/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/array23_pattern.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 11:18:28,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 11:18:28,039 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 11:18:28,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 11:18:28,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 11:18:28,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 11:18:28,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 11:18:28,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 11:18:28,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 11:18:28,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 11:18:28,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 11:18:28,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 11:18:28,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 11:18:28,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 11:18:28,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 11:18:28,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 11:18:28,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 11:18:28,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 11:18:28,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 11:18:28,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 11:18:28,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 11:18:28,102 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 11:18:28,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 11:18:28,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 11:18:28,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 11:18:28,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 11:18:28,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 11:18:28,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 11:18:28,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 11:18:28,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 11:18:28,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 11:18:28,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 11:18:28,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 11:18:28,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 11:18:28,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 11:18:28,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 11:18:28,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 11:18:28,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 11:18:28,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 11:18:28,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 11:18:28,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 11:18:28,121 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 11:18:28,154 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 11:18:28,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 11:18:28,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 11:18:28,155 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 11:18:28,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 11:18:28,156 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 11:18:28,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 11:18:28,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 11:18:28,158 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 11:18:28,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 11:18:28,159 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 11:18:28,159 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 11:18:28,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 11:18:28,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 11:18:28,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 11:18:28,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 11:18:28,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 11:18:28,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 11:18:28,162 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 11:18:28,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 11:18:28,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 11:18:28,162 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 11:18:28,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 11:18:28,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 11:18:28,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 11:18:28,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 11:18:28,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:18:28,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 11:18:28,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 11:18:28,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 11:18:28,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 11:18:28,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 11:18:28,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 11:18:28,166 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 11:18:28,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 11:18:28,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 11:18:28,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 11:18:28,573 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 11:18:28,574 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 11:18:28,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-patterns/array23_pattern.c [2022-10-16 11:18:28,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f39fdba/929d935efe9342638226318b06a9aaf8/FLAG7435990e0 [2022-10-16 11:18:29,310 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 11:18:29,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-patterns/array23_pattern.c [2022-10-16 11:18:29,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f39fdba/929d935efe9342638226318b06a9aaf8/FLAG7435990e0 [2022-10-16 11:18:29,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53f39fdba/929d935efe9342638226318b06a9aaf8 [2022-10-16 11:18:29,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 11:18:29,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 11:18:29,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 11:18:29,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 11:18:29,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 11:18:29,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:29,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a61e882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29, skipping insertion in model container [2022-10-16 11:18:29,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:29,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 11:18:29,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 11:18:29,890 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/array23_pattern.c[1347,1360] [2022-10-16 11:18:29,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:18:29,926 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 11:18:29,940 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/array23_pattern.c[1347,1360] [2022-10-16 11:18:29,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 11:18:29,969 INFO L208 MainTranslator]: Completed translation [2022-10-16 11:18:29,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29 WrapperNode [2022-10-16 11:18:29,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 11:18:29,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 11:18:29,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 11:18:29,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 11:18:29,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:29,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,015 INFO L138 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 128 [2022-10-16 11:18:30,016 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 11:18:30,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 11:18:30,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 11:18:30,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 11:18:30,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,046 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 11:18:30,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 11:18:30,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 11:18:30,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 11:18:30,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (1/1) ... [2022-10-16 11:18:30,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 11:18:30,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:30,104 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 11:18:30,118 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 11:18:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2022-10-16 11:18:30,162 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2022-10-16 11:18:30,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 11:18:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-10-16 11:18:30,163 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-10-16 11:18:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 11:18:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 11:18:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 11:18:30,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 11:18:30,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 11:18:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 11:18:30,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 11:18:30,242 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 11:18:30,244 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 11:18:30,691 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 11:18:30,700 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 11:18:30,700 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-16 11:18:30,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:18:30 BoogieIcfgContainer [2022-10-16 11:18:30,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 11:18:30,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 11:18:30,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 11:18:30,709 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 11:18:30,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:18:29" (1/3) ... [2022-10-16 11:18:30,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125e10fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:18:30, skipping insertion in model container [2022-10-16 11:18:30,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:18:29" (2/3) ... [2022-10-16 11:18:30,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@125e10fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:18:30, skipping insertion in model container [2022-10-16 11:18:30,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:18:30" (3/3) ... [2022-10-16 11:18:30,712 INFO L112 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2022-10-16 11:18:30,733 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 11:18:30,733 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-10-16 11:18:30,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 11:18:30,805 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;@13c94281, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 11:18:30,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-10-16 11:18:30,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 55 states have (on average 1.709090909090909) internal successors, (94), 77 states have internal predecessors, (94), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:18:30,819 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:30,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:30,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:30,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash -875693040, now seen corresponding path program 1 times [2022-10-16 11:18:30,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:30,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992435871] [2022-10-16 11:18:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:30,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992435871] [2022-10-16 11:18:30,986 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-16 11:18:30,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867547328] [2022-10-16 11:18:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:30,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:30,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:30,990 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 11:18:31,013 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 11:18:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:31,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-16 11:18:31,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:31,140 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 11:18:31,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:31,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867547328] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:31,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:31,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:18:31,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012001336] [2022-10-16 11:18:31,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:31,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 11:18:31,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:31,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 11:18:31,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 11:18:31,198 INFO L87 Difference]: Start difference. First operand has 85 states, 55 states have (on average 1.709090909090909) internal successors, (94), 77 states have internal predecessors, (94), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:18:31,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:31,251 INFO L93 Difference]: Finished difference Result 166 states and 207 transitions. [2022-10-16 11:18:31,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 11:18:31,254 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 12 [2022-10-16 11:18:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:31,267 INFO L225 Difference]: With dead ends: 166 [2022-10-16 11:18:31,267 INFO L226 Difference]: Without dead ends: 77 [2022-10-16 11:18:31,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 11:18:31,293 INFO L413 NwaCegarLoop]: 95 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, 95 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 11:18:31,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:31,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-10-16 11:18:31,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-10-16 11:18:31,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.5918367346938775) internal successors, (78), 69 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2022-10-16 11:18:31,368 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 12 [2022-10-16 11:18:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:31,368 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2022-10-16 11:18:31,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 11:18:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2022-10-16 11:18:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:18:31,371 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:31,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:31,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-10-16 11:18:31,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 11:18:31,587 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:31,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1685039666, now seen corresponding path program 1 times [2022-10-16 11:18:31,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:31,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988670911] [2022-10-16 11:18:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:31,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:31,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697122511] [2022-10-16 11:18:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:31,610 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 11:18:31,616 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 11:18:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:31,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:18:31,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:31,738 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 11:18:31,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:31,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:31,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988670911] [2022-10-16 11:18:31,739 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:31,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697122511] [2022-10-16 11:18:31,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697122511] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:31,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:31,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:18:31,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625667118] [2022-10-16 11:18:31,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:31,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:31,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:31,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:31,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:31,743 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:18:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:31,885 INFO L93 Difference]: Finished difference Result 226 states and 259 transitions. [2022-10-16 11:18:31,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:18:31,886 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-10-16 11:18:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:31,888 INFO L225 Difference]: With dead ends: 226 [2022-10-16 11:18:31,888 INFO L226 Difference]: Without dead ends: 153 [2022-10-16 11:18:31,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 11:18:31,891 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 89 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:31,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 238 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:31,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-10-16 11:18:31,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 81. [2022-10-16 11:18:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 53 states have (on average 1.5660377358490567) internal successors, (83), 73 states have internal predecessors, (83), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-10-16 11:18:31,909 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 12 [2022-10-16 11:18:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:31,909 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-10-16 11:18:31,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11:18:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-10-16 11:18:31,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 11:18:31,910 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:31,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:31,947 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 11:18:32,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-16 11:18:32,126 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1685038000, now seen corresponding path program 1 times [2022-10-16 11:18:32,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:32,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577448538] [2022-10-16 11:18:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:32,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:32,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:32,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420651386] [2022-10-16 11:18:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:32,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:32,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:32,151 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 11:18:32,165 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 11:18:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:32,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:32,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:32,253 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 11:18:32,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:32,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:32,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577448538] [2022-10-16 11:18:32,254 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:32,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420651386] [2022-10-16 11:18:32,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420651386] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:32,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:32,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305982430] [2022-10-16 11:18:32,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:32,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:32,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:32,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:32,260 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 11:18:32,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:32,361 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2022-10-16 11:18:32,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:18:32,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-10-16 11:18:32,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:32,364 INFO L225 Difference]: With dead ends: 142 [2022-10-16 11:18:32,364 INFO L226 Difference]: Without dead ends: 141 [2022-10-16 11:18:32,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 11:18:32,367 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 58 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 264 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:32,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-10-16 11:18:32,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 84. [2022-10-16 11:18:32,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 56 states have (on average 1.5535714285714286) internal successors, (87), 76 states have internal predecessors, (87), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 97 transitions. [2022-10-16 11:18:32,383 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 97 transitions. Word has length 12 [2022-10-16 11:18:32,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:32,384 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 97 transitions. [2022-10-16 11:18:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 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 11:18:32,384 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 97 transitions. [2022-10-16 11:18:32,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-16 11:18:32,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:32,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:32,418 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 11:18:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:32,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:32,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:32,601 INFO L85 PathProgramCache]: Analyzing trace with hash -696570376, now seen corresponding path program 1 times [2022-10-16 11:18:32,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:32,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789464465] [2022-10-16 11:18:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:32,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:32,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:32,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32936526] [2022-10-16 11:18:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:32,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:32,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:32,622 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 11:18:32,642 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 11:18:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:32,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:32,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:32,694 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 11:18:32,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:32,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:32,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789464465] [2022-10-16 11:18:32,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:32,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32936526] [2022-10-16 11:18:32,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32936526] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:32,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:32,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:32,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107270337] [2022-10-16 11:18:32,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:32,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:32,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:32,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:32,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:32,698 INFO L87 Difference]: Start difference. First operand 84 states and 97 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11:18:32,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:32,746 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2022-10-16 11:18:32,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:18:32,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2022-10-16 11:18:32,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:32,748 INFO L225 Difference]: With dead ends: 100 [2022-10-16 11:18:32,748 INFO L226 Difference]: Without dead ends: 99 [2022-10-16 11:18:32,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 11:18:32,754 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 57 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:32,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 199 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:32,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-10-16 11:18:32,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 83. [2022-10-16 11:18:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.5357142857142858) internal successors, (86), 75 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 96 transitions. [2022-10-16 11:18:32,781 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 96 transitions. Word has length 13 [2022-10-16 11:18:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:32,782 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 96 transitions. [2022-10-16 11:18:32,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11:18:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 96 transitions. [2022-10-16 11:18:32,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:18:32,785 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:32,785 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:32,809 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 11:18:32,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:32,993 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:32,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:32,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1753966794, now seen corresponding path program 1 times [2022-10-16 11:18:32,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:32,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026968587] [2022-10-16 11:18:32,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:33,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:33,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488509664] [2022-10-16 11:18:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:33,041 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 11:18:33,053 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 11:18:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:33,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:33,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:18:33,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:33,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:33,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026968587] [2022-10-16 11:18:33,134 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:33,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488509664] [2022-10-16 11:18:33,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488509664] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:33,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:33,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:33,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861897312] [2022-10-16 11:18:33,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:33,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:33,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:33,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:33,137 INFO L87 Difference]: Start difference. First operand 83 states and 96 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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 11:18:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:33,182 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2022-10-16 11:18:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 11:18:33,183 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), 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 11:18:33,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:33,185 INFO L225 Difference]: With dead ends: 142 [2022-10-16 11:18:33,185 INFO L226 Difference]: Without dead ends: 141 [2022-10-16 11:18:33,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 11:18:33,187 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 53 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:33,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 235 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-10-16 11:18:33,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 91. [2022-10-16 11:18:33,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.5) internal successors, (96), 83 states have internal predecessors, (96), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:33,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2022-10-16 11:18:33,206 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 16 [2022-10-16 11:18:33,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:33,206 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2022-10-16 11:18:33,207 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), 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 11:18:33,208 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2022-10-16 11:18:33,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-16 11:18:33,209 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:33,209 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:33,245 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 11:18:33,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:33,411 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1753968460, now seen corresponding path program 1 times [2022-10-16 11:18:33,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:33,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178232810] [2022-10-16 11:18:33,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:33,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:33,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:33,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359258663] [2022-10-16 11:18:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:33,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:33,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:33,454 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 11:18:33,459 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 11:18:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:33,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 11:18:33,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:33,539 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 11:18:33,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:33,594 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 11:18:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:33,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178232810] [2022-10-16 11:18:33,595 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:33,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359258663] [2022-10-16 11:18:33,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359258663] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:33,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:33,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 11:18:33,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796557016] [2022-10-16 11:18:33,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:33,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 11:18:33,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 11:18:33,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-10-16 11:18:33,598 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 11:18:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:33,759 INFO L93 Difference]: Finished difference Result 296 states and 355 transitions. [2022-10-16 11:18:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:18:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 11:18:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:33,763 INFO L225 Difference]: With dead ends: 296 [2022-10-16 11:18:33,763 INFO L226 Difference]: Without dead ends: 295 [2022-10-16 11:18:33,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-16 11:18:33,765 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 206 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:33,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 770 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:33,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-10-16 11:18:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 115. [2022-10-16 11:18:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 107 states have internal predecessors, (126), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-10-16 11:18:33,785 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 16 [2022-10-16 11:18:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:33,785 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-10-16 11:18:33,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 11:18:33,786 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-10-16 11:18:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-16 11:18:33,787 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:33,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:33,820 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 11:18:34,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:34,003 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:34,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:34,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1461604154, now seen corresponding path program 1 times [2022-10-16 11:18:34,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:34,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238598286] [2022-10-16 11:18:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:34,020 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:34,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319550325] [2022-10-16 11:18:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:34,024 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 11:18:34,042 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 11:18:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:34,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:34,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-16 11:18:34,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:34,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:34,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238598286] [2022-10-16 11:18:34,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:34,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319550325] [2022-10-16 11:18:34,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319550325] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:34,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:34,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:34,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593567127] [2022-10-16 11:18:34,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:34,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:34,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:34,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:34,116 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 11:18:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:34,150 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2022-10-16 11:18:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:18:34,151 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), 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 17 [2022-10-16 11:18:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:34,152 INFO L225 Difference]: With dead ends: 130 [2022-10-16 11:18:34,152 INFO L226 Difference]: Without dead ends: 129 [2022-10-16 11:18:34,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 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 11:18:34,154 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 52 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:34,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 184 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-16 11:18:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 114. [2022-10-16 11:18:34,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 106 states have internal predecessors, (125), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:34,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2022-10-16 11:18:34,166 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 17 [2022-10-16 11:18:34,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:34,166 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2022-10-16 11:18:34,167 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), 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 11:18:34,167 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2022-10-16 11:18:34,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 11:18:34,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:34,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:34,204 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 11:18:34,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:34,385 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:34,386 INFO L85 PathProgramCache]: Analyzing trace with hash 975422656, now seen corresponding path program 1 times [2022-10-16 11:18:34,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:34,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871888541] [2022-10-16 11:18:34,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:34,408 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533223741] [2022-10-16 11:18:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:34,410 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 11:18:34,414 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 11:18:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:34,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:18:34,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:34,506 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 11:18:34,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:34,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:34,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871888541] [2022-10-16 11:18:34,507 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:34,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533223741] [2022-10-16 11:18:34,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533223741] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:34,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:34,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:18:34,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47553812] [2022-10-16 11:18:34,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:18:34,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:34,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:18:34,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:34,510 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 11:18:34,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:34,560 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2022-10-16 11:18:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:18:34,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2022-10-16 11:18:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:34,562 INFO L225 Difference]: With dead ends: 114 [2022-10-16 11:18:34,562 INFO L226 Difference]: Without dead ends: 111 [2022-10-16 11:18:34,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:34,564 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:34,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 55 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-16 11:18:34,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-10-16 11:18:34,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.3863636363636365) internal successors, (122), 103 states have internal predecessors, (122), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 132 transitions. [2022-10-16 11:18:34,577 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 132 transitions. Word has length 24 [2022-10-16 11:18:34,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:34,577 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 132 transitions. [2022-10-16 11:18:34,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 11:18:34,578 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 132 transitions. [2022-10-16 11:18:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 11:18:34,585 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:34,585 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 11:18:34,627 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 11:18:34,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-16 11:18:34,801 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:34,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:34,803 INFO L85 PathProgramCache]: Analyzing trace with hash 193672462, now seen corresponding path program 1 times [2022-10-16 11:18:34,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:34,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635336343] [2022-10-16 11:18:34,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:34,815 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:34,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724582917] [2022-10-16 11:18:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:34,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:34,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:34,817 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 11:18:34,825 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 11:18:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:34,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:18:34,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:18:34,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:35,063 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 11:18:35,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:35,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635336343] [2022-10-16 11:18:35,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:35,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724582917] [2022-10-16 11:18:35,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724582917] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:35,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:35,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-10-16 11:18:35,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715784997] [2022-10-16 11:18:35,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:35,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:18:35,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:18:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:18:35,067 INFO L87 Difference]: Start difference. First operand 111 states and 132 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 11:18:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:35,673 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2022-10-16 11:18:35,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:18:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 21 [2022-10-16 11:18:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:35,676 INFO L225 Difference]: With dead ends: 304 [2022-10-16 11:18:35,676 INFO L226 Difference]: Without dead ends: 219 [2022-10-16 11:18:35,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:18:35,678 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 318 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:35,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 703 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-16 11:18:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-10-16 11:18:35,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 115. [2022-10-16 11:18:35,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 92 states have (on average 1.3695652173913044) internal successors, (126), 107 states have internal predecessors, (126), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-10-16 11:18:35,690 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 21 [2022-10-16 11:18:35,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:35,691 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-10-16 11:18:35,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 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 11:18:35,691 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-10-16 11:18:35,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:18:35,692 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:35,692 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:35,725 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 11:18:35,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:35,906 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:35,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 173331303, now seen corresponding path program 1 times [2022-10-16 11:18:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:35,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856404582] [2022-10-16 11:18:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:35,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:35,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107741394] [2022-10-16 11:18:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:35,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:35,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:35,920 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 11:18:35,935 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 11:18:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:18:35,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 11:18:36,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:36,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856404582] [2022-10-16 11:18:36,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:36,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107741394] [2022-10-16 11:18:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107741394] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:36,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:36,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:18:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199754129] [2022-10-16 11:18:36,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:36,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:18:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:36,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:18:36,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:36,010 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 11:18:36,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:36,056 INFO L93 Difference]: Finished difference Result 115 states and 136 transitions. [2022-10-16 11:18:36,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:18:36,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2022-10-16 11:18:36,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:36,058 INFO L225 Difference]: With dead ends: 115 [2022-10-16 11:18:36,058 INFO L226 Difference]: Without dead ends: 112 [2022-10-16 11:18:36,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:36,059 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:36,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 55 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:36,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-16 11:18:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-10-16 11:18:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 104 states have internal predecessors, (123), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:36,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2022-10-16 11:18:36,072 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 25 [2022-10-16 11:18:36,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:36,073 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2022-10-16 11:18:36,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-16 11:18:36,073 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2022-10-16 11:18:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-16 11:18:36,074 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:36,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:36,108 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 11:18:36,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 11:18:36,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:36,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:36,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1261419922, now seen corresponding path program 2 times [2022-10-16 11:18:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:36,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124692948] [2022-10-16 11:18:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:36,300 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:36,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1328392106] [2022-10-16 11:18:36,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:18:36,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:36,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:36,302 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 11:18:36,305 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 11:18:36,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:18:36,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:18:36,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:18:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:36,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:18:36,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-16 11:18:36,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124692948] [2022-10-16 11:18:36,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:36,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328392106] [2022-10-16 11:18:36,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328392106] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:36,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:36,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 11:18:36,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153139732] [2022-10-16 11:18:36,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:36,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 11:18:36,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:36,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 11:18:36,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:18:36,438 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:18:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:36,602 INFO L93 Difference]: Finished difference Result 140 states and 168 transitions. [2022-10-16 11:18:36,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:18:36,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2022-10-16 11:18:36,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:36,604 INFO L225 Difference]: With dead ends: 140 [2022-10-16 11:18:36,604 INFO L226 Difference]: Without dead ends: 139 [2022-10-16 11:18:36,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-16 11:18:36,605 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 229 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:36,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 204 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-16 11:18:36,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 95. [2022-10-16 11:18:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 87 states have internal predecessors, (102), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:36,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 112 transitions. [2022-10-16 11:18:36,617 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 112 transitions. Word has length 25 [2022-10-16 11:18:36,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:36,618 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 112 transitions. [2022-10-16 11:18:36,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-16 11:18:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 112 transitions. [2022-10-16 11:18:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 11:18:36,619 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:36,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:36,654 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 11:18:36,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 11:18:36,834 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:36,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:36,835 INFO L85 PathProgramCache]: Analyzing trace with hash 75695992, now seen corresponding path program 1 times [2022-10-16 11:18:36,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:36,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830209950] [2022-10-16 11:18:36,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:36,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:36,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018842699] [2022-10-16 11:18:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:36,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:36,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:36,849 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 11:18:36,854 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 11:18:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:18:36,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:18:36,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:36,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830209950] [2022-10-16 11:18:36,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:36,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018842699] [2022-10-16 11:18:36,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018842699] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:36,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:36,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 11:18:36,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643112807] [2022-10-16 11:18:36,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:36,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 11:18:36,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:36,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 11:18:36,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 11:18:36,945 INFO L87 Difference]: Start difference. First operand 95 states and 112 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:37,070 INFO L93 Difference]: Finished difference Result 189 states and 217 transitions. [2022-10-16 11:18:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 11:18:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-10-16 11:18:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:37,072 INFO L225 Difference]: With dead ends: 189 [2022-10-16 11:18:37,072 INFO L226 Difference]: Without dead ends: 132 [2022-10-16 11:18:37,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 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 11:18:37,073 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 127 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:37,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 175 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:37,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-10-16 11:18:37,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 99. [2022-10-16 11:18:37,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 79 states have (on average 1.3164556962025316) internal successors, (104), 90 states have internal predecessors, (104), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:37,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-10-16 11:18:37,087 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 29 [2022-10-16 11:18:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:37,087 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-10-16 11:18:37,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-10-16 11:18:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 11:18:37,088 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:37,088 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:37,127 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 11:18:37,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 11:18:37,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:37,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:37,304 INFO L85 PathProgramCache]: Analyzing trace with hash -593660864, now seen corresponding path program 2 times [2022-10-16 11:18:37,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:37,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831881160] [2022-10-16 11:18:37,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:37,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:37,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:37,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072411929] [2022-10-16 11:18:37,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:18:37,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:37,318 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 11:18:37,336 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 11:18:37,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 11:18:37,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:18:37,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:18:37,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:37,431 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 11:18:37,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:37,479 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 11:18:37,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:37,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831881160] [2022-10-16 11:18:37,480 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:37,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072411929] [2022-10-16 11:18:37,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072411929] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:37,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:37,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-10-16 11:18:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426702596] [2022-10-16 11:18:37,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:37,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-16 11:18:37,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:37,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-16 11:18:37,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-16 11:18:37,482 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 11:18:37,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:37,672 INFO L93 Difference]: Finished difference Result 139 states and 163 transitions. [2022-10-16 11:18:37,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 11:18:37,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 28 [2022-10-16 11:18:37,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:37,674 INFO L225 Difference]: With dead ends: 139 [2022-10-16 11:18:37,674 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 11:18:37,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-10-16 11:18:37,675 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 209 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:37,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 270 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:37,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 11:18:37,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 83. [2022-10-16 11:18:37,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:37,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 94 transitions. [2022-10-16 11:18:37,688 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 94 transitions. Word has length 28 [2022-10-16 11:18:37,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:37,688 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 94 transitions. [2022-10-16 11:18:37,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 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 11:18:37,689 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 94 transitions. [2022-10-16 11:18:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-16 11:18:37,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:37,690 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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 11:18:37,727 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 11:18:37,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 11:18:37,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:37,905 INFO L85 PathProgramCache]: Analyzing trace with hash -2143645640, now seen corresponding path program 1 times [2022-10-16 11:18:37,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:37,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781526115] [2022-10-16 11:18:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:37,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:37,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:37,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [701664252] [2022-10-16 11:18:37,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:37,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:37,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:37,919 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 11:18:37,947 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 11:18:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 11:18:37,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:18:38,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-10-16 11:18:38,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:38,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781526115] [2022-10-16 11:18:38,148 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701664252] [2022-10-16 11:18:38,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701664252] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:38,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:38,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-10-16 11:18:38,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995689661] [2022-10-16 11:18:38,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:38,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-16 11:18:38,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-16 11:18:38,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-10-16 11:18:38,151 INFO L87 Difference]: Start difference. First operand 83 states and 94 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 11:18:38,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:38,369 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2022-10-16 11:18:38,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-16 11:18:38,370 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 38 [2022-10-16 11:18:38,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:38,371 INFO L225 Difference]: With dead ends: 166 [2022-10-16 11:18:38,371 INFO L226 Difference]: Without dead ends: 97 [2022-10-16 11:18:38,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-10-16 11:18:38,372 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 200 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:38,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 279 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:18:38,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-10-16 11:18:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 78. [2022-10-16 11:18:38,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 59 states have (on average 1.3220338983050848) internal successors, (78), 69 states have internal predecessors, (78), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:38,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 88 transitions. [2022-10-16 11:18:38,383 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 88 transitions. Word has length 38 [2022-10-16 11:18:38,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:38,384 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 88 transitions. [2022-10-16 11:18:38,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 13 states have internal predecessors, (43), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-10-16 11:18:38,384 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 88 transitions. [2022-10-16 11:18:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-16 11:18:38,385 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:38,385 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:38,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 11:18:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:38,598 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash -663773132, now seen corresponding path program 2 times [2022-10-16 11:18:38,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923982228] [2022-10-16 11:18:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:38,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:38,613 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:38,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981770324] [2022-10-16 11:18:38,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 11:18:38,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:38,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:38,614 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 11:18:38,621 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 11:18:38,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 11:18:38,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:18:38,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 11:18:38,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-16 11:18:38,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 11:18:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923982228] [2022-10-16 11:18:38,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:38,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981770324] [2022-10-16 11:18:38,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981770324] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:38,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:38,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-10-16 11:18:38,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053915911] [2022-10-16 11:18:38,854 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:38,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-16 11:18:38,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:38,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-16 11:18:38,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-10-16 11:18:38,856 INFO L87 Difference]: Start difference. First operand 78 states and 88 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 11:18:39,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:39,156 INFO L93 Difference]: Finished difference Result 185 states and 207 transitions. [2022-10-16 11:18:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 11:18:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 42 [2022-10-16 11:18:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:39,158 INFO L225 Difference]: With dead ends: 185 [2022-10-16 11:18:39,158 INFO L226 Difference]: Without dead ends: 129 [2022-10-16 11:18:39,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-10-16 11:18:39,160 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 127 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:39,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 477 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 11:18:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-10-16 11:18:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 91. [2022-10-16 11:18:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 82 states have internal predecessors, (92), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 102 transitions. [2022-10-16 11:18:39,173 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 102 transitions. Word has length 42 [2022-10-16 11:18:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 102 transitions. [2022-10-16 11:18:39,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-10-16 11:18:39,174 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 102 transitions. [2022-10-16 11:18:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 11:18:39,174 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:39,174 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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 11:18:39,209 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 11:18:39,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 11:18:39,388 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:39,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:39,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1385830648, now seen corresponding path program 3 times [2022-10-16 11:18:39,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:39,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849051725] [2022-10-16 11:18:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:39,405 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:39,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975795655] [2022-10-16 11:18:39,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 11:18:39,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:39,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:39,406 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 11:18:39,412 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 11:18:39,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-16 11:18:39,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 11:18:39,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:39,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 11:18:39,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849051725] [2022-10-16 11:18:39,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:39,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975795655] [2022-10-16 11:18:39,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975795655] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:39,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:39,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 11:18:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823418024] [2022-10-16 11:18:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:39,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:18:39,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:39,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:18:39,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:39,527 INFO L87 Difference]: Start difference. First operand 91 states and 102 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:39,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:39,542 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2022-10-16 11:18:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:18:39,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2022-10-16 11:18:39,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:39,544 INFO L225 Difference]: With dead ends: 91 [2022-10-16 11:18:39,544 INFO L226 Difference]: Without dead ends: 90 [2022-10-16 11:18:39,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:39,545 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 40 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:39,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 92 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:39,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-10-16 11:18:39,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2022-10-16 11:18:39,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 81 states have internal predecessors, (91), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:39,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 101 transitions. [2022-10-16 11:18:39,558 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 101 transitions. Word has length 55 [2022-10-16 11:18:39,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:39,558 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 101 transitions. [2022-10-16 11:18:39,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 101 transitions. [2022-10-16 11:18:39,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-16 11:18:39,559 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:39,559 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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 11:18:39,595 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 11:18:39,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 11:18:39,775 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:39,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:39,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2061012598, now seen corresponding path program 1 times [2022-10-16 11:18:39,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:39,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83184716] [2022-10-16 11:18:39,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:39,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:39,791 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:39,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843306089] [2022-10-16 11:18:39,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:39,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:39,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:39,793 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 11:18:39,825 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 11:18:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:39,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 11:18:39,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 11:18:39,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:39,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:39,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83184716] [2022-10-16 11:18:39,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:39,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843306089] [2022-10-16 11:18:39,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843306089] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:39,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:39,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:39,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105682943] [2022-10-16 11:18:39,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:39,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:39,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:39,973 INFO L87 Difference]: Start difference. First operand 90 states and 101 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:40,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:40,030 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2022-10-16 11:18:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:18:40,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-10-16 11:18:40,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:40,032 INFO L225 Difference]: With dead ends: 91 [2022-10-16 11:18:40,032 INFO L226 Difference]: Without dead ends: 89 [2022-10-16 11:18:40,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 55 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 11:18:40,033 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 84 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:40,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 64 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:40,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-10-16 11:18:40,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2022-10-16 11:18:40,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 79 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:40,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2022-10-16 11:18:40,046 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 58 [2022-10-16 11:18:40,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:40,047 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2022-10-16 11:18:40,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-16 11:18:40,047 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2022-10-16 11:18:40,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-10-16 11:18:40,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:40,048 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 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 11:18:40,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 11:18:40,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 11:18:40,262 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash -533118788, now seen corresponding path program 1 times [2022-10-16 11:18:40,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:40,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563609045] [2022-10-16 11:18:40,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:40,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:40,277 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:40,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [323633868] [2022-10-16 11:18:40,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:40,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:40,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:40,278 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 11:18:40,286 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 11:18:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:40,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 11:18:40,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-10-16 11:18:40,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 11:18:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-16 11:18:40,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:40,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563609045] [2022-10-16 11:18:40,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:40,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323633868] [2022-10-16 11:18:40,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323633868] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 11:18:40,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 11:18:40,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-10-16 11:18:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22777367] [2022-10-16 11:18:40,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 11:18:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 11:18:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 11:18:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-10-16 11:18:40,573 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 11:18:40,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:40,771 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2022-10-16 11:18:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 11:18:40,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2022-10-16 11:18:40,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:40,773 INFO L225 Difference]: With dead ends: 98 [2022-10-16 11:18:40,773 INFO L226 Difference]: Without dead ends: 96 [2022-10-16 11:18:40,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-10-16 11:18:40,774 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 290 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:40,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 156 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 11:18:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-10-16 11:18:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2022-10-16 11:18:40,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 77 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-16 11:18:40,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 97 transitions. [2022-10-16 11:18:40,786 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 97 transitions. Word has length 59 [2022-10-16 11:18:40,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:40,787 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 97 transitions. [2022-10-16 11:18:40,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 12 states have internal predecessors, (65), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-10-16 11:18:40,787 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 97 transitions. [2022-10-16 11:18:40,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 11:18:40,788 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:40,788 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:40,823 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 11:18:41,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-10-16 11:18:41,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:41,003 INFO L85 PathProgramCache]: Analyzing trace with hash -286627960, now seen corresponding path program 1 times [2022-10-16 11:18:41,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:41,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775346031] [2022-10-16 11:18:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:41,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:41,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [909704183] [2022-10-16 11:18:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:41,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:41,020 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 11:18:41,032 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 11:18:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:41,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-16 11:18:41,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-10-16 11:18:41,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:41,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:41,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775346031] [2022-10-16 11:18:41,117 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:41,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909704183] [2022-10-16 11:18:41,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909704183] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:41,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:41,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 11:18:41,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185317124] [2022-10-16 11:18:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 11:18:41,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 11:18:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:41,120 INFO L87 Difference]: Start difference. First operand 86 states and 97 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 11:18:41,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:41,147 INFO L93 Difference]: Finished difference Result 144 states and 165 transitions. [2022-10-16 11:18:41,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 11:18:41,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-10-16 11:18:41,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:41,150 INFO L225 Difference]: With dead ends: 144 [2022-10-16 11:18:41,150 INFO L226 Difference]: Without dead ends: 93 [2022-10-16 11:18:41,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 11:18:41,152 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:41,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 208 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:41,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-16 11:18:41,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2022-10-16 11:18:41,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 75 states have (on average 1.2) internal successors, (90), 80 states have internal predecessors, (90), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-10-16 11:18:41,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2022-10-16 11:18:41,166 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 73 [2022-10-16 11:18:41,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:41,167 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2022-10-16 11:18:41,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 11:18:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2022-10-16 11:18:41,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-10-16 11:18:41,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:41,169 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:41,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-16 11:18:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:41,383 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:41,384 INFO L85 PathProgramCache]: Analyzing trace with hash -353634713, now seen corresponding path program 1 times [2022-10-16 11:18:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:41,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031284326] [2022-10-16 11:18:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:41,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:41,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174662762] [2022-10-16 11:18:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:41,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:41,401 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 11:18:41,408 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 11:18:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:41,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-16 11:18:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-10-16 11:18:41,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 11:18:41,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 11:18:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031284326] [2022-10-16 11:18:41,494 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 11:18:41,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174662762] [2022-10-16 11:18:41,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174662762] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 11:18:41,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 11:18:41,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 11:18:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827853797] [2022-10-16 11:18:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 11:18:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 11:18:41,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 11:18:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 11:18:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:41,496 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 11:18:41,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 11:18:41,512 INFO L93 Difference]: Finished difference Result 146 states and 170 transitions. [2022-10-16 11:18:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 11:18:41,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 73 [2022-10-16 11:18:41,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 11:18:41,514 INFO L225 Difference]: With dead ends: 146 [2022-10-16 11:18:41,514 INFO L226 Difference]: Without dead ends: 91 [2022-10-16 11:18:41,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 11:18:41,515 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 11:18:41,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 11:18:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-10-16 11:18:41,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-10-16 11:18:41,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 81 states have internal predecessors, (91), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-10-16 11:18:41,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2022-10-16 11:18:41,528 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 73 [2022-10-16 11:18:41,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 11:18:41,528 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2022-10-16 11:18:41,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-10-16 11:18:41,529 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2022-10-16 11:18:41,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-10-16 11:18:41,529 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 11:18:41,529 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 11:18:41,567 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 11:18:41,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:41,743 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [outerBoundaryPatternCheckErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, outerBoundaryPatternCheckErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2022-10-16 11:18:41,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 11:18:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash -660464500, now seen corresponding path program 1 times [2022-10-16 11:18:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 11:18:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611191061] [2022-10-16 11:18:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 11:18:41,761 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 11:18:41,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099572434] [2022-10-16 11:18:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 11:18:41,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 11:18:41,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 11:18:41,763 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 11:18:41,772 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 11:18:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 11:18:42,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 41 conjunts are in the unsatisfiable core [2022-10-16 11:18:42,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 11:18:42,151 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 56 [2022-10-16 11:18:42,174 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 19 treesize of output 18 [2022-10-16 11:18:42,183 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 21 treesize of output 20 [2022-10-16 11:18:42,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 41 [2022-10-16 11:18:42,310 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 40 [2022-10-16 11:18:42,463 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 68 [2022-10-16 11:18:42,546 INFO L356 Elim1Store]: treesize reduction 152, result has 14.1 percent of original size [2022-10-16 11:18:42,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 150 [2022-10-16 11:18:42,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:18:42,589 INFO L173 IndexEqualityManager]: detected equality via solver [2022-10-16 11:18:42,602 INFO L356 Elim1Store]: treesize reduction 246, result has 0.4 percent of original size [2022-10-16 11:18:42,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 92 treesize of output 12 [2022-10-16 11:18:49,886 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:18:51,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 278 [2022-10-16 11:18:52,134 INFO L356 Elim1Store]: treesize reduction 264, result has 46.2 percent of original size [2022-10-16 11:18:52,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 468 treesize of output 709 [2022-10-16 11:18:55,501 INFO L356 Elim1Store]: treesize reduction 348, result has 0.3 percent of original size [2022-10-16 11:18:55,502 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 120 treesize of output 26 [2022-10-16 11:19:01,335 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 68 [2022-10-16 11:19:01,468 INFO L356 Elim1Store]: treesize reduction 90, result has 49.2 percent of original size [2022-10-16 11:19:01,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 212 [2022-10-16 11:19:01,548 INFO L356 Elim1Store]: treesize reduction 288, result has 11.4 percent of original size [2022-10-16 11:19:01,549 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 151 treesize of output 94 [2022-10-16 11:19:25,738 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 87 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 11:19:31,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 326 [2022-10-16 11:20:44,072 WARN L233 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 187 DAG size of output: 86 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-10-16 11:20:44,074 INFO L356 Elim1Store]: treesize reduction 1098, result has 25.4 percent of original size [2022-10-16 11:20:44,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 22 case distinctions, treesize of input 329 treesize of output 1227