:29,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:29,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:29,441 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 11:26:29,462 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 11:26:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:29,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:26:29,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:26:29,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:26:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:26:29,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:26:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199207449] [2022-10-16 11:26:29,692 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:26:29,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525164429] [2022-10-16 11:26:29,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525164429] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:26:29,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:26:29,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-10-16 11:26:29,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324825894] [2022-10-16 11:26:29,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:26:29,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:26:29,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:26:29,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:26:29,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:26:29,695 INFO L87 Difference]: Start difference. First operand 139 states and 159 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:26:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:26:29,907 INFO L93 Difference]: Finished difference Result 196 states and 214 transitions. [2022-10-16 11:26:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-16 11:26:29,908 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-10-16 11:26:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:26:29,909 INFO L225 Difference]: With dead ends: 196 [2022-10-16 11:26:29,909 INFO L226 Difference]: Without dead ends: 179 [2022-10-16 11:26:29,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-10-16 11:26:29,910 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 86 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:26:29,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 274 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:26:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-10-16 11:26:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 166. [2022-10-16 11:26:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 146 states have (on average 1.2123287671232876) internal successors, (177), 152 states have internal predecessors, (177), 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 11:26:29,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2022-10-16 11:26:29,940 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 38 [2022-10-16 11:26:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:26:29,940 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2022-10-16 11:26:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-16 11:26:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2022-10-16 11:26:29,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:26:29,941 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:26:29,941 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] [2022-10-16 11:26:29,967 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-10-16 11:26:30,153 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 11:26:30,154 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-10-16 11:26:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:26:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash -66061359, now seen corresponding path program 1 times [2022-10-16 11:26:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:26:30,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962542927] [2022-10-16 11:26:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:26:30,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:26:30,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051655341] [2022-10-16 11:26:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:26:30,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:26:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:26:30,170 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 11:26:30,180 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 11:26:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:26:30,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 42 conjunts are in the unsatisfiable core [2022-10-16 11:26:30,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:26:30,301 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 11:26:30,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:26:30,321 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 11:26:30,324 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 11:26:30,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-16 11:26:30,397 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 11:26:40,298 INFO L356 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-10-16 11:26:40,299 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 1 case distinctions, treesize of input 34 treesize of output 44 [2022-10-16 11:26:50,653 INFO L356 Elim1Store]: treesize reduction 27, result has 32.5 percent of original size [2022-10-16 11:26:50,654 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 2 case distinctions, treesize of input 56 treesize of output 67 [2022-10-16 11:27:24,856 WARN L233 SmtUtils]: Spent 16.63s on a formula simplification. DAG size of input: 59 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:27:33,764 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-10-16 11:27:33,765 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 123 treesize of output 285