./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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/HarrisLalNoriRajamani-SAS2010-Fig1.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 de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 08:13:46,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 08:13:46,309 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 08:13:46,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 08:13:46,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 08:13:46,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 08:13:46,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 08:13:46,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 08:13:46,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 08:13:46,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 08:13:46,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 08:13:46,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 08:13:46,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 08:13:46,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 08:13:46,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 08:13:46,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 08:13:46,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 08:13:46,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 08:13:46,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 08:13:46,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 08:13:46,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 08:13:46,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 08:13:46,343 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 08:13:46,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 08:13:46,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 08:13:46,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 08:13:46,347 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 08:13:46,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 08:13:46,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 08:13:46,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 08:13:46,348 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 08:13:46,349 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 08:13:46,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 08:13:46,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 08:13:46,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 08:13:46,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 08:13:46,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 08:13:46,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 08:13:46,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 08:13:46,352 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 08:13:46,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 08:13:46,353 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 08:13:46,367 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 08:13:46,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 08:13:46,368 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 08:13:46,368 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 08:13:46,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 08:13:46,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 08:13:46,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 08:13:46,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 08:13:46,369 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 08:13:46,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 08:13:46,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 08:13:46,370 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 08:13:46,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 08:13:46,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 08:13:46,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 08:13:46,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 08:13:46,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:13:46,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 08:13:46,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 08:13:46,372 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 08:13:46,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2023-02-18 08:13:46,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 08:13:46,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 08:13:46,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 08:13:46,569 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 08:13:46,570 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 08:13:46,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-18 08:13:47,609 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 08:13:47,759 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 08:13:47,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-18 08:13:47,764 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb762eaf/183e43ae79504a87821d8301a69cda45/FLAGc85ea562b [2023-02-18 08:13:47,778 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bb762eaf/183e43ae79504a87821d8301a69cda45 [2023-02-18 08:13:47,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 08:13:47,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 08:13:47,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 08:13:47,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 08:13:47,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 08:13:47,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9a771e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47, skipping insertion in model container [2023-02-18 08:13:47,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 08:13:47,799 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 08:13:47,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:13:47,884 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 08:13:47,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 08:13:47,899 INFO L208 MainTranslator]: Completed translation [2023-02-18 08:13:47,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47 WrapperNode [2023-02-18 08:13:47,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 08:13:47,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 08:13:47,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 08:13:47,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 08:13:47,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,917 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-18 08:13:47,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 08:13:47,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 08:13:47,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 08:13:47,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 08:13:47,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,931 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 08:13:47,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 08:13:47,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 08:13:47,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 08:13:47,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (1/1) ... [2023-02-18 08:13:47,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 08:13:47,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:47,972 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) [2023-02-18 08:13:47,981 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 [2023-02-18 08:13:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-18 08:13:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-18 08:13:47,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 08:13:47,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 08:13:48,032 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 08:13:48,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 08:13:48,175 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 08:13:48,180 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 08:13:48,180 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 08:13:48,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:13:48 BoogieIcfgContainer [2023-02-18 08:13:48,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 08:13:48,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 08:13:48,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 08:13:48,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 08:13:48,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 08:13:47" (1/3) ... [2023-02-18 08:13:48,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7bb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:13:48, skipping insertion in model container [2023-02-18 08:13:48,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 08:13:47" (2/3) ... [2023-02-18 08:13:48,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7bb7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 08:13:48, skipping insertion in model container [2023-02-18 08:13:48,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 08:13:48" (3/3) ... [2023-02-18 08:13:48,192 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-18 08:13:48,203 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 08:13:48,216 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-18 08:13:48,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 08:13:48,273 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;@48358907, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 08:13:48,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-18 08:13:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 08:13:48,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 08:13:48,283 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,284 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 996822992, now seen corresponding path program 1 times [2023-02-18 08:13:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942651098] [2023-02-18 08:13:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942651098] [2023-02-18 08:13:48,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942651098] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:13:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994650522] [2023-02-18 08:13:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:13:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:13:48,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:13:48,458 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,491 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2023-02-18 08:13:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:13:48,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 08:13:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,498 INFO L225 Difference]: With dead ends: 64 [2023-02-18 08:13:48,498 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 08:13:48,500 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 [2023-02-18 08:13:48,502 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 08:13:48,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-02-18 08:13:48,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-18 08:13:48,527 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 8 [2023-02-18 08:13:48,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,527 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-18 08:13:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-18 08:13:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 08:13:48,528 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 08:13:48,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,529 INFO L85 PathProgramCache]: Analyzing trace with hash 836741727, now seen corresponding path program 1 times [2023-02-18 08:13:48,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504343448] [2023-02-18 08:13:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504343448] [2023-02-18 08:13:48,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504343448] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:13:48,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208593175] [2023-02-18 08:13:48,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:13:48,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:13:48,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:13:48,556 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,592 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-02-18 08:13:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:13:48,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 08:13:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,593 INFO L225 Difference]: With dead ends: 56 [2023-02-18 08:13:48,594 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 08:13:48,594 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 [2023-02-18 08:13:48,595 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 08:13:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-18 08:13:48,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2023-02-18 08:13:48,601 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 9 [2023-02-18 08:13:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2023-02-18 08:13:48,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2023-02-18 08:13:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:13:48,602 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 08:13:48,603 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash 169143521, now seen corresponding path program 1 times [2023-02-18 08:13:48,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454499530] [2023-02-18 08:13:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454499530] [2023-02-18 08:13:48,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454499530] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:13:48,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863603641] [2023-02-18 08:13:48,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:48,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:48,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:13:48,643 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,680 INFO L93 Difference]: Finished difference Result 95 states and 134 transitions. [2023-02-18 08:13:48,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:13:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 08:13:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,682 INFO L225 Difference]: With dead ends: 95 [2023-02-18 08:13:48,682 INFO L226 Difference]: Without dead ends: 94 [2023-02-18 08:13:48,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:48,683 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 82 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-18 08:13:48,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2023-02-18 08:13:48,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.620253164556962) internal successors, (128), 85 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 130 transitions. [2023-02-18 08:13:48,693 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 130 transitions. Word has length 10 [2023-02-18 08:13:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,694 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 130 transitions. [2023-02-18 08:13:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,694 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 130 transitions. [2023-02-18 08:13:48,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:13:48,695 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 08:13:48,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,696 INFO L85 PathProgramCache]: Analyzing trace with hash 169143170, now seen corresponding path program 1 times [2023-02-18 08:13:48,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655673671] [2023-02-18 08:13:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655673671] [2023-02-18 08:13:48,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655673671] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:13:48,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285621321] [2023-02-18 08:13:48,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:48,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:48,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:13:48,729 INFO L87 Difference]: Start difference. First operand 88 states and 130 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,759 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions. [2023-02-18 08:13:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:13:48,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 08:13:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,761 INFO L225 Difference]: With dead ends: 98 [2023-02-18 08:13:48,761 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 08:13:48,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:48,762 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 83 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 08:13:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-02-18 08:13:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 85 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2023-02-18 08:13:48,770 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 10 [2023-02-18 08:13:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2023-02-18 08:13:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2023-02-18 08:13:48,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:13:48,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 08:13:48,772 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1417352704, now seen corresponding path program 1 times [2023-02-18 08:13:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833492965] [2023-02-18 08:13:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833492965] [2023-02-18 08:13:48,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833492965] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:13:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116585813] [2023-02-18 08:13:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:13:48,802 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,820 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2023-02-18 08:13:48,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:13:48,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 08:13:48,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,821 INFO L225 Difference]: With dead ends: 88 [2023-02-18 08:13:48,821 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 08:13:48,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:48,822 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 08:13:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-18 08:13:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.518987341772152) internal successors, (120), 84 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2023-02-18 08:13:48,829 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 10 [2023-02-18 08:13:48,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,829 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2023-02-18 08:13:48,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,830 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2023-02-18 08:13:48,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 08:13:48,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 08:13:48,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1417353055, now seen corresponding path program 1 times [2023-02-18 08:13:48,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844349865] [2023-02-18 08:13:48,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844349865] [2023-02-18 08:13:48,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844349865] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 08:13:48,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692707305] [2023-02-18 08:13:48,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:48,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:48,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 08:13:48,893 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,910 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2023-02-18 08:13:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:13:48,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 08:13:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,911 INFO L225 Difference]: With dead ends: 95 [2023-02-18 08:13:48,911 INFO L226 Difference]: Without dead ends: 94 [2023-02-18 08:13:48,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:48,913 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-18 08:13:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 48. [2023-02-18 08:13:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 46 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-02-18 08:13:48,918 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 10 [2023-02-18 08:13:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,918 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-02-18 08:13:48,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-02-18 08:13:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 08:13:48,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 08:13:48,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,920 INFO L85 PathProgramCache]: Analyzing trace with hash 948481931, now seen corresponding path program 1 times [2023-02-18 08:13:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487957966] [2023-02-18 08:13:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487957966] [2023-02-18 08:13:48,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487957966] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:48,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:48,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 08:13:48,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311612290] [2023-02-18 08:13:48,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:13:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:48,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:13:48,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:13:48,947 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:48,964 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-18 08:13:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:13:48,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 08:13:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:48,966 INFO L225 Difference]: With dead ends: 62 [2023-02-18 08:13:48,966 INFO L226 Difference]: Without dead ends: 61 [2023-02-18 08:13:48,966 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 [2023-02-18 08:13:48,967 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:48,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-18 08:13:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-02-18 08:13:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 54 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-02-18 08:13:48,972 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 11 [2023-02-18 08:13:48,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:48,973 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-02-18 08:13:48,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:48,973 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-02-18 08:13:48,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 08:13:48,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:48,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:48,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 08:13:48,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:48,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:48,975 INFO L85 PathProgramCache]: Analyzing trace with hash 948471040, now seen corresponding path program 1 times [2023-02-18 08:13:48,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:48,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156909081] [2023-02-18 08:13:48,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:48,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:49,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156909081] [2023-02-18 08:13:49,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156909081] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:49,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:49,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 08:13:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747506467] [2023-02-18 08:13:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:49,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 08:13:49,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 08:13:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 08:13:49,010 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:49,035 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-02-18 08:13:49,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 08:13:49,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 08:13:49,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:49,037 INFO L225 Difference]: With dead ends: 58 [2023-02-18 08:13:49,037 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 08:13:49,037 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 [2023-02-18 08:13:49,038 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:49,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:49,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 08:13:49,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-02-18 08:13:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 54 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-02-18 08:13:49,049 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 11 [2023-02-18 08:13:49,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:49,050 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-02-18 08:13:49,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,050 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-02-18 08:13:49,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 08:13:49,051 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:49,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:49,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 08:13:49,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash -617354162, now seen corresponding path program 1 times [2023-02-18 08:13:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:49,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111350477] [2023-02-18 08:13:49,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:49,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111350477] [2023-02-18 08:13:49,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111350477] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:49,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473258678] [2023-02-18 08:13:49,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:49,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:49,103 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) [2023-02-18 08:13:49,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 08:13:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 08:13:49,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:49,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473258678] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:49,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:49,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-18 08:13:49,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823558351] [2023-02-18 08:13:49,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:49,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 08:13:49,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 08:13:49,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:13:49,166 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:49,206 INFO L93 Difference]: Finished difference Result 132 states and 168 transitions. [2023-02-18 08:13:49,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:13:49,206 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 08:13:49,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:49,207 INFO L225 Difference]: With dead ends: 132 [2023-02-18 08:13:49,207 INFO L226 Difference]: Without dead ends: 130 [2023-02-18 08:13:49,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:13:49,208 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:49,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 73 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-18 08:13:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 65. [2023-02-18 08:13:49,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 63 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2023-02-18 08:13:49,214 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 12 [2023-02-18 08:13:49,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:49,214 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2023-02-18 08:13:49,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2023-02-18 08:13:49,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 08:13:49,215 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:49,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:49,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:49,420 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1583048475, now seen corresponding path program 1 times [2023-02-18 08:13:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:49,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9816370] [2023-02-18 08:13:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9816370] [2023-02-18 08:13:49,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9816370] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:49,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406842223] [2023-02-18 08:13:49,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:49,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:49,460 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) [2023-02-18 08:13:49,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 08:13:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 08:13:49,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:49,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 08:13:49,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406842223] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:49,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 08:13:49,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-18 08:13:49,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564285676] [2023-02-18 08:13:49,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:49,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:49,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:49,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:49,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:49,527 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:49,549 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2023-02-18 08:13:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:13:49,549 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 08:13:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:49,550 INFO L225 Difference]: With dead ends: 82 [2023-02-18 08:13:49,550 INFO L226 Difference]: Without dead ends: 81 [2023-02-18 08:13:49,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-18 08:13:49,551 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:49,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 42 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:49,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-18 08:13:49,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 56. [2023-02-18 08:13:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.32) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-02-18 08:13:49,555 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 15 [2023-02-18 08:13:49,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:49,556 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-02-18 08:13:49,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,556 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-02-18 08:13:49,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 08:13:49,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:49,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:49,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:49,761 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,SelfDestructingSolverStorable9 [2023-02-18 08:13:49,761 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:49,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:49,762 INFO L85 PathProgramCache]: Analyzing trace with hash -951056633, now seen corresponding path program 1 times [2023-02-18 08:13:49,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:49,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652069307] [2023-02-18 08:13:49,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652069307] [2023-02-18 08:13:49,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652069307] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:49,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724909466] [2023-02-18 08:13:49,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:49,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:49,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:49,803 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) [2023-02-18 08:13:49,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 08:13:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:49,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 08:13:49,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:49,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:49,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 08:13:49,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724909466] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:49,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 08:13:49,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-18 08:13:49,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122976280] [2023-02-18 08:13:49,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:49,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 08:13:49,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:49,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 08:13:49,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:49,844 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:49,859 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-02-18 08:13:49,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:13:49,859 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 08:13:49,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:49,860 INFO L225 Difference]: With dead ends: 56 [2023-02-18 08:13:49,860 INFO L226 Difference]: Without dead ends: 55 [2023-02-18 08:13:49,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-18 08:13:49,861 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:49,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 38 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:49,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-18 08:13:49,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-18 08:13:49,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2023-02-18 08:13:49,864 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 17 [2023-02-18 08:13:49,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:49,865 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2023-02-18 08:13:49,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2023-02-18 08:13:49,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 08:13:49,865 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:49,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:49,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 08:13:50,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:50,070 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:50,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash 582015517, now seen corresponding path program 1 times [2023-02-18 08:13:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:50,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98076057] [2023-02-18 08:13:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:50,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:50,103 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:50,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98076057] [2023-02-18 08:13:50,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98076057] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:50,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903843314] [2023-02-18 08:13:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:50,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:50,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:50,105 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) [2023-02-18 08:13:50,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 08:13:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 08:13:50,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903843314] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:50,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:50,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-18 08:13:50,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606756256] [2023-02-18 08:13:50,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:50,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 08:13:50,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 08:13:50,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:13:50,162 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:50,182 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2023-02-18 08:13:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 08:13:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 08:13:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:50,183 INFO L225 Difference]: With dead ends: 104 [2023-02-18 08:13:50,183 INFO L226 Difference]: Without dead ends: 103 [2023-02-18 08:13:50,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:13:50,184 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:50,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-18 08:13:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-02-18 08:13:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 101 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-02-18 08:13:50,190 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-02-18 08:13:50,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:50,190 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-02-18 08:13:50,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,190 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-02-18 08:13:50,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 08:13:50,191 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:50,191 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:50,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:50,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:50,395 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1562312095, now seen corresponding path program 2 times [2023-02-18 08:13:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:50,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612113831] [2023-02-18 08:13:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:50,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 08:13:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612113831] [2023-02-18 08:13:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612113831] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938001991] [2023-02-18 08:13:50,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:13:50,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:50,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:50,415 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) [2023-02-18 08:13:50,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 08:13:50,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 08:13:50,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:50,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 08:13:50,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:50,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 08:13:50,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:50,450 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 08:13:50,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938001991] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:50,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:50,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-18 08:13:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083221434] [2023-02-18 08:13:50,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 08:13:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 08:13:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 08:13:50,451 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:50,472 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2023-02-18 08:13:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 08:13:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 08:13:50,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:50,473 INFO L225 Difference]: With dead ends: 142 [2023-02-18 08:13:50,473 INFO L226 Difference]: Without dead ends: 141 [2023-02-18 08:13:50,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 08:13:50,482 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:50,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:50,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-18 08:13:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2023-02-18 08:13:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 98 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2023-02-18 08:13:50,487 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 21 [2023-02-18 08:13:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:50,488 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2023-02-18 08:13:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2023-02-18 08:13:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 08:13:50,489 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:50,489 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:50,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:50,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 08:13:50,693 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1096745154, now seen corresponding path program 1 times [2023-02-18 08:13:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:50,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112886504] [2023-02-18 08:13:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:50,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:50,706 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 08:13:50,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:50,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112886504] [2023-02-18 08:13:50,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112886504] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 08:13:50,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 08:13:50,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 08:13:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596297452] [2023-02-18 08:13:50,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 08:13:50,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 08:13:50,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 08:13:50,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 08:13:50,707 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:50,734 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2023-02-18 08:13:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 08:13:50,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 08:13:50,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:50,735 INFO L225 Difference]: With dead ends: 100 [2023-02-18 08:13:50,735 INFO L226 Difference]: Without dead ends: 99 [2023-02-18 08:13:50,735 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 [2023-02-18 08:13:50,736 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:50,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-18 08:13:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 50. [2023-02-18 08:13:50,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-02-18 08:13:50,739 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2023-02-18 08:13:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:50,739 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-02-18 08:13:50,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-02-18 08:13:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 08:13:50,740 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:50,740 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 08:13:50,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:50,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:50,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551912, now seen corresponding path program 2 times [2023-02-18 08:13:50,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:50,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23605790] [2023-02-18 08:13:50,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:50,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:50,793 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23605790] [2023-02-18 08:13:50,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23605790] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:50,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289988841] [2023-02-18 08:13:50,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:13:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:50,802 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) [2023-02-18 08:13:50,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 08:13:50,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:13:50,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:50,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 08:13:50,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:50,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289988841] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:50,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:50,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-18 08:13:50,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265204002] [2023-02-18 08:13:50,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:50,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 08:13:50,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 08:13:50,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-18 08:13:50,888 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:50,919 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2023-02-18 08:13:50,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 08:13:50,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-18 08:13:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:50,921 INFO L225 Difference]: With dead ends: 99 [2023-02-18 08:13:50,921 INFO L226 Difference]: Without dead ends: 98 [2023-02-18 08:13:50,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-18 08:13:50,923 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:50,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-18 08:13:50,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-18 08:13:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 96 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-02-18 08:13:50,929 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 36 [2023-02-18 08:13:50,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:50,929 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-02-18 08:13:50,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:50,929 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-02-18 08:13:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-18 08:13:50,930 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:50,930 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:50,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:51,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 08:13:51,135 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:51,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:51,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1581473794, now seen corresponding path program 3 times [2023-02-18 08:13:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191605039] [2023-02-18 08:13:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:51,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:51,300 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:51,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:51,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191605039] [2023-02-18 08:13:51,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191605039] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:51,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699329631] [2023-02-18 08:13:51,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 08:13:51,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:51,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:51,301 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) [2023-02-18 08:13:51,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 08:13:51,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 08:13:51,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:51,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 08:13:51,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:51,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:51,530 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:51,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699329631] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:51,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:51,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-18 08:13:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748128693] [2023-02-18 08:13:51,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:51,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 08:13:51,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 08:13:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-18 08:13:51,532 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:51,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:51,594 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2023-02-18 08:13:51,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 08:13:51,595 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-02-18 08:13:51,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:51,595 INFO L225 Difference]: With dead ends: 195 [2023-02-18 08:13:51,595 INFO L226 Difference]: Without dead ends: 194 [2023-02-18 08:13:51,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-18 08:13:51,596 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 242 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:51,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 182 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 08:13:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-18 08:13:51,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-02-18 08:13:51,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 191 states have (on average 1.1361256544502618) internal successors, (217), 192 states have internal predecessors, (217), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:51,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2023-02-18 08:13:51,605 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 72 [2023-02-18 08:13:51,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:51,605 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2023-02-18 08:13:51,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:51,605 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2023-02-18 08:13:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-02-18 08:13:51,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:51,606 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:51,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:51,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:51,811 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -760026454, now seen corresponding path program 4 times [2023-02-18 08:13:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:51,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053504776] [2023-02-18 08:13:51,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:52,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053504776] [2023-02-18 08:13:52,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053504776] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:52,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647395548] [2023-02-18 08:13:52,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 08:13:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:52,215 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) [2023-02-18 08:13:52,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 08:13:52,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 08:13:52,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:52,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-18 08:13:52,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:52,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647395548] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:53,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:53,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-18 08:13:53,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968644072] [2023-02-18 08:13:53,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:53,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-18 08:13:53,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:53,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-18 08:13:53,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 08:13:53,355 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:53,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:53,620 INFO L93 Difference]: Finished difference Result 387 states and 459 transitions. [2023-02-18 08:13:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-18 08:13:53,620 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-02-18 08:13:53,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:53,622 INFO L225 Difference]: With dead ends: 387 [2023-02-18 08:13:53,622 INFO L226 Difference]: Without dead ends: 386 [2023-02-18 08:13:53,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 242 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 08:13:53,623 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 467 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:53,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 380 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:13:53,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-02-18 08:13:53,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-02-18 08:13:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 383 states have (on average 1.1305483028720626) internal successors, (433), 384 states have internal predecessors, (433), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 435 transitions. [2023-02-18 08:13:53,638 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 435 transitions. Word has length 144 [2023-02-18 08:13:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:53,638 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 435 transitions. [2023-02-18 08:13:53,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 435 transitions. [2023-02-18 08:13:53,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-02-18 08:13:53,640 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:53,641 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:53,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:53,845 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,SelfDestructingSolverStorable16 [2023-02-18 08:13:53,846 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:53,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:53,846 INFO L85 PathProgramCache]: Analyzing trace with hash -690283518, now seen corresponding path program 5 times [2023-02-18 08:13:53,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:53,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85261013] [2023-02-18 08:13:53,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:53,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:53,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:13:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:55,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:13:55,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85261013] [2023-02-18 08:13:55,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85261013] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:13:55,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474060456] [2023-02-18 08:13:55,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 08:13:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:13:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:13:55,564 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) [2023-02-18 08:13:55,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 08:13:55,706 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-18 08:13:55,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:13:55,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-18 08:13:55,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:13:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:56,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:13:58,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:13:58,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474060456] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:13:58,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:13:58,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-18 08:13:58,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363465882] [2023-02-18 08:13:58,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:13:58,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-18 08:13:58,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:13:58,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-18 08:13:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-18 08:13:58,588 INFO L87 Difference]: Start difference. First operand 386 states and 435 transitions. Second operand has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:59,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:13:59,472 INFO L93 Difference]: Finished difference Result 771 states and 915 transitions. [2023-02-18 08:13:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-18 08:13:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2023-02-18 08:13:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:13:59,475 INFO L225 Difference]: With dead ends: 771 [2023-02-18 08:13:59,475 INFO L226 Difference]: Without dead ends: 770 [2023-02-18 08:13:59,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 482 SyntacticMatches, 46 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-18 08:13:59,477 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1090 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 08:13:59,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 710 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 08:13:59,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-02-18 08:13:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2023-02-18 08:13:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 767 states have (on average 1.1277705345501956) internal successors, (865), 768 states have internal predecessors, (865), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:59,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 867 transitions. [2023-02-18 08:13:59,501 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 867 transitions. Word has length 288 [2023-02-18 08:13:59,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:13:59,502 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 867 transitions. [2023-02-18 08:13:59,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:13:59,502 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 867 transitions. [2023-02-18 08:13:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-02-18 08:13:59,516 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:13:59,516 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:13:59,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 08:13:59,722 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,SelfDestructingSolverStorable17 [2023-02-18 08:13:59,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:13:59,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:13:59,723 INFO L85 PathProgramCache]: Analyzing trace with hash -907415886, now seen corresponding path program 6 times [2023-02-18 08:13:59,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:13:59,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585691131] [2023-02-18 08:13:59,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:13:59,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:13:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:14:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:14:05,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:14:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585691131] [2023-02-18 08:14:05,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585691131] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:14:05,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080905602] [2023-02-18 08:14:05,465 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 08:14:05,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:14:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:14:05,466 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) [2023-02-18 08:14:05,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 08:14:05,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-18 08:14:05,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:14:05,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-18 08:14:05,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:14:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:14:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:14:15,088 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:14:15,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080905602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:14:15,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:14:15,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-18 08:14:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385306751] [2023-02-18 08:14:15,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:14:15,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-18 08:14:15,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:14:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-18 08:14:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-18 08:14:15,120 INFO L87 Difference]: Start difference. First operand 770 states and 867 transitions. Second operand has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:14:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:14:24,335 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2023-02-18 08:14:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-18 08:14:24,336 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2023-02-18 08:14:24,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:14:24,342 INFO L225 Difference]: With dead ends: 1539 [2023-02-18 08:14:24,342 INFO L226 Difference]: Without dead ends: 1538 [2023-02-18 08:14:24,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 962 SyntacticMatches, 94 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4373 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-18 08:14:24,345 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2329 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 08:14:24,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 1400 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 08:14:24,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-02-18 08:14:24,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2023-02-18 08:14:24,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1535 states have (on average 1.126384364820847) internal successors, (1729), 1536 states have internal predecessors, (1729), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:14:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1731 transitions. [2023-02-18 08:14:24,400 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1731 transitions. Word has length 576 [2023-02-18 08:14:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:14:24,403 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1731 transitions. [2023-02-18 08:14:24,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:14:24,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1731 transitions. [2023-02-18 08:14:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2023-02-18 08:14:24,431 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:14:24,432 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:14:24,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 08:14:24,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:14:24,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:14:24,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:14:24,639 INFO L85 PathProgramCache]: Analyzing trace with hash 159470610, now seen corresponding path program 7 times [2023-02-18 08:14:24,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:14:24,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452283774] [2023-02-18 08:14:24,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:14:24,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:14:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:14:46,255 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:14:46,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:14:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452283774] [2023-02-18 08:14:46,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452283774] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:14:46,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488364906] [2023-02-18 08:14:46,255 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 08:14:46,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:14:46,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:14:46,257 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) [2023-02-18 08:14:46,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 08:14:46,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:14:46,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-18 08:14:46,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:14:54,035 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:14:54,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:15:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:15:18,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488364906] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:15:18,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:15:18,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-18 08:15:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117367891] [2023-02-18 08:15:18,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:15:18,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-18 08:15:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:15:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-18 08:15:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-18 08:15:18,760 INFO L87 Difference]: Start difference. First operand 1538 states and 1731 transitions. Second operand has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:17:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 08:17:25,418 INFO L93 Difference]: Finished difference Result 3075 states and 3651 transitions. [2023-02-18 08:17:25,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-18 08:17:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1152 [2023-02-18 08:17:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 08:17:25,426 INFO L225 Difference]: With dead ends: 3075 [2023-02-18 08:17:25,426 INFO L226 Difference]: Without dead ends: 3074 [2023-02-18 08:17:25,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2494 GetRequests, 1922 SyntacticMatches, 190 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17957 ImplicationChecksByTransitivity, 39.4s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-18 08:17:25,431 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5522 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 08:17:25,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5522 Valid, 2726 Invalid, 783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 08:17:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-02-18 08:17:25,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2023-02-18 08:17:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3071 states have (on average 1.1256919570172583) internal successors, (3457), 3072 states have internal predecessors, (3457), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:17:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3459 transitions. [2023-02-18 08:17:25,518 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3459 transitions. Word has length 1152 [2023-02-18 08:17:25,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 08:17:25,519 INFO L495 AbstractCegarLoop]: Abstraction has 3074 states and 3459 transitions. [2023-02-18 08:17:25,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 08:17:25,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3459 transitions. [2023-02-18 08:17:25,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2023-02-18 08:17:25,550 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 08:17:25,551 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 08:17:25,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-18 08:17:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:17:25,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-18 08:17:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 08:17:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1654070994, now seen corresponding path program 8 times [2023-02-18 08:17:25,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 08:17:25,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547154096] [2023-02-18 08:17:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 08:17:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 08:17:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 08:19:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:19:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 08:19:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547154096] [2023-02-18 08:19:26,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547154096] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 08:19:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157938138] [2023-02-18 08:19:26,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 08:19:26,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 08:19:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 08:19:26,385 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) [2023-02-18 08:19:26,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 08:19:27,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 08:19:27,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 08:19:27,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 6536 conjuncts, 384 conjunts are in the unsatisfiable core [2023-02-18 08:19:27,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 08:19:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:19:56,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 08:21:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 438536 backedges. 0 proven. 438536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 08:21:28,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157938138] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 08:21:28,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 08:21:28,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [384, 384, 384] total 767 [2023-02-18 08:21:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901026947] [2023-02-18 08:21:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 08:21:28,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2023-02-18 08:21:28,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 08:21:28,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2023-02-18 08:21:28,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294528, Invalid=294528, Unknown=0, NotChecked=0, Total=589056 [2023-02-18 08:21:28,206 INFO L87 Difference]: Start difference. First operand 3074 states and 3459 transitions. Second operand has 768 states, 767 states have (on average 6.001303780964798) internal successors, (4603), 768 states have internal predecessors, (4603), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)