./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 574ddb4e 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-?-574ddb4 [2023-02-17 09:24:15,352 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:24:15,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:24:15,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:24:15,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:24:15,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:24:15,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:24:15,399 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:24:15,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:24:15,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:24:15,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:24:15,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:24:15,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:24:15,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:24:15,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:24:15,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:24:15,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:24:15,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:24:15,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:24:15,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:24:15,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:24:15,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:24:15,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:24:15,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:24:15,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:24:15,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:24:15,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:24:15,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:24:15,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:24:15,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:24:15,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:24:15,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:24:15,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:24:15,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:24:15,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:24:15,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:24:15,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:24:15,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:24:15,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:24:15,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:24:15,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:24:15,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:24:15,487 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:24:15,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:24:15,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:24:15,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:24:15,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:24:15,489 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:24:15,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:24:15,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:24:15,490 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:24:15,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:24:15,491 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:24:15,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:24:15,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:24:15,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:24:15,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:24:15,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:24:15,492 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:24:15,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:24:15,492 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:24:15,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:24:15,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:15,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:24:15,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:24:15,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:24:15,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:24:15,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:24:15,494 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:24:15,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:24:15,495 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:24:15,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2023-02-17 09:24:15,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:24:15,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:24:15,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:24:15,735 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:24:15,735 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:24:15,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-17 09:24:16,937 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:24:17,081 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:24:17,082 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-17 09:24:17,087 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d5b250a/0cfd901f83cc475da9bfe1ff6e931247/FLAG54663876a [2023-02-17 09:24:17,482 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00d5b250a/0cfd901f83cc475da9bfe1ff6e931247 [2023-02-17 09:24:17,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:24:17,485 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:24:17,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:17,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:24:17,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:24:17,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da77dd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17, skipping insertion in model container [2023-02-17 09:24:17,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:24:17,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:24:17,619 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:17,623 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:24:17,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:17,645 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:24:17,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17 WrapperNode [2023-02-17 09:24:17,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:17,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:17,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:24:17,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:24:17,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,667 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-17 09:24:17,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:17,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:24:17,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:24:17,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:24:17,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,679 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,694 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:24:17,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:24:17,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:24:17,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:24:17,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (1/1) ... [2023-02-17 09:24:17,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:17,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:17,725 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) [2023-02-17 09:24:17,727 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 [2023-02-17 09:24:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-17 09:24:17,757 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-17 09:24:17,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:24:17,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:24:17,806 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:24:17,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:24:17,911 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:24:17,918 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:24:17,918 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:24:17,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:17 BoogieIcfgContainer [2023-02-17 09:24:17,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:24:17,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:24:17,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:24:17,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:24:17,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:24:17" (1/3) ... [2023-02-17 09:24:17,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a7f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:17, skipping insertion in model container [2023-02-17 09:24:17,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:17" (2/3) ... [2023-02-17 09:24:17,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a7f935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:17, skipping insertion in model container [2023-02-17 09:24:17,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:17" (3/3) ... [2023-02-17 09:24:17,935 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-17 09:24:17,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:24:17,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-17 09:24:17,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:24:17,997 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;@1b649a6f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:24:17,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-17 09:24:18,000 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) [2023-02-17 09:24:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:18,006 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 996822992, now seen corresponding path program 1 times [2023-02-17 09:24:18,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210875323] [2023-02-17 09:24:18,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210875323] [2023-02-17 09:24:18,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210875323] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778802071] [2023-02-17 09:24:18,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:18,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:18,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:18,241 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) [2023-02-17 09:24:18,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:18,327 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2023-02-17 09:24:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:18,330 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 [2023-02-17 09:24:18,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:18,336 INFO L225 Difference]: With dead ends: 64 [2023-02-17 09:24:18,336 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 09:24:18,338 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 [2023-02-17 09:24:18,341 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:18,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:18,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 09:24:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-02-17 09:24:18,384 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) [2023-02-17 09:24:18,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-17 09:24:18,386 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 8 [2023-02-17 09:24:18,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:18,386 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-17 09:24:18,386 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) [2023-02-17 09:24:18,387 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-17 09:24:18,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 09:24:18,387 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:24:18,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash 836741727, now seen corresponding path program 1 times [2023-02-17 09:24:18,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475340194] [2023-02-17 09:24:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475340194] [2023-02-17 09:24:18,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475340194] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317790576] [2023-02-17 09:24:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:18,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:18,474 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) [2023-02-17 09:24:18,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:18,527 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-02-17 09:24:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:18,527 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 [2023-02-17 09:24:18,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:18,529 INFO L225 Difference]: With dead ends: 56 [2023-02-17 09:24:18,529 INFO L226 Difference]: Without dead ends: 54 [2023-02-17 09:24:18,529 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 [2023-02-17 09:24:18,531 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 [2023-02-17 09:24:18,532 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] [2023-02-17 09:24:18,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-17 09:24:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-17 09:24:18,538 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) [2023-02-17 09:24:18,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2023-02-17 09:24:18,540 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 9 [2023-02-17 09:24:18,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:18,540 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2023-02-17 09:24:18,541 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) [2023-02-17 09:24:18,541 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2023-02-17 09:24:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:18,542 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:24:18,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,543 INFO L85 PathProgramCache]: Analyzing trace with hash 169143521, now seen corresponding path program 1 times [2023-02-17 09:24:18,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716255290] [2023-02-17 09:24:18,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716255290] [2023-02-17 09:24:18,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716255290] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835504725] [2023-02-17 09:24:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:18,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:18,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:18,649 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) [2023-02-17 09:24:18,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:18,706 INFO L93 Difference]: Finished difference Result 95 states and 134 transitions. [2023-02-17 09:24:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:18,709 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 [2023-02-17 09:24:18,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:18,711 INFO L225 Difference]: With dead ends: 95 [2023-02-17 09:24:18,712 INFO L226 Difference]: Without dead ends: 94 [2023-02-17 09:24:18,712 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 [2023-02-17 09:24:18,713 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 [2023-02-17 09:24:18,716 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] [2023-02-17 09:24:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-17 09:24:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2023-02-17 09:24:18,732 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) [2023-02-17 09:24:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 130 transitions. [2023-02-17 09:24:18,741 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 130 transitions. Word has length 10 [2023-02-17 09:24:18,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:18,742 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 130 transitions. [2023-02-17 09:24:18,742 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) [2023-02-17 09:24:18,742 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 130 transitions. [2023-02-17 09:24:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:18,743 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:24:18,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,745 INFO L85 PathProgramCache]: Analyzing trace with hash 169143170, now seen corresponding path program 1 times [2023-02-17 09:24:18,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262997504] [2023-02-17 09:24:18,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262997504] [2023-02-17 09:24:18,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262997504] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:18,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923612399] [2023-02-17 09:24:18,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:18,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:18,804 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) [2023-02-17 09:24:18,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:18,850 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions. [2023-02-17 09:24:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:18,851 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 [2023-02-17 09:24:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:18,852 INFO L225 Difference]: With dead ends: 98 [2023-02-17 09:24:18,852 INFO L226 Difference]: Without dead ends: 97 [2023-02-17 09:24:18,852 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 [2023-02-17 09:24:18,858 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 [2023-02-17 09:24:18,859 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] [2023-02-17 09:24:18,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-17 09:24:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-02-17 09:24:18,867 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) [2023-02-17 09:24:18,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2023-02-17 09:24:18,868 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 10 [2023-02-17 09:24:18,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:18,869 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2023-02-17 09:24:18,869 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) [2023-02-17 09:24:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2023-02-17 09:24:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:18,870 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:24:18,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1417352704, now seen corresponding path program 1 times [2023-02-17 09:24:18,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748792715] [2023-02-17 09:24:18,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748792715] [2023-02-17 09:24:18,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748792715] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:18,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829504276] [2023-02-17 09:24:18,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:18,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:18,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:18,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:18,910 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) [2023-02-17 09:24:18,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:18,935 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2023-02-17 09:24:18,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:18,936 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 [2023-02-17 09:24:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:18,937 INFO L225 Difference]: With dead ends: 88 [2023-02-17 09:24:18,937 INFO L226 Difference]: Without dead ends: 87 [2023-02-17 09:24:18,938 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 [2023-02-17 09:24:18,939 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 [2023-02-17 09:24:18,939 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] [2023-02-17 09:24:18,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-17 09:24:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-17 09:24:18,947 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) [2023-02-17 09:24:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2023-02-17 09:24:18,949 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 10 [2023-02-17 09:24:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:18,949 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2023-02-17 09:24:18,949 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) [2023-02-17 09:24:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2023-02-17 09:24:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:18,950 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:18,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:18,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 09:24:18,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1417353055, now seen corresponding path program 1 times [2023-02-17 09:24:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:18,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105477887] [2023-02-17 09:24:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:18,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:18,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:18,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105477887] [2023-02-17 09:24:18,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105477887] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:18,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:18,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:18,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293150481] [2023-02-17 09:24:18,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:18,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:18,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:19,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:19,000 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) [2023-02-17 09:24:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:19,020 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2023-02-17 09:24:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:19,020 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 [2023-02-17 09:24:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:19,021 INFO L225 Difference]: With dead ends: 95 [2023-02-17 09:24:19,021 INFO L226 Difference]: Without dead ends: 94 [2023-02-17 09:24:19,022 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 [2023-02-17 09:24:19,023 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 [2023-02-17 09:24:19,023 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] [2023-02-17 09:24:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-17 09:24:19,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 48. [2023-02-17 09:24:19,029 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) [2023-02-17 09:24:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-02-17 09:24:19,030 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 10 [2023-02-17 09:24:19,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:19,030 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-02-17 09:24:19,030 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) [2023-02-17 09:24:19,030 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-02-17 09:24:19,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 09:24:19,031 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:19,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:19,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 09:24:19,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:19,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:19,032 INFO L85 PathProgramCache]: Analyzing trace with hash 948481931, now seen corresponding path program 1 times [2023-02-17 09:24:19,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:19,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819036838] [2023-02-17 09:24:19,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:19,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819036838] [2023-02-17 09:24:19,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819036838] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:19,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:19,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:19,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076167714] [2023-02-17 09:24:19,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:19,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:19,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:19,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:19,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:19,082 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) [2023-02-17 09:24:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:19,116 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-17 09:24:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:19,117 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 [2023-02-17 09:24:19,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:19,119 INFO L225 Difference]: With dead ends: 62 [2023-02-17 09:24:19,119 INFO L226 Difference]: Without dead ends: 61 [2023-02-17 09:24:19,120 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 [2023-02-17 09:24:19,121 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 [2023-02-17 09:24:19,123 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] [2023-02-17 09:24:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-17 09:24:19,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-02-17 09:24:19,130 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) [2023-02-17 09:24:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-02-17 09:24:19,131 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 11 [2023-02-17 09:24:19,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:19,131 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-02-17 09:24:19,131 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) [2023-02-17 09:24:19,132 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-02-17 09:24:19,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 09:24:19,132 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:19,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:19,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 09:24:19,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:19,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:19,133 INFO L85 PathProgramCache]: Analyzing trace with hash 948471040, now seen corresponding path program 1 times [2023-02-17 09:24:19,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:19,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382895645] [2023-02-17 09:24:19,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382895645] [2023-02-17 09:24:19,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382895645] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:19,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:19,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937533270] [2023-02-17 09:24:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:19,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:19,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:19,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:19,187 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) [2023-02-17 09:24:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:19,210 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-02-17 09:24:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:19,211 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 [2023-02-17 09:24:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:19,211 INFO L225 Difference]: With dead ends: 58 [2023-02-17 09:24:19,211 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 09:24:19,211 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 [2023-02-17 09:24:19,212 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 [2023-02-17 09:24:19,212 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] [2023-02-17 09:24:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 09:24:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-02-17 09:24:19,216 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) [2023-02-17 09:24:19,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-02-17 09:24:19,217 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 11 [2023-02-17 09:24:19,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:19,217 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-02-17 09:24:19,217 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) [2023-02-17 09:24:19,217 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-02-17 09:24:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 09:24:19,218 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:19,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 09:24:19,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -617354162, now seen corresponding path program 1 times [2023-02-17 09:24:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817829302] [2023-02-17 09:24:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:19,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817829302] [2023-02-17 09:24:19,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817829302] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:19,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940265169] [2023-02-17 09:24:19,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:19,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:19,250 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) [2023-02-17 09:24:19,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 09:24:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 09:24:19,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:19,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940265169] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:19,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:19,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-17 09:24:19,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735067689] [2023-02-17 09:24:19,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 09:24:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:19,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 09:24:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:19,359 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) [2023-02-17 09:24:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:19,424 INFO L93 Difference]: Finished difference Result 132 states and 168 transitions. [2023-02-17 09:24:19,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:19,425 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 [2023-02-17 09:24:19,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:19,426 INFO L225 Difference]: With dead ends: 132 [2023-02-17 09:24:19,426 INFO L226 Difference]: Without dead ends: 130 [2023-02-17 09:24:19,427 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 [2023-02-17 09:24:19,429 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:19,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 73 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-17 09:24:19,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 65. [2023-02-17 09:24:19,445 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) [2023-02-17 09:24:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2023-02-17 09:24:19,447 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 12 [2023-02-17 09:24:19,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:19,448 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2023-02-17 09:24:19,448 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) [2023-02-17 09:24:19,449 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2023-02-17 09:24:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 09:24:19,452 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:19,452 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:19,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:19,657 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 [2023-02-17 09:24:19,658 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:19,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1583048475, now seen corresponding path program 1 times [2023-02-17 09:24:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:19,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361309254] [2023-02-17 09:24:19,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:19,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361309254] [2023-02-17 09:24:19,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361309254] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:19,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650858909] [2023-02-17 09:24:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:19,698 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) [2023-02-17 09:24:19,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 09:24:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:19,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:19,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:19,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 09:24:19,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650858909] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:19,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 09:24:19,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-17 09:24:19,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166584968] [2023-02-17 09:24:19,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:19,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:19,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:19,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:24:19,758 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) [2023-02-17 09:24:19,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:19,782 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2023-02-17 09:24:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:19,783 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 [2023-02-17 09:24:19,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:19,784 INFO L225 Difference]: With dead ends: 82 [2023-02-17 09:24:19,784 INFO L226 Difference]: Without dead ends: 81 [2023-02-17 09:24:19,784 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 [2023-02-17 09:24:19,785 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 [2023-02-17 09:24:19,785 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] [2023-02-17 09:24:19,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-17 09:24:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 56. [2023-02-17 09:24:19,789 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) [2023-02-17 09:24:19,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-02-17 09:24:19,790 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 15 [2023-02-17 09:24:19,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:19,791 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-02-17 09:24:19,791 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) [2023-02-17 09:24:19,791 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-02-17 09:24:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 09:24:19,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:19,792 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:19,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:20,000 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 [2023-02-17 09:24:20,001 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:20,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -951056633, now seen corresponding path program 1 times [2023-02-17 09:24:20,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:20,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408130076] [2023-02-17 09:24:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:20,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:20,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408130076] [2023-02-17 09:24:20,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408130076] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:20,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408302808] [2023-02-17 09:24:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:20,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:20,040 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) [2023-02-17 09:24:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 09:24:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:20,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:20,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:20,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:20,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 09:24:20,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408302808] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:20,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 09:24:20,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-17 09:24:20,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478632976] [2023-02-17 09:24:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:20,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:20,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:24:20,110 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) [2023-02-17 09:24:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:20,136 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-02-17 09:24:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:20,136 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 [2023-02-17 09:24:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:20,137 INFO L225 Difference]: With dead ends: 56 [2023-02-17 09:24:20,137 INFO L226 Difference]: Without dead ends: 55 [2023-02-17 09:24:20,137 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 [2023-02-17 09:24:20,138 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 [2023-02-17 09:24:20,138 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] [2023-02-17 09:24:20,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-17 09:24:20,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-17 09:24:20,142 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) [2023-02-17 09:24:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2023-02-17 09:24:20,143 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 17 [2023-02-17 09:24:20,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:20,143 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2023-02-17 09:24:20,143 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) [2023-02-17 09:24:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2023-02-17 09:24:20,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 09:24:20,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:20,146 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:20,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:20,351 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 [2023-02-17 09:24:20,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:20,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:20,352 INFO L85 PathProgramCache]: Analyzing trace with hash 582015517, now seen corresponding path program 1 times [2023-02-17 09:24:20,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:20,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590247029] [2023-02-17 09:24:20,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:20,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:20,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:20,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:20,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590247029] [2023-02-17 09:24:20,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590247029] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:20,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595272476] [2023-02-17 09:24:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:20,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:20,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:20,392 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) [2023-02-17 09:24:20,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 09:24:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:20,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 09:24:20,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:20,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:20,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:20,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595272476] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:20,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:20,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-17 09:24:20,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948450370] [2023-02-17 09:24:20,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 09:24:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 09:24:20,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:20,457 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) [2023-02-17 09:24:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:20,480 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2023-02-17 09:24:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 09:24:20,481 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 [2023-02-17 09:24:20,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:20,482 INFO L225 Difference]: With dead ends: 104 [2023-02-17 09:24:20,483 INFO L226 Difference]: Without dead ends: 103 [2023-02-17 09:24:20,483 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 [2023-02-17 09:24:20,483 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 [2023-02-17 09:24:20,484 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] [2023-02-17 09:24:20,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-17 09:24:20,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-02-17 09:24:20,495 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) [2023-02-17 09:24:20,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-02-17 09:24:20,496 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-02-17 09:24:20,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-02-17 09:24:20,497 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) [2023-02-17 09:24:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-02-17 09:24:20,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-17 09:24:20,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:20,498 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:20,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:20,703 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 [2023-02-17 09:24:20,703 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:20,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:20,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1562312095, now seen corresponding path program 2 times [2023-02-17 09:24:20,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:20,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134901547] [2023-02-17 09:24:20,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:20,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:20,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:24:20,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134901547] [2023-02-17 09:24:20,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134901547] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:20,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633548948] [2023-02-17 09:24:20,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:24:20,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:20,727 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) [2023-02-17 09:24:20,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 09:24:20,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-17 09:24:20,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:20,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 09:24:20,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:24:20,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-17 09:24:20,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633548948] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:20,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:20,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-17 09:24:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344118758] [2023-02-17 09:24:20,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:20,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 09:24:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:20,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 09:24:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 09:24:20,790 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) [2023-02-17 09:24:20,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:20,823 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2023-02-17 09:24:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 09:24:20,823 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 [2023-02-17 09:24:20,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:20,825 INFO L225 Difference]: With dead ends: 142 [2023-02-17 09:24:20,825 INFO L226 Difference]: Without dead ends: 141 [2023-02-17 09:24:20,825 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 [2023-02-17 09:24:20,826 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 [2023-02-17 09:24:20,826 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] [2023-02-17 09:24:20,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-17 09:24:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2023-02-17 09:24:20,831 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) [2023-02-17 09:24:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2023-02-17 09:24:20,832 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 21 [2023-02-17 09:24:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:20,832 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2023-02-17 09:24:20,833 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) [2023-02-17 09:24:20,833 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2023-02-17 09:24:20,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 09:24:20,833 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:20,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:20,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:21,039 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 [2023-02-17 09:24:21,040 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1096745154, now seen corresponding path program 1 times [2023-02-17 09:24:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037051083] [2023-02-17 09:24:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-17 09:24:21,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:21,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037051083] [2023-02-17 09:24:21,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037051083] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:21,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:21,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460541059] [2023-02-17 09:24:21,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:21,076 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) [2023-02-17 09:24:21,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:21,088 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2023-02-17 09:24:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:21,089 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 [2023-02-17 09:24:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:21,089 INFO L225 Difference]: With dead ends: 100 [2023-02-17 09:24:21,090 INFO L226 Difference]: Without dead ends: 99 [2023-02-17 09:24:21,090 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 [2023-02-17 09:24:21,090 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 [2023-02-17 09:24:21,091 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] [2023-02-17 09:24:21,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-17 09:24:21,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 50. [2023-02-17 09:24:21,094 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) [2023-02-17 09:24:21,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-02-17 09:24:21,095 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2023-02-17 09:24:21,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:21,095 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-02-17 09:24:21,095 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) [2023-02-17 09:24:21,095 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-02-17 09:24:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-17 09:24:21,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:21,097 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:21,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 09:24:21,097 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:21,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:21,098 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551912, now seen corresponding path program 2 times [2023-02-17 09:24:21,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:21,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955102372] [2023-02-17 09:24:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:21,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955102372] [2023-02-17 09:24:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955102372] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588369662] [2023-02-17 09:24:21,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:24:21,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:21,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:21,187 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) [2023-02-17 09:24:21,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 09:24:21,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:24:21,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:21,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:21,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:21,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588369662] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:21,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:21,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-17 09:24:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503672496] [2023-02-17 09:24:21,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 09:24:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:21,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 09:24:21,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-17 09:24:21,298 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) [2023-02-17 09:24:21,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:21,335 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2023-02-17 09:24:21,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 09:24:21,336 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 [2023-02-17 09:24:21,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:21,337 INFO L225 Difference]: With dead ends: 99 [2023-02-17 09:24:21,337 INFO L226 Difference]: Without dead ends: 98 [2023-02-17 09:24:21,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 62 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-17 09:24:21,338 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 [2023-02-17 09:24:21,338 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] [2023-02-17 09:24:21,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-17 09:24:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-17 09:24:21,346 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) [2023-02-17 09:24:21,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-02-17 09:24:21,347 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 36 [2023-02-17 09:24:21,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:21,347 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-02-17 09:24:21,347 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) [2023-02-17 09:24:21,347 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-02-17 09:24:21,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-17 09:24:21,350 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:21,350 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:21,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:21,556 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 [2023-02-17 09:24:21,557 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:21,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1581473794, now seen corresponding path program 3 times [2023-02-17 09:24:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:21,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409136023] [2023-02-17 09:24:21,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:21,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:21,744 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:21,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:21,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409136023] [2023-02-17 09:24:21,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409136023] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176360663] [2023-02-17 09:24:21,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:24:21,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:21,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:21,746 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) [2023-02-17 09:24:21,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 09:24:21,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-17 09:24:21,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:21,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 09:24:21,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:21,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176360663] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:22,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:22,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-17 09:24:22,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623888410] [2023-02-17 09:24:22,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:22,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-17 09:24:22,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:22,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-17 09:24:22,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-17 09:24:22,060 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) [2023-02-17 09:24:22,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:22,144 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2023-02-17 09:24:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-17 09:24:22,145 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 [2023-02-17 09:24:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:22,147 INFO L225 Difference]: With dead ends: 195 [2023-02-17 09:24:22,147 INFO L226 Difference]: Without dead ends: 194 [2023-02-17 09:24:22,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 122 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-17 09:24:22,148 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 [2023-02-17 09:24:22,148 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] [2023-02-17 09:24:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-17 09:24:22,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-02-17 09:24:22,158 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) [2023-02-17 09:24:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2023-02-17 09:24:22,159 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 72 [2023-02-17 09:24:22,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:22,160 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2023-02-17 09:24:22,160 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) [2023-02-17 09:24:22,160 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2023-02-17 09:24:22,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-02-17 09:24:22,162 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:22,162 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:22,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:22,368 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 [2023-02-17 09:24:22,369 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -760026454, now seen corresponding path program 4 times [2023-02-17 09:24:22,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948029132] [2023-02-17 09:24:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:22,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:23,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:23,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:23,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948029132] [2023-02-17 09:24:23,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948029132] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:23,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260852644] [2023-02-17 09:24:23,057 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:24:23,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:23,059 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) [2023-02-17 09:24:23,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 09:24:23,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:24:23,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:23,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-17 09:24:23,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:23,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:23,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:24,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260852644] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:24,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:24,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-17 09:24:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654294587] [2023-02-17 09:24:24,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:24,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-17 09:24:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:24,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-17 09:24:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-17 09:24:24,035 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) [2023-02-17 09:24:24,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:24,246 INFO L93 Difference]: Finished difference Result 387 states and 459 transitions. [2023-02-17 09:24:24,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-17 09:24:24,246 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 [2023-02-17 09:24:24,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:24,248 INFO L225 Difference]: With dead ends: 387 [2023-02-17 09:24:24,248 INFO L226 Difference]: Without dead ends: 386 [2023-02-17 09:24:24,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 242 SyntacticMatches, 22 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-17 09:24:24,250 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 [2023-02-17 09:24:24,250 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] [2023-02-17 09:24:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-02-17 09:24:24,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-02-17 09:24:24,266 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) [2023-02-17 09:24:24,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 435 transitions. [2023-02-17 09:24:24,267 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 435 transitions. Word has length 144 [2023-02-17 09:24:24,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:24,268 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 435 transitions. [2023-02-17 09:24:24,268 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) [2023-02-17 09:24:24,268 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 435 transitions. [2023-02-17 09:24:24,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-02-17 09:24:24,271 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:24,271 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:24,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:24,477 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 [2023-02-17 09:24:24,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash -690283518, now seen corresponding path program 5 times [2023-02-17 09:24:24,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:24,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241099895] [2023-02-17 09:24:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:26,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241099895] [2023-02-17 09:24:26,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241099895] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:26,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827076132] [2023-02-17 09:24:26,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:24:26,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:26,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:26,680 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) [2023-02-17 09:24:26,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 09:24:26,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-17 09:24:26,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:26,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-17 09:24:26,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:30,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827076132] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:30,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:30,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-17 09:24:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869849972] [2023-02-17 09:24:30,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:30,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-17 09:24:30,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-17 09:24:30,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-17 09:24:30,131 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) [2023-02-17 09:24:31,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:31,209 INFO L93 Difference]: Finished difference Result 771 states and 915 transitions. [2023-02-17 09:24:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-17 09:24:31,209 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 [2023-02-17 09:24:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:31,212 INFO L225 Difference]: With dead ends: 771 [2023-02-17 09:24:31,212 INFO L226 Difference]: Without dead ends: 770 [2023-02-17 09:24:31,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 482 SyntacticMatches, 46 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-17 09:24:31,216 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 710 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:24:31,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-02-17 09:24:31,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2023-02-17 09:24:31,245 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) [2023-02-17 09:24:31,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 867 transitions. [2023-02-17 09:24:31,247 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 867 transitions. Word has length 288 [2023-02-17 09:24:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 867 transitions. [2023-02-17 09:24:31,248 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) [2023-02-17 09:24:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 867 transitions. [2023-02-17 09:24:31,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-02-17 09:24:31,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:31,257 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:31,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:31,463 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 [2023-02-17 09:24:31,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash -907415886, now seen corresponding path program 6 times [2023-02-17 09:24:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:31,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079096488] [2023-02-17 09:24:31,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:31,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079096488] [2023-02-17 09:24:38,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079096488] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:38,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802756856] [2023-02-17 09:24:38,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:24:38,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:38,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:38,319 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) [2023-02-17 09:24:38,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 09:24:38,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-17 09:24:38,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:38,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-17 09:24:38,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:41,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802756856] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:50,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:50,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-17 09:24:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829878767] [2023-02-17 09:24:50,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:50,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-17 09:24:50,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:50,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-17 09:24:50,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-17 09:24:50,183 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) [2023-02-17 09:24:59,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:59,207 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2023-02-17 09:24:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-17 09:24:59,208 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 [2023-02-17 09:24:59,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:59,213 INFO L225 Difference]: With dead ends: 1539 [2023-02-17 09:24:59,213 INFO L226 Difference]: Without dead ends: 1538 [2023-02-17 09:24:59,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 962 SyntacticMatches, 94 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4373 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-17 09:24:59,216 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2329 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2023-02-17 09:24:59,217 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] [2023-02-17 09:24:59,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-02-17 09:24:59,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2023-02-17 09:24:59,272 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) [2023-02-17 09:24:59,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1731 transitions. [2023-02-17 09:24:59,276 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1731 transitions. Word has length 576 [2023-02-17 09:24:59,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:59,277 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1731 transitions. [2023-02-17 09:24:59,277 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) [2023-02-17 09:24:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1731 transitions. [2023-02-17 09:24:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2023-02-17 09:24:59,312 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:59,312 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:59,320 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 09:24:59,520 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 [2023-02-17 09:24:59,520 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:24:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash 159470610, now seen corresponding path program 7 times [2023-02-17 09:24:59,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:59,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485885026] [2023-02-17 09:24:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:25,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:25,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485885026] [2023-02-17 09:25:25,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485885026] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:25,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429808363] [2023-02-17 09:25:25,360 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 09:25:25,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:25,369 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) [2023-02-17 09:25:25,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 09:25:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-17 09:25:25,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:37,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:26:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:11,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429808363] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:26:11,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:26:11,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-17 09:26:11,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327741415] [2023-02-17 09:26:11,432 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:26:11,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-17 09:26:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:26:11,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-17 09:26:11,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-17 09:26:11,486 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) [2023-02-17 09:28:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:28:12,738 INFO L93 Difference]: Finished difference Result 3075 states and 3651 transitions. [2023-02-17 09:28:12,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-17 09:28:12,739 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 [2023-02-17 09:28:12,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:28:12,749 INFO L225 Difference]: With dead ends: 3075 [2023-02-17 09:28:12,749 INFO L226 Difference]: Without dead ends: 3074 [2023-02-17 09:28:12,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2494 GetRequests, 1922 SyntacticMatches, 190 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17957 ImplicationChecksByTransitivity, 56.6s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-17 09:28:12,756 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, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 09:28:12,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5522 Valid, 2726 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-17 09:28:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-02-17 09:28:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2023-02-17 09:28:12,849 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) [2023-02-17 09:28:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3459 transitions. [2023-02-17 09:28:12,856 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3459 transitions. Word has length 1152 [2023-02-17 09:28:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:28:12,857 INFO L495 AbstractCegarLoop]: Abstraction has 3074 states and 3459 transitions. [2023-02-17 09:28:12,859 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) [2023-02-17 09:28:12,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3459 transitions. [2023-02-17 09:28:12,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2023-02-17 09:28:12,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:28:12,901 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:28:12,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 09:28:13,108 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 [2023-02-17 09:28:13,108 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-17 09:28:13,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:28:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1654070994, now seen corresponding path program 8 times [2023-02-17 09:28:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:28:13,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467266661] [2023-02-17 09:28:13,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:28:13,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:28:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat