./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7e1ff0e6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 02:06:20,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 02:06:20,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 02:06:20,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 02:06:20,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 02:06:20,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 02:06:20,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 02:06:20,333 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 02:06:20,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 02:06:20,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 02:06:20,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 02:06:20,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 02:06:20,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 02:06:20,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 02:06:20,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 02:06:20,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 02:06:20,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 02:06:20,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 02:06:20,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 02:06:20,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 02:06:20,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 02:06:20,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 02:06:20,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 02:06:20,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 02:06:20,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 02:06:20,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 02:06:20,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 02:06:20,364 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 02:06:20,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 02:06:20,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 02:06:20,365 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 02:06:20,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 02:06:20,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 02:06:20,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 02:06:20,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 02:06:20,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 02:06:20,368 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 02:06:20,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 02:06:20,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 02:06:20,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 02:06:20,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 02:06:20,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 02:06:20,413 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 02:06:20,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 02:06:20,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 02:06:20,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 02:06:20,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 02:06:20,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 02:06:20,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 02:06:20,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 02:06:20,415 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 02:06:20,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 02:06:20,416 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 02:06:20,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 02:06:20,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:06:20,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 02:06:20,418 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 02:06:20,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 02:06:20,419 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 02:06:20,419 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2023-02-15 02:06:20,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 02:06:20,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 02:06:20,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 02:06:20,614 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 02:06:20,614 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 02:06:20,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-15 02:06:21,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 02:06:21,702 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 02:06:21,702 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-15 02:06:21,705 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78bbc4f3/ea7590aa6f924ca485116b9d40dc496d/FLAG24d60deee [2023-02-15 02:06:21,714 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78bbc4f3/ea7590aa6f924ca485116b9d40dc496d [2023-02-15 02:06:21,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 02:06:21,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 02:06:21,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 02:06:21,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 02:06:21,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 02:06:21,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c11340 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21, skipping insertion in model container [2023-02-15 02:06:21,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 02:06:21,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 02:06:21,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:06:21,849 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 02:06:21,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 02:06:21,870 INFO L208 MainTranslator]: Completed translation [2023-02-15 02:06:21,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21 WrapperNode [2023-02-15 02:06:21,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 02:06:21,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 02:06:21,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 02:06:21,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 02:06:21,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,889 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-15 02:06:21,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 02:06:21,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 02:06:21,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 02:06:21,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 02:06:21,895 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,898 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,905 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 02:06:21,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 02:06:21,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 02:06:21,910 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 02:06:21,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (1/1) ... [2023-02-15 02:06:21,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 02:06:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:21,934 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) [2023-02-15 02:06:21,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 02:06:21,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 02:06:21,952 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 [2023-02-15 02:06:22,011 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 02:06:22,012 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 02:06:22,132 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 02:06:22,136 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 02:06:22,137 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 02:06:22,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:06:22 BoogieIcfgContainer [2023-02-15 02:06:22,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 02:06:22,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 02:06:22,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 02:06:22,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 02:06:22,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 02:06:21" (1/3) ... [2023-02-15 02:06:22,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7088202a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:06:22, skipping insertion in model container [2023-02-15 02:06:22,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:06:21" (2/3) ... [2023-02-15 02:06:22,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7088202a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 02:06:22, skipping insertion in model container [2023-02-15 02:06:22,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:06:22" (3/3) ... [2023-02-15 02:06:22,146 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2023-02-15 02:06:22,161 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 02:06:22,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 02:06:22,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 02:06:22,225 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=PETRI_NET, 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;@27f0f32, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 02:06:22,226 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 02:06:22,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 02:06:22,233 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:22,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 02:06:22,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:22,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2023-02-15 02:06:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578495160] [2023-02-15 02:06:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:22,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578495160] [2023-02-15 02:06:22,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578495160] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:06:22,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:06:22,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 02:06:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715813529] [2023-02-15 02:06:22,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:06:22,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:06:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:06:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:06:22,451 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:22,528 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-02-15 02:06:22,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:06:22,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 02:06:22,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:22,536 INFO L225 Difference]: With dead ends: 35 [2023-02-15 02:06:22,536 INFO L226 Difference]: Without dead ends: 13 [2023-02-15 02:06:22,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:06:22,543 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:22,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 23 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:06:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-15 02:06:22,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-02-15 02:06:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2023-02-15 02:06:22,567 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2023-02-15 02:06:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:22,568 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2023-02-15 02:06:22,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2023-02-15 02:06:22,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 02:06:22,568 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:22,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 02:06:22,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 02:06:22,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:22,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2023-02-15 02:06:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:22,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926660121] [2023-02-15 02:06:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:22,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926660121] [2023-02-15 02:06:22,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926660121] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:06:22,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:06:22,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 02:06:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684823423] [2023-02-15 02:06:22,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:06:22,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:06:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:06:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:06:22,635 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:22,655 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-02-15 02:06:22,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:06:22,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 02:06:22,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:22,657 INFO L225 Difference]: With dead ends: 14 [2023-02-15 02:06:22,657 INFO L226 Difference]: Without dead ends: 13 [2023-02-15 02:06:22,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:06:22,658 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 15 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:22,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-02-15 02:06:22,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2023-02-15 02:06:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2023-02-15 02:06:22,661 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2023-02-15 02:06:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2023-02-15 02:06:22,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2023-02-15 02:06:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 02:06:22,662 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:22,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:06:22,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 02:06:22,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:22,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:22,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2023-02-15 02:06:22,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:22,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530232658] [2023-02-15 02:06:22,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:22,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:22,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530232658] [2023-02-15 02:06:22,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530232658] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:06:22,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:06:22,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 02:06:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691436526] [2023-02-15 02:06:22,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:06:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:06:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:06:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:06:22,693 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:22,712 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2023-02-15 02:06:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:06:22,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 02:06:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:22,713 INFO L225 Difference]: With dead ends: 15 [2023-02-15 02:06:22,713 INFO L226 Difference]: Without dead ends: 14 [2023-02-15 02:06:22,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:06:22,715 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:22,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:22,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-02-15 02:06:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-02-15 02:06:22,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-02-15 02:06:22,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2023-02-15 02:06:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:22,719 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-02-15 02:06:22,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-02-15 02:06:22,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 02:06:22,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:22,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:06:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 02:06:22,720 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:22,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash -770242199, now seen corresponding path program 1 times [2023-02-15 02:06:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:22,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055308720] [2023-02-15 02:06:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 02:06:22,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055308720] [2023-02-15 02:06:22,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055308720] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 02:06:22,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 02:06:22,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 02:06:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364152950] [2023-02-15 02:06:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 02:06:22,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 02:06:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:22,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 02:06:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:06:22,762 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:22,777 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2023-02-15 02:06:22,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 02:06:22,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 02:06:22,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:22,779 INFO L225 Difference]: With dead ends: 25 [2023-02-15 02:06:22,779 INFO L226 Difference]: Without dead ends: 24 [2023-02-15 02:06:22,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 02:06:22,780 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:22,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:22,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-15 02:06:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-15 02:06:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-02-15 02:06:22,786 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2023-02-15 02:06:22,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:22,786 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-02-15 02:06:22,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-02-15 02:06:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 02:06:22,787 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:22,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-15 02:06:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 02:06:22,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -770240501, now seen corresponding path program 1 times [2023-02-15 02:06:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:22,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742539544] [2023-02-15 02:06:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:22,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742539544] [2023-02-15 02:06:22,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742539544] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:22,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232976846] [2023-02-15 02:06:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:22,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:22,836 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) [2023-02-15 02:06:22,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 02:06:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:22,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 02:06:22,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:22,941 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 02:06:22,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232976846] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:22,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:22,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-02-15 02:06:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778985336] [2023-02-15 02:06:22,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 02:06:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:22,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 02:06:22,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-15 02:06:22,991 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:23,058 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-15 02:06:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 02:06:23,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 02:06:23,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:23,059 INFO L225 Difference]: With dead ends: 38 [2023-02-15 02:06:23,059 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 02:06:23,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-15 02:06:23,060 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 13 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:23,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 02:06:23,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2023-02-15 02:06:23,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2023-02-15 02:06:23,064 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2023-02-15 02:06:23,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:23,065 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2023-02-15 02:06:23,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2023-02-15 02:06:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:06:23,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:23,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-15 02:06:23,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:23,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:23,271 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash -249756767, now seen corresponding path program 1 times [2023-02-15 02:06:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161084444] [2023-02-15 02:06:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:06:23,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161084444] [2023-02-15 02:06:23,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161084444] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:23,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311770271] [2023-02-15 02:06:23,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:23,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:23,317 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) [2023-02-15 02:06:23,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 02:06:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 02:06:23,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:06:23,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 02:06:23,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311770271] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:23,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:23,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-15 02:06:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625404647] [2023-02-15 02:06:23,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:23,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 02:06:23,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 02:06:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:06:23,402 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:23,428 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2023-02-15 02:06:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 02:06:23,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 02:06:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:23,429 INFO L225 Difference]: With dead ends: 52 [2023-02-15 02:06:23,429 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 02:06:23,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-15 02:06:23,430 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:23,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 02:06:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2023-02-15 02:06:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2023-02-15 02:06:23,437 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 17 [2023-02-15 02:06:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2023-02-15 02:06:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2023-02-15 02:06:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 02:06:23,437 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:23,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:06:23,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-15 02:06:23,643 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -249755069, now seen corresponding path program 1 times [2023-02-15 02:06:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:23,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724676840] [2023-02-15 02:06:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:23,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 02:06:23,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:23,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724676840] [2023-02-15 02:06:23,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724676840] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:23,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958680833] [2023-02-15 02:06:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:23,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:23,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:23,713 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) [2023-02-15 02:06:23,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 02:06:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:23,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 02:06:23,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 02:06:23,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 02:06:23,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958680833] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:23,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:23,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-02-15 02:06:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515370792] [2023-02-15 02:06:23,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:23,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 02:06:23,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 02:06:23,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-15 02:06:23,872 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:24,176 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-15 02:06:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 02:06:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-15 02:06:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:24,178 INFO L225 Difference]: With dead ends: 70 [2023-02-15 02:06:24,179 INFO L226 Difference]: Without dead ends: 69 [2023-02-15 02:06:24,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=284, Invalid=838, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 02:06:24,181 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 54 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:24,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 17 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:06:24,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-15 02:06:24,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2023-02-15 02:06:24,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.2241379310344827) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:24,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-15 02:06:24,200 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 17 [2023-02-15 02:06:24,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:24,201 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-15 02:06:24,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:24,201 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-15 02:06:24,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 02:06:24,203 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:24,204 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 02:06:24,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:24,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:24,411 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash 461482147, now seen corresponding path program 2 times [2023-02-15 02:06:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:24,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731249282] [2023-02-15 02:06:24,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:24,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:24,474 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-15 02:06:24,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:24,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731249282] [2023-02-15 02:06:24,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731249282] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:24,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414197934] [2023-02-15 02:06:24,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:06:24,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:24,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:24,476 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) [2023-02-15 02:06:24,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 02:06:24,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:06:24,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:24,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 02:06:24,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 02:06:24,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:24,707 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 02:06:24,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414197934] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:24,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:24,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-02-15 02:06:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734612865] [2023-02-15 02:06:24,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-15 02:06:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-15 02:06:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-02-15 02:06:24,709 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:25,179 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2023-02-15 02:06:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 02:06:25,180 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 02:06:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:25,180 INFO L225 Difference]: With dead ends: 108 [2023-02-15 02:06:25,180 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 02:06:25,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2023-02-15 02:06:25,182 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 65 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:25,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 18 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:06:25,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 02:06:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 45. [2023-02-15 02:06:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.1395348837209303) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2023-02-15 02:06:25,187 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 23 [2023-02-15 02:06:25,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:25,187 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2023-02-15 02:06:25,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,188 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2023-02-15 02:06:25,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 02:06:25,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:25,188 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-15 02:06:25,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:25,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:25,392 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:25,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1026452329, now seen corresponding path program 2 times [2023-02-15 02:06:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429334142] [2023-02-15 02:06:25,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:25,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:25,443 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-15 02:06:25,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429334142] [2023-02-15 02:06:25,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429334142] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:25,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312990708] [2023-02-15 02:06:25,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:06:25,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:25,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:25,445 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) [2023-02-15 02:06:25,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 02:06:25,470 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-15 02:06:25,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:25,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 02:06:25,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-15 02:06:25,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:25,554 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-02-15 02:06:25,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312990708] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:25,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:25,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-02-15 02:06:25,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541046888] [2023-02-15 02:06:25,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:25,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 02:06:25,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:25,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 02:06:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 02:06:25,557 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:25,570 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2023-02-15 02:06:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 02:06:25,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 02:06:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:25,571 INFO L225 Difference]: With dead ends: 45 [2023-02-15 02:06:25,572 INFO L226 Difference]: Without dead ends: 44 [2023-02-15 02:06:25,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 02:06:25,573 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:25,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 02:06:25,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-15 02:06:25,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-02-15 02:06:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-02-15 02:06:25,589 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 38 [2023-02-15 02:06:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:25,590 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-02-15 02:06:25,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-02-15 02:06:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 02:06:25,592 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:25,592 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-15 02:06:25,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:25,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:25,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:25,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1026454027, now seen corresponding path program 3 times [2023-02-15 02:06:25,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:25,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343587334] [2023-02-15 02:06:25,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:25,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:25,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 02:06:25,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343587334] [2023-02-15 02:06:25,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343587334] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:25,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81401652] [2023-02-15 02:06:25,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:06:25,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:25,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:25,878 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) [2023-02-15 02:06:25,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 02:06:25,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-15 02:06:25,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:25,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 02:06:25,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 02:06:25,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 02:06:26,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81401652] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:26,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:26,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-02-15 02:06:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191404380] [2023-02-15 02:06:26,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:26,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 02:06:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 02:06:26,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-02-15 02:06:26,090 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:26,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:26,957 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2023-02-15 02:06:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-02-15 02:06:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2023-02-15 02:06:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:26,958 INFO L225 Difference]: With dead ends: 163 [2023-02-15 02:06:26,958 INFO L226 Difference]: Without dead ends: 162 [2023-02-15 02:06:26,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2535 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1705, Invalid=5101, Unknown=0, NotChecked=0, Total=6806 [2023-02-15 02:06:26,960 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 129 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:26,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 20 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 02:06:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-02-15 02:06:26,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 112. [2023-02-15 02:06:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 111 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2023-02-15 02:06:26,970 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 38 [2023-02-15 02:06:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:26,970 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2023-02-15 02:06:26,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2023-02-15 02:06:26,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-15 02:06:26,971 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:26,971 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-15 02:06:26,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:27,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:27,175 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:27,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:27,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1283988075, now seen corresponding path program 4 times [2023-02-15 02:06:27,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:27,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227098306] [2023-02-15 02:06:27,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:27,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 02:06:27,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:27,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227098306] [2023-02-15 02:06:27,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227098306] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:27,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128698692] [2023-02-15 02:06:27,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:06:27,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:27,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:27,297 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) [2023-02-15 02:06:27,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 02:06:27,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:06:27,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:27,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 02:06:27,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 92 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 02:06:27,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:27,638 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 65 proven. 74 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-15 02:06:27,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128698692] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:27,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:27,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 30 [2023-02-15 02:06:27,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100874106] [2023-02-15 02:06:27,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:27,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 02:06:27,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:27,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 02:06:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-02-15 02:06:27,642 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:28,443 INFO L93 Difference]: Finished difference Result 452 states and 533 transitions. [2023-02-15 02:06:28,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 02:06:28,443 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2023-02-15 02:06:28,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:28,446 INFO L225 Difference]: With dead ends: 452 [2023-02-15 02:06:28,446 INFO L226 Difference]: Without dead ends: 362 [2023-02-15 02:06:28,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=920, Invalid=3370, Unknown=0, NotChecked=0, Total=4290 [2023-02-15 02:06:28,449 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 110 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:28,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 18 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:06:28,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-02-15 02:06:28,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 318. [2023-02-15 02:06:28,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 1.1514195583596214) internal successors, (365), 317 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:28,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 365 transitions. [2023-02-15 02:06:28,486 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 365 transitions. Word has length 44 [2023-02-15 02:06:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:28,488 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 365 transitions. [2023-02-15 02:06:28,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:28,488 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 365 transitions. [2023-02-15 02:06:28,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 02:06:28,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:28,489 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-15 02:06:28,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:28,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:28,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:28,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1090922906, now seen corresponding path program 5 times [2023-02-15 02:06:28,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:28,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153649711] [2023-02-15 02:06:28,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:28,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 112 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 02:06:28,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:28,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153649711] [2023-02-15 02:06:28,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153649711] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:28,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542600653] [2023-02-15 02:06:28,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:06:28,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:28,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:28,807 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) [2023-02-15 02:06:28,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 02:06:28,866 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-15 02:06:28,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:28,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 02:06:28,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 71 proven. 93 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 02:06:29,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 51 proven. 113 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 02:06:29,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542600653] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:29,235 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:29,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 30 [2023-02-15 02:06:29,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748281253] [2023-02-15 02:06:29,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:29,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-15 02:06:29,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:29,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-15 02:06:29,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2023-02-15 02:06:29,237 INFO L87 Difference]: Start difference. First operand 318 states and 365 transitions. Second operand has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:30,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:30,030 INFO L93 Difference]: Finished difference Result 630 states and 718 transitions. [2023-02-15 02:06:30,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-15 02:06:30,030 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2023-02-15 02:06:30,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:30,031 INFO L225 Difference]: With dead ends: 630 [2023-02-15 02:06:30,032 INFO L226 Difference]: Without dead ends: 397 [2023-02-15 02:06:30,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=904, Invalid=3128, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 02:06:30,033 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 145 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:30,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 18 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 02:06:30,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-02-15 02:06:30,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 348. [2023-02-15 02:06:30,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.1469740634005763) internal successors, (398), 347 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:30,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 398 transitions. [2023-02-15 02:06:30,055 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 398 transitions. Word has length 47 [2023-02-15 02:06:30,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:30,055 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 398 transitions. [2023-02-15 02:06:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.1666666666666665) internal successors, (95), 30 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:30,056 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 398 transitions. [2023-02-15 02:06:30,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 02:06:30,056 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:30,056 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 5, 4, 4, 4, 1, 1, 1, 1] [2023-02-15 02:06:30,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 02:06:30,263 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:30,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash 277704857, now seen corresponding path program 6 times [2023-02-15 02:06:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:30,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936797684] [2023-02-15 02:06:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:30,401 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 56 proven. 140 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-15 02:06:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:30,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936797684] [2023-02-15 02:06:30,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936797684] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:30,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177768376] [2023-02-15 02:06:30,401 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:06:30,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:30,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:30,402 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) [2023-02-15 02:06:30,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 02:06:30,429 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-02-15 02:06:30,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:30,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-15 02:06:30,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 40 proven. 146 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 02:06:30,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 4 proven. 182 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 02:06:30,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177768376] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:30,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:30,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 35 [2023-02-15 02:06:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329119247] [2023-02-15 02:06:30,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:30,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-02-15 02:06:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-02-15 02:06:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1058, Unknown=0, NotChecked=0, Total=1190 [2023-02-15 02:06:30,818 INFO L87 Difference]: Start difference. First operand 348 states and 398 transitions. Second operand has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:34,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:34,938 INFO L93 Difference]: Finished difference Result 1606 states and 1979 transitions. [2023-02-15 02:06:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2023-02-15 02:06:34,938 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2023-02-15 02:06:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:34,942 INFO L225 Difference]: With dead ends: 1606 [2023-02-15 02:06:34,942 INFO L226 Difference]: Without dead ends: 1303 [2023-02-15 02:06:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10059 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4072, Invalid=23318, Unknown=0, NotChecked=0, Total=27390 [2023-02-15 02:06:34,948 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 928 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:34,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 22 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 02:06:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2023-02-15 02:06:34,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 390. [2023-02-15 02:06:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.1568123393316196) internal successors, (450), 389 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:34,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 450 transitions. [2023-02-15 02:06:34,991 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 450 transitions. Word has length 50 [2023-02-15 02:06:34,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:34,992 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 450 transitions. [2023-02-15 02:06:34,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.6285714285714286) internal successors, (127), 35 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:34,992 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 450 transitions. [2023-02-15 02:06:34,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-15 02:06:34,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:34,994 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2023-02-15 02:06:35,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 02:06:35,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 02:06:35,201 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:35,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:35,201 INFO L85 PathProgramCache]: Analyzing trace with hash -775133941, now seen corresponding path program 7 times [2023-02-15 02:06:35,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:35,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436166445] [2023-02-15 02:06:35,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:35,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:06:35,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:35,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436166445] [2023-02-15 02:06:35,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436166445] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:35,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626248378] [2023-02-15 02:06:35,398 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:06:35,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:35,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:35,399 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) [2023-02-15 02:06:35,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 02:06:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:35,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 02:06:35,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:35,524 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:06:35,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 498 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 02:06:35,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626248378] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:35,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:35,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2023-02-15 02:06:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45286969] [2023-02-15 02:06:35,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:35,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-15 02:06:35,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-15 02:06:35,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 02:06:35,784 INFO L87 Difference]: Start difference. First operand 390 states and 450 transitions. Second operand has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:38,964 INFO L93 Difference]: Finished difference Result 3709 states and 4402 transitions. [2023-02-15 02:06:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2023-02-15 02:06:38,965 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-02-15 02:06:38,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:38,973 INFO L225 Difference]: With dead ends: 3709 [2023-02-15 02:06:38,973 INFO L226 Difference]: Without dead ends: 3708 [2023-02-15 02:06:38,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14677 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=8320, Invalid=25720, Unknown=0, NotChecked=0, Total=34040 [2023-02-15 02:06:38,978 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 294 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:38,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 37 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 02:06:38,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2023-02-15 02:06:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 1060. [2023-02-15 02:06:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 1059 states have (on average 1.166194523135033) internal successors, (1235), 1059 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:39,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1235 transitions. [2023-02-15 02:06:39,113 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1235 transitions. Word has length 80 [2023-02-15 02:06:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:39,114 INFO L495 AbstractCegarLoop]: Abstraction has 1060 states and 1235 transitions. [2023-02-15 02:06:39,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.15625) internal successors, (165), 33 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1235 transitions. [2023-02-15 02:06:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-02-15 02:06:39,115 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:39,115 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 8, 7, 7, 7, 1, 1, 1, 1] [2023-02-15 02:06:39,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-15 02:06:39,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 02:06:39,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash 79148945, now seen corresponding path program 8 times [2023-02-15 02:06:39,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:39,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218890547] [2023-02-15 02:06:39,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:39,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 94 proven. 472 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-02-15 02:06:39,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:39,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218890547] [2023-02-15 02:06:39,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218890547] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:39,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944694794] [2023-02-15 02:06:39,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:06:39,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:39,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:39,559 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) [2023-02-15 02:06:39,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 02:06:39,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:06:39,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:39,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 02:06:39,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 571 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-15 02:06:39,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 1 proven. 570 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-02-15 02:06:40,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944694794] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:40,221 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:40,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 42 [2023-02-15 02:06:40,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104258553] [2023-02-15 02:06:40,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:40,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-02-15 02:06:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:40,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-02-15 02:06:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1521, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 02:06:40,227 INFO L87 Difference]: Start difference. First operand 1060 states and 1235 transitions. Second operand has 42 states, 42 states have (on average 4.309523809523809) internal successors, (181), 42 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:06:54,961 INFO L93 Difference]: Finished difference Result 3743 states and 4404 transitions. [2023-02-15 02:06:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 389 states. [2023-02-15 02:06:54,962 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 4.309523809523809) internal successors, (181), 42 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-02-15 02:06:54,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:06:54,975 INFO L225 Difference]: With dead ends: 3743 [2023-02-15 02:06:54,976 INFO L226 Difference]: Without dead ends: 3090 [2023-02-15 02:06:54,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 426 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83556 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=23146, Invalid=159610, Unknown=0, NotChecked=0, Total=182756 [2023-02-15 02:06:54,992 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1588 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 643 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 643 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 02:06:54,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 25 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [643 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 02:06:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-02-15 02:06:55,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 1842. [2023-02-15 02:06:55,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.1613253666485606) internal successors, (2138), 1841 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2138 transitions. [2023-02-15 02:06:55,345 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2138 transitions. Word has length 83 [2023-02-15 02:06:55,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:06:55,345 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2138 transitions. [2023-02-15 02:06:55,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 4.309523809523809) internal successors, (181), 42 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:06:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2138 transitions. [2023-02-15 02:06:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-02-15 02:06:55,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:06:55,347 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 12, 11, 11, 11, 1, 1, 1, 1] [2023-02-15 02:06:55,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-15 02:06:55,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 02:06:55,552 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:06:55,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:06:55,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1137935975, now seen corresponding path program 9 times [2023-02-15 02:06:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:06:55,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723891911] [2023-02-15 02:06:55,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:06:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:06:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:06:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 0 proven. 808 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 02:06:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:06:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723891911] [2023-02-15 02:06:55,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723891911] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:06:55,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222779023] [2023-02-15 02:06:55,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:06:55,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:06:55,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:06:55,764 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) [2023-02-15 02:06:55,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 02:06:55,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2023-02-15 02:06:55,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:06:55,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 02:06:55,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:06:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 424 proven. 184 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-02-15 02:06:55,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:06:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 826 backedges. 424 proven. 184 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2023-02-15 02:06:56,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222779023] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:06:56,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:06:56,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 12] total 40 [2023-02-15 02:06:56,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045410101] [2023-02-15 02:06:56,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:06:56,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-15 02:06:56,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:06:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-15 02:06:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=1364, Unknown=0, NotChecked=0, Total=1640 [2023-02-15 02:06:56,347 INFO L87 Difference]: Start difference. First operand 1842 states and 2138 transitions. Second operand has 41 states, 40 states have (on average 4.425) internal successors, (177), 41 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:07:14,822 INFO L93 Difference]: Finished difference Result 8599 states and 10343 transitions. [2023-02-15 02:07:14,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 410 states. [2023-02-15 02:07:14,823 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.425) internal successors, (177), 41 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-02-15 02:07:14,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:07:14,841 INFO L225 Difference]: With dead ends: 8599 [2023-02-15 02:07:14,841 INFO L226 Difference]: Without dead ends: 8598 [2023-02-15 02:07:14,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 443 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95326 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=36359, Invalid=161221, Unknown=0, NotChecked=0, Total=197580 [2023-02-15 02:07:14,853 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2283 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 983 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2283 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 1968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 983 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 02:07:14,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2283 Valid, 19 Invalid, 1968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [983 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 02:07:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8598 states. [2023-02-15 02:07:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8598 to 2124. [2023-02-15 02:07:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2124 states, 2123 states have (on average 1.1662741403674046) internal successors, (2476), 2123 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2124 states to 2124 states and 2476 transitions. [2023-02-15 02:07:15,280 INFO L78 Accepts]: Start accepts. Automaton has 2124 states and 2476 transitions. Word has length 99 [2023-02-15 02:07:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:07:15,280 INFO L495 AbstractCegarLoop]: Abstraction has 2124 states and 2476 transitions. [2023-02-15 02:07:15,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.425) internal successors, (177), 41 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2124 states and 2476 transitions. [2023-02-15 02:07:15,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-02-15 02:07:15,282 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:07:15,282 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2023-02-15 02:07:15,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 02:07:15,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 02:07:15,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:07:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:07:15,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1772549365, now seen corresponding path program 10 times [2023-02-15 02:07:15,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:07:15,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154034297] [2023-02-15 02:07:15,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:07:15,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:07:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:07:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 02:07:15,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:07:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154034297] [2023-02-15 02:07:15,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154034297] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:07:15,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117715313] [2023-02-15 02:07:15,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 02:07:15,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:07:15,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:07:15,918 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) [2023-02-15 02:07:15,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 02:07:15,966 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 02:07:15,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:07:15,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 02:07:15,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:07:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 02:07:16,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:07:16,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2302 backedges. 0 proven. 2280 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 02:07:16,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117715313] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:07:16,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:07:16,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2023-02-15 02:07:16,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718973711] [2023-02-15 02:07:16,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:07:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-02-15 02:07:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:07:16,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-02-15 02:07:16,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2023-02-15 02:07:16,917 INFO L87 Difference]: Start difference. First operand 2124 states and 2476 transitions. Second operand has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:31,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:07:31,991 INFO L93 Difference]: Finished difference Result 23797 states and 28618 transitions. [2023-02-15 02:07:31,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 382 states. [2023-02-15 02:07:31,992 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2023-02-15 02:07:31,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:07:32,040 INFO L225 Difference]: With dead ends: 23797 [2023-02-15 02:07:32,040 INFO L226 Difference]: Without dead ends: 23796 [2023-02-15 02:07:32,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68965 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=36346, Invalid=114586, Unknown=0, NotChecked=0, Total=150932 [2023-02-15 02:07:32,051 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 560 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 02:07:32,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 59 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 02:07:32,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23796 states. [2023-02-15 02:07:33,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23796 to 7611. [2023-02-15 02:07:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7611 states, 7610 states have (on average 1.1756898817345598) internal successors, (8947), 7610 states have internal predecessors, (8947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7611 states to 7611 states and 8947 transitions. [2023-02-15 02:07:33,098 INFO L78 Accepts]: Start accepts. Automaton has 7611 states and 8947 transitions. Word has length 164 [2023-02-15 02:07:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:07:33,099 INFO L495 AbstractCegarLoop]: Abstraction has 7611 states and 8947 transitions. [2023-02-15 02:07:33,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.946428571428571) internal successors, (333), 57 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 7611 states and 8947 transitions. [2023-02-15 02:07:33,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-02-15 02:07:33,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:07:33,103 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 34, 21, 20, 20, 20, 1, 1, 1, 1] [2023-02-15 02:07:33,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 02:07:33,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 02:07:33,308 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:07:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:07:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1775672476, now seen corresponding path program 11 times [2023-02-15 02:07:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:07:33,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908087015] [2023-02-15 02:07:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:07:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:07:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:07:33,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 0 proven. 2617 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-02-15 02:07:33,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:07:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908087015] [2023-02-15 02:07:33,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908087015] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:07:33,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671651795] [2023-02-15 02:07:33,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 02:07:33,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:07:33,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:07:33,621 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) [2023-02-15 02:07:33,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 02:07:33,678 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2023-02-15 02:07:33,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:07:33,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 02:07:33,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:07:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 1548 proven. 1577 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 02:07:34,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:07:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3265 backedges. 1472 proven. 1653 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-02-15 02:07:34,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671651795] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:07:34,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:07:34,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 27] total 64 [2023-02-15 02:07:34,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998811019] [2023-02-15 02:07:34,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:07:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-02-15 02:07:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:07:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-02-15 02:07:34,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=3565, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 02:07:34,892 INFO L87 Difference]: Start difference. First operand 7611 states and 8947 transitions. Second operand has 64 states, 64 states have (on average 5.234375) internal successors, (335), 64 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:07:47,828 INFO L93 Difference]: Finished difference Result 17487 states and 20591 transitions. [2023-02-15 02:07:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2023-02-15 02:07:47,828 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 5.234375) internal successors, (335), 64 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 189 [2023-02-15 02:07:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:07:47,843 INFO L225 Difference]: With dead ends: 17487 [2023-02-15 02:07:47,843 INFO L226 Difference]: Without dead ends: 10706 [2023-02-15 02:07:47,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 705 GetRequests, 332 SyntacticMatches, 8 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51333 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=14736, Invalid=119586, Unknown=0, NotChecked=0, Total=134322 [2023-02-15 02:07:47,855 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1788 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 4168 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 4168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 02:07:47,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1788 Valid, 31 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 4168 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 02:07:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10706 states. [2023-02-15 02:07:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10706 to 5189. [2023-02-15 02:07:48,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5189 states, 5188 states have (on average 1.138781804163454) internal successors, (5908), 5188 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 5908 transitions. [2023-02-15 02:07:48,915 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 5908 transitions. Word has length 189 [2023-02-15 02:07:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:07:48,916 INFO L495 AbstractCegarLoop]: Abstraction has 5189 states and 5908 transitions. [2023-02-15 02:07:48,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 5.234375) internal successors, (335), 64 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:07:48,916 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 5908 transitions. [2023-02-15 02:07:48,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2023-02-15 02:07:48,921 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:07:48,921 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 24, 23, 23, 23, 1, 1, 1, 1] [2023-02-15 02:07:48,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 02:07:49,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:07:49,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:07:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:07:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash 740961934, now seen corresponding path program 12 times [2023-02-15 02:07:49,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:07:49,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078316311] [2023-02-15 02:07:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:07:49,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:07:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:07:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 0 proven. 2885 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-02-15 02:07:49,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:07:49,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078316311] [2023-02-15 02:07:49,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078316311] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:07:49,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860445623] [2023-02-15 02:07:49,486 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 02:07:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:07:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:07:49,489 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) [2023-02-15 02:07:49,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 02:07:49,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2023-02-15 02:07:49,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:07:49,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 02:07:49,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:07:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 198 proven. 2687 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-02-15 02:07:49,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:07:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3753 backedges. 28 proven. 2857 refuted. 0 times theorem prover too weak. 868 trivial. 0 not checked. [2023-02-15 02:07:50,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860445623] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:07:50,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:07:50,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 46 [2023-02-15 02:07:50,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478696060] [2023-02-15 02:07:50,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:07:50,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-02-15 02:07:50,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:07:50,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-02-15 02:07:50,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=535, Invalid=1627, Unknown=0, NotChecked=0, Total=2162 [2023-02-15 02:07:50,304 INFO L87 Difference]: Start difference. First operand 5189 states and 5908 transitions. Second operand has 47 states, 46 states have (on average 5.326086956521739) internal successors, (245), 47 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:09,810 INFO L93 Difference]: Finished difference Result 19572 states and 23282 transitions. [2023-02-15 02:08:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 518 states. [2023-02-15 02:08:09,811 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 5.326086956521739) internal successors, (245), 47 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2023-02-15 02:08:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:09,837 INFO L225 Difference]: With dead ends: 19572 [2023-02-15 02:08:09,837 INFO L226 Difference]: Without dead ends: 19571 [2023-02-15 02:08:09,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 552 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159061 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=59365, Invalid=246997, Unknown=0, NotChecked=0, Total=306362 [2023-02-15 02:08:09,853 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 862 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 1798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:09,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 22 Invalid, 1798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 02:08:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19571 states. [2023-02-15 02:08:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19571 to 4385. [2023-02-15 02:08:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4385 states, 4384 states have (on average 1.1430200729927007) internal successors, (5011), 4384 states have internal predecessors, (5011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4385 states to 4385 states and 5011 transitions. [2023-02-15 02:08:11,679 INFO L78 Accepts]: Start accepts. Automaton has 4385 states and 5011 transitions. Word has length 204 [2023-02-15 02:08:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:11,680 INFO L495 AbstractCegarLoop]: Abstraction has 4385 states and 5011 transitions. [2023-02-15 02:08:11,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 5.326086956521739) internal successors, (245), 47 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4385 states and 5011 transitions. [2023-02-15 02:08:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2023-02-15 02:08:11,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:11,684 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 45, 29, 28, 28, 28, 1, 1, 1, 1] [2023-02-15 02:08:11,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-15 02:08:11,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:11,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:08:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:11,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1471427025, now seen corresponding path program 13 times [2023-02-15 02:08:11,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:11,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267547307] [2023-02-15 02:08:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:11,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 0 proven. 4713 refuted. 0 times theorem prover too weak. 1220 trivial. 0 not checked. [2023-02-15 02:08:12,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267547307] [2023-02-15 02:08:12,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267547307] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031624145] [2023-02-15 02:08:12,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 02:08:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:12,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:12,357 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) [2023-02-15 02:08:12,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 02:08:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:12,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 02:08:12,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:13,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 2434 proven. 3339 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-02-15 02:08:13,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5933 backedges. 2311 proven. 3462 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-02-15 02:08:14,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031624145] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:14,365 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:14,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 35, 35] total 82 [2023-02-15 02:08:14,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730664950] [2023-02-15 02:08:14,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:14,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2023-02-15 02:08:14,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2023-02-15 02:08:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=5768, Unknown=0, NotChecked=0, Total=6642 [2023-02-15 02:08:14,368 INFO L87 Difference]: Start difference. First operand 4385 states and 5011 transitions. Second operand has 82 states, 82 states have (on average 5.695121951219512) internal successors, (467), 82 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:34,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:08:34,896 INFO L93 Difference]: Finished difference Result 8897 states and 10115 transitions. [2023-02-15 02:08:34,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 433 states. [2023-02-15 02:08:34,897 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 5.695121951219512) internal successors, (467), 82 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 254 [2023-02-15 02:08:34,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:08:34,904 INFO L225 Difference]: With dead ends: 8897 [2023-02-15 02:08:34,904 INFO L226 Difference]: Without dead ends: 7351 [2023-02-15 02:08:34,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 960 GetRequests, 441 SyntacticMatches, 11 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101137 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=23910, Invalid=235680, Unknown=0, NotChecked=0, Total=259590 [2023-02-15 02:08:34,918 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1836 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5950 mSolverCounterSat, 798 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 6748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 798 IncrementalHoareTripleChecker+Valid, 5950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-15 02:08:34,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1836 Valid, 26 Invalid, 6748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [798 Valid, 5950 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-15 02:08:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7351 states. [2023-02-15 02:08:37,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7351 to 5267. [2023-02-15 02:08:37,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5267 states, 5266 states have (on average 1.130079756931257) internal successors, (5951), 5266 states have internal predecessors, (5951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5267 states to 5267 states and 5951 transitions. [2023-02-15 02:08:37,647 INFO L78 Accepts]: Start accepts. Automaton has 5267 states and 5951 transitions. Word has length 254 [2023-02-15 02:08:37,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:08:37,656 INFO L495 AbstractCegarLoop]: Abstraction has 5267 states and 5951 transitions. [2023-02-15 02:08:37,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 5.695121951219512) internal successors, (467), 82 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:08:37,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5267 states and 5951 transitions. [2023-02-15 02:08:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2023-02-15 02:08:37,663 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:08:37,663 INFO L195 NwaCegarLoop]: trace histogram [48, 48, 47, 29, 28, 28, 28, 1, 1, 1, 1] [2023-02-15 02:08:37,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 02:08:37,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:37,868 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:08:37,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:08:37,869 INFO L85 PathProgramCache]: Analyzing trace with hash 422662423, now seen corresponding path program 14 times [2023-02-15 02:08:37,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:08:37,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058462754] [2023-02-15 02:08:37,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:08:37,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:08:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:08:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 1325 proven. 92 refuted. 0 times theorem prover too weak. 4851 trivial. 0 not checked. [2023-02-15 02:08:38,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:08:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058462754] [2023-02-15 02:08:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058462754] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:08:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049994234] [2023-02-15 02:08:38,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 02:08:38,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:08:38,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:08:38,090 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) [2023-02-15 02:08:38,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 02:08:38,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 02:08:38,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:08:38,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-15 02:08:38,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:08:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 2342 proven. 3737 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-02-15 02:08:39,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:08:39,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6268 backedges. 2235 proven. 3844 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-02-15 02:08:39,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049994234] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:08:39,879 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:08:39,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 35, 35] total 67 [2023-02-15 02:08:39,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150277357] [2023-02-15 02:08:39,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:08:39,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-15 02:08:39,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:08:39,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-15 02:08:39,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=3784, Unknown=0, NotChecked=0, Total=4422 [2023-02-15 02:08:39,882 INFO L87 Difference]: Start difference. First operand 5267 states and 5951 transitions. Second operand has 67 states, 67 states have (on average 5.149253731343284) internal successors, (345), 67 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 02:09:12,419 INFO L93 Difference]: Finished difference Result 11316 states and 12876 transitions. [2023-02-15 02:09:12,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 684 states. [2023-02-15 02:09:12,419 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 5.149253731343284) internal successors, (345), 67 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 260 [2023-02-15 02:09:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 02:09:12,427 INFO L225 Difference]: With dead ends: 11316 [2023-02-15 02:09:12,427 INFO L226 Difference]: Without dead ends: 8543 [2023-02-15 02:09:12,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1212 GetRequests, 464 SyntacticMatches, 13 SemanticMatches, 735 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240662 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=73754, Invalid=468678, Unknown=0, NotChecked=0, Total=542432 [2023-02-15 02:09:12,456 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 653 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5268 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 5565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 5268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-15 02:09:12,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 29 Invalid, 5565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 5268 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-15 02:09:12,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8543 states. [2023-02-15 02:09:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8543 to 6589. [2023-02-15 02:09:16,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6589 states, 6588 states have (on average 1.137370977534912) internal successors, (7493), 6588 states have internal predecessors, (7493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6589 states to 6589 states and 7493 transitions. [2023-02-15 02:09:16,860 INFO L78 Accepts]: Start accepts. Automaton has 6589 states and 7493 transitions. Word has length 260 [2023-02-15 02:09:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 02:09:16,860 INFO L495 AbstractCegarLoop]: Abstraction has 6589 states and 7493 transitions. [2023-02-15 02:09:16,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 5.149253731343284) internal successors, (345), 67 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 02:09:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6589 states and 7493 transitions. [2023-02-15 02:09:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2023-02-15 02:09:16,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 02:09:16,870 INFO L195 NwaCegarLoop]: trace histogram [57, 57, 56, 32, 31, 31, 31, 1, 1, 1, 1] [2023-02-15 02:09:16,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-15 02:09:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:17,075 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2023-02-15 02:09:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 02:09:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1424195539, now seen corresponding path program 15 times [2023-02-15 02:09:17,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 02:09:17,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88063182] [2023-02-15 02:09:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 02:09:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 02:09:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 02:09:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 0 proven. 5652 refuted. 0 times theorem prover too weak. 2794 trivial. 0 not checked. [2023-02-15 02:09:17,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 02:09:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88063182] [2023-02-15 02:09:17,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88063182] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 02:09:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641546234] [2023-02-15 02:09:17,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 02:09:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 02:09:17,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 02:09:17,557 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) [2023-02-15 02:09:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 02:09:17,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-02-15 02:09:17,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 02:09:17,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-15 02:09:17,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 02:09:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 2292 proven. 204 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2023-02-15 02:09:18,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 02:09:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8446 backedges. 2292 proven. 204 refuted. 0 times theorem prover too weak. 5950 trivial. 0 not checked. [2023-02-15 02:09:18,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641546234] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 02:09:18,413 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 02:09:18,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 14] total 51 [2023-02-15 02:09:18,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582399772] [2023-02-15 02:09:18,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 02:09:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 02:09:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 02:09:18,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 02:09:18,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=2297, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 02:09:18,416 INFO L87 Difference]: Start difference. First operand 6589 states and 7493 transitions. Second operand has 52 states, 51 states have (on average 4.235294117647059) internal successors, (216), 52 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)