./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-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/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:24:26,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:24:26,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:24:26,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:24:26,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:24:26,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:24:26,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:24:26,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:24:26,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:24:26,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:24:26,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:24:26,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:24:26,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:24:26,399 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:24:26,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:24:26,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:24:26,401 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:24:26,402 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:24:26,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:24:26,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:24:26,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:24:26,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:24:26,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:24:26,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:24:26,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:24:26,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:24:26,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:24:26,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:24:26,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:24:26,412 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:24:26,412 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:24:26,413 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:24:26,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:24:26,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:24:26,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:24:26,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:24:26,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:24:26,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:24:26,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:24:26,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:24:26,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:24:26,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-17 09:24:26,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:24:26,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:24:26,440 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:24:26,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:24:26,441 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 09:24:26,441 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 09:24:26,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:24:26,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:24:26,442 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:24:26,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:24:26,442 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:24:26,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:24:26,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:24:26,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 09:24:26,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:24:26,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:24:26,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 09:24:26,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:26,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:24:26,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 09:24:26,445 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 09:24:26,446 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 09:24:26,446 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2023-02-17 09:24:26,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:24:26,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:24:26,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:24:26,646 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:24:26,646 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:24:26,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:24:27,620 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:24:27,761 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:24:27,762 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:24:27,765 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9622f9d4/71aea6667a2045109e5b742a6a25a858/FLAG08f92fdfb [2023-02-17 09:24:27,780 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9622f9d4/71aea6667a2045109e5b742a6a25a858 [2023-02-17 09:24:27,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:24:27,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:24:27,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:27,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:24:27,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:24:27,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4352a3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27, skipping insertion in model container [2023-02-17 09:24:27,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:24:27,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:24:27,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:27,895 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:24:27,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:24:27,910 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:24:27,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27 WrapperNode [2023-02-17 09:24:27,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:24:27,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:27,912 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:24:27,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:24:27,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,919 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,928 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2023-02-17 09:24:27,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:24:27,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:24:27,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:24:27,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:24:27,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,938 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:24:27,940 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:24:27,940 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:24:27,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:24:27,941 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (1/1) ... [2023-02-17 09:24:27,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 09:24:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:27,997 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 09:24:28,002 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 09:24:28,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:24:28,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:24:28,065 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:24:28,066 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:24:28,178 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:24:28,182 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:24:28,182 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:24:28,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:28 BoogieIcfgContainer [2023-02-17 09:24:28,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:24:28,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 09:24:28,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 09:24:28,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 09:24:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 09:24:27" (1/3) ... [2023-02-17 09:24:28,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb24206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:28, skipping insertion in model container [2023-02-17 09:24:28,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:24:27" (2/3) ... [2023-02-17 09:24:28,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb24206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 09:24:28, skipping insertion in model container [2023-02-17 09:24:28,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:24:28" (3/3) ... [2023-02-17 09:24:28,190 INFO L112 eAbstractionObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:24:28,200 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 09:24:28,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-17 09:24:28,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 09:24:28,233 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;@552d4975, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 09:24:28,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-17 09:24:28,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-17 09:24:28,245 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 09:24:28,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 28693987, now seen corresponding path program 1 times [2023-02-17 09:24:28,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755507692] [2023-02-17 09:24:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,348 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 09:24:28,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755507692] [2023-02-17 09:24:28,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755507692] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:28,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210839547] [2023-02-17 09:24:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:28,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:28,406 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.8125) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,483 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2023-02-17 09:24:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:28,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-17 09:24:28,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,490 INFO L225 Difference]: With dead ends: 54 [2023-02-17 09:24:28,490 INFO L226 Difference]: Without dead ends: 24 [2023-02-17 09:24:28,492 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 09:24:28,494 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:28,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-17 09:24:28,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2023-02-17 09:24:28,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.6) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-02-17 09:24:28,514 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2023-02-17 09:24:28,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,514 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-02-17 09:24:28,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,514 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-02-17 09:24:28,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 09:24:28,515 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 09:24:28,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,516 INFO L85 PathProgramCache]: Analyzing trace with hash 889513645, now seen corresponding path program 1 times [2023-02-17 09:24:28,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074926119] [2023-02-17 09:24:28,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,537 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 09:24:28,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074926119] [2023-02-17 09:24:28,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074926119] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:28,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738845936] [2023-02-17 09:24:28,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:28,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:28,540 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,555 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2023-02-17 09:24:28,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:28,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-17 09:24:28,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,556 INFO L225 Difference]: With dead ends: 23 [2023-02-17 09:24:28,556 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 09:24:28,556 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 09:24:28,557 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 10 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 09:24:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-17 09:24:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-02-17 09:24:28,561 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 6 [2023-02-17 09:24:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,561 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-17 09:24:28,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-02-17 09:24:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:28,562 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 09:24:28,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash 124122716, now seen corresponding path program 1 times [2023-02-17 09:24:28,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551579374] [2023-02-17 09:24:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,601 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 09:24:28,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551579374] [2023-02-17 09:24:28,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551579374] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 09:24:28,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870496934] [2023-02-17 09:24:28,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 09:24:28,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 09:24:28,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 09:24:28,604 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,664 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2023-02-17 09:24:28,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 09:24:28,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 09:24:28,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,665 INFO L225 Difference]: With dead ends: 42 [2023-02-17 09:24:28,665 INFO L226 Difference]: Without dead ends: 41 [2023-02-17 09:24:28,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-17 09:24:28,666 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 21 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-17 09:24:28,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2023-02-17 09:24:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-17 09:24:28,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 8 [2023-02-17 09:24:28,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,670 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-17 09:24:28,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-17 09:24:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-17 09:24:28,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 09:24:28,672 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash 124122767, now seen corresponding path program 1 times [2023-02-17 09:24:28,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642897542] [2023-02-17 09:24:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,697 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 09:24:28,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642897542] [2023-02-17 09:24:28,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642897542] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:28,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23597064] [2023-02-17 09:24:28,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:28,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,700 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,735 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2023-02-17 09:24:28,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:28,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-17 09:24:28,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,739 INFO L225 Difference]: With dead ends: 59 [2023-02-17 09:24:28,739 INFO L226 Difference]: Without dead ends: 57 [2023-02-17 09:24:28,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,748 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 26 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-17 09:24:28,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 46. [2023-02-17 09:24:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.564102564102564) internal successors, (61), 45 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-17 09:24:28,757 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 8 [2023-02-17 09:24:28,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,757 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-17 09:24:28,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,757 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-17 09:24:28,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 09:24:28,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 09:24:28,758 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,759 INFO L85 PathProgramCache]: Analyzing trace with hash -447163028, now seen corresponding path program 1 times [2023-02-17 09:24:28,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014379376] [2023-02-17 09:24:28,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,802 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 09:24:28,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014379376] [2023-02-17 09:24:28,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014379376] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:28,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433222966] [2023-02-17 09:24:28,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,806 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,848 INFO L93 Difference]: Finished difference Result 61 states and 78 transitions. [2023-02-17 09:24:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 09:24:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,849 INFO L225 Difference]: With dead ends: 61 [2023-02-17 09:24:28,849 INFO L226 Difference]: Without dead ends: 60 [2023-02-17 09:24:28,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,850 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-17 09:24:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-02-17 09:24:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.553191489361702) internal successors, (73), 53 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2023-02-17 09:24:28,857 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 9 [2023-02-17 09:24:28,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,857 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2023-02-17 09:24:28,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2023-02-17 09:24:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 09:24:28,858 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 09:24:28,858 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash -447161458, now seen corresponding path program 1 times [2023-02-17 09:24:28,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050332556] [2023-02-17 09:24:28,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,878 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 09:24:28,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050332556] [2023-02-17 09:24:28,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050332556] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:28,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865555358] [2023-02-17 09:24:28,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:28,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:28,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,880 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,929 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2023-02-17 09:24:28,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:28,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-17 09:24:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,930 INFO L225 Difference]: With dead ends: 98 [2023-02-17 09:24:28,932 INFO L226 Difference]: Without dead ends: 97 [2023-02-17 09:24:28,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,933 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-17 09:24:28,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2023-02-17 09:24:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 79 states have (on average 1.5316455696202531) internal successors, (121), 85 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2023-02-17 09:24:28,946 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 9 [2023-02-17 09:24:28,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,946 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2023-02-17 09:24:28,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2023-02-17 09:24:28,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 09:24:28,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 09:24:28,948 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash -977103247, now seen corresponding path program 1 times [2023-02-17 09:24:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993691592] [2023-02-17 09:24:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:28,970 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 09:24:28,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993691592] [2023-02-17 09:24:28,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993691592] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:28,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:28,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 09:24:28,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366983603] [2023-02-17 09:24:28,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:28,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 09:24:28,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:28,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 09:24:28,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 09:24:28,972 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:28,988 INFO L93 Difference]: Finished difference Result 86 states and 121 transitions. [2023-02-17 09:24:28,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 09:24:28,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-17 09:24:28,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:28,989 INFO L225 Difference]: With dead ends: 86 [2023-02-17 09:24:28,989 INFO L226 Difference]: Without dead ends: 85 [2023-02-17 09:24:28,989 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 09:24:28,990 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:28,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 17 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:28,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-17 09:24:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-02-17 09:24:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 84 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 115 transitions. [2023-02-17 09:24:28,996 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 115 transitions. Word has length 10 [2023-02-17 09:24:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:28,997 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 115 transitions. [2023-02-17 09:24:28,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 115 transitions. [2023-02-17 09:24:28,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 09:24:28,997 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:28,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 09:24:28,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:28,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:28,998 INFO L85 PathProgramCache]: Analyzing trace with hash -225429520, now seen corresponding path program 1 times [2023-02-17 09:24:28,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444050362] [2023-02-17 09:24:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:28,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,018 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 09:24:29,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:29,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444050362] [2023-02-17 09:24:29,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444050362] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 09:24:29,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 09:24:29,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 09:24:29,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663374653] [2023-02-17 09:24:29,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 09:24:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 09:24:29,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 09:24:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 09:24:29,020 INFO L87 Difference]: Start difference. First operand 85 states and 115 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:29,027 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2023-02-17 09:24:29,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 09:24:29,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-17 09:24:29,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:29,028 INFO L225 Difference]: With dead ends: 85 [2023-02-17 09:24:29,028 INFO L226 Difference]: Without dead ends: 84 [2023-02-17 09:24:29,028 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 09:24:29,028 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:29,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-02-17 09:24:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2023-02-17 09:24:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 79 states have (on average 1.379746835443038) internal successors, (109), 83 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2023-02-17 09:24:29,034 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 11 [2023-02-17 09:24:29,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:29,035 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2023-02-17 09:24:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2023-02-17 09:24:29,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-17 09:24:29,035 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:29,036 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:29,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 09:24:29,036 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:29,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash -458138511, now seen corresponding path program 1 times [2023-02-17 09:24:29,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:29,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226165639] [2023-02-17 09:24:29,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,072 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 09:24:29,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226165639] [2023-02-17 09:24:29,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226165639] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291729115] [2023-02-17 09:24:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:29,076 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 09:24:29,077 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 09:24:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:24:29,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:29,159 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 09:24:29,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:29,204 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 09:24:29,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291729115] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:29,205 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:29,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-02-17 09:24:29,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782616839] [2023-02-17 09:24:29,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:29,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 09:24:29,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:29,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 09:24:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-17 09:24:29,208 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:29,476 INFO L93 Difference]: Finished difference Result 214 states and 298 transitions. [2023-02-17 09:24:29,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-02-17 09:24:29,476 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-17 09:24:29,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:29,478 INFO L225 Difference]: With dead ends: 214 [2023-02-17 09:24:29,478 INFO L226 Difference]: Without dead ends: 211 [2023-02-17 09:24:29,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=354, Invalid=768, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 09:24:29,480 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 183 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:29,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 30 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-02-17 09:24:29,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 110. [2023-02-17 09:24:29,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 107 states have (on average 1.280373831775701) internal successors, (137), 109 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2023-02-17 09:24:29,509 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 14 [2023-02-17 09:24:29,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:29,509 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2023-02-17 09:24:29,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,509 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2023-02-17 09:24:29,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 09:24:29,510 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:29,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:24:29,525 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 09:24:29,717 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 09:24:29,717 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:29,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:29,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1317391881, now seen corresponding path program 1 times [2023-02-17 09:24:29,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:29,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64944446] [2023-02-17 09:24:29,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:29,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:29,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64944446] [2023-02-17 09:24:29,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64944446] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:29,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794623695] [2023-02-17 09:24:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:29,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:29,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:29,774 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 09:24:29,776 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 09:24:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:24:29,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:29,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:29,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794623695] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:29,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:29,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-02-17 09:24:29,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906350105] [2023-02-17 09:24:29,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:29,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 09:24:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 09:24:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-17 09:24:29,875 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:29,995 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2023-02-17 09:24:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 09:24:29,996 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 09:24:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:29,997 INFO L225 Difference]: With dead ends: 229 [2023-02-17 09:24:29,997 INFO L226 Difference]: Without dead ends: 228 [2023-02-17 09:24:29,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=269, Unknown=0, NotChecked=0, Total=420 [2023-02-17 09:24:29,998 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 130 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:29,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 32 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:29,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-02-17 09:24:30,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 170. [2023-02-17 09:24:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 167 states have (on average 1.2455089820359282) internal successors, (208), 169 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:30,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2023-02-17 09:24:30,013 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 15 [2023-02-17 09:24:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:30,013 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2023-02-17 09:24:30,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:30,013 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2023-02-17 09:24:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-17 09:24:30,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:30,014 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:30,020 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 09:24:30,218 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 09:24:30,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:30,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:30,219 INFO L85 PathProgramCache]: Analyzing trace with hash -730743378, now seen corresponding path program 1 times [2023-02-17 09:24:30,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:30,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836922502] [2023-02-17 09:24:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:30,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:30,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:30,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836922502] [2023-02-17 09:24:30,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836922502] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:30,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77076005] [2023-02-17 09:24:30,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:30,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:30,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:30,244 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 09:24:30,246 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 09:24:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:30,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:24:30,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:30,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77076005] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:30,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:30,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-17 09:24:30,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454434305] [2023-02-17 09:24:30,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:30,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 09:24:30,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:30,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 09:24:30,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 09:24:30,292 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:30,345 INFO L93 Difference]: Finished difference Result 378 states and 473 transitions. [2023-02-17 09:24:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 09:24:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-02-17 09:24:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:30,347 INFO L225 Difference]: With dead ends: 378 [2023-02-17 09:24:30,347 INFO L226 Difference]: Without dead ends: 377 [2023-02-17 09:24:30,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-02-17 09:24:30,348 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 47 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:30,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 44 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 09:24:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-02-17 09:24:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2023-02-17 09:24:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 274 states have (on average 1.2372262773722629) internal successors, (339), 276 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2023-02-17 09:24:30,360 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 339 transitions. Word has length 19 [2023-02-17 09:24:30,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:30,360 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 339 transitions. [2023-02-17 09:24:30,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:30,360 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 339 transitions. [2023-02-17 09:24:30,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 09:24:30,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:30,364 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:24:30,369 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 09:24:30,568 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 09:24:30,569 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:30,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:30,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2017559647, now seen corresponding path program 1 times [2023-02-17 09:24:30,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:30,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987350782] [2023-02-17 09:24:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:30,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:24:30,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:30,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987350782] [2023-02-17 09:24:30,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987350782] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:30,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117755287] [2023-02-17 09:24:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:30,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:30,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:30,671 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 09:24:30,674 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 09:24:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 09:24:30,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:24:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 09:24:30,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117755287] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:30,873 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:30,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-02-17 09:24:30,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875020384] [2023-02-17 09:24:30,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-17 09:24:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:30,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-17 09:24:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-02-17 09:24:30,875 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. Second operand has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:31,141 INFO L93 Difference]: Finished difference Result 511 states and 639 transitions. [2023-02-17 09:24:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-17 09:24:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-17 09:24:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:31,143 INFO L225 Difference]: With dead ends: 511 [2023-02-17 09:24:31,143 INFO L226 Difference]: Without dead ends: 509 [2023-02-17 09:24:31,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=513, Invalid=1127, Unknown=0, NotChecked=0, Total=1640 [2023-02-17 09:24:31,144 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 73 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:31,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 7 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:31,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2023-02-17 09:24:31,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 311. [2023-02-17 09:24:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 308 states have (on average 1.2175324675324675) internal successors, (375), 310 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 375 transitions. [2023-02-17 09:24:31,154 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 375 transitions. Word has length 25 [2023-02-17 09:24:31,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:31,155 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 375 transitions. [2023-02-17 09:24:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.9444444444444446) internal successors, (71), 19 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 375 transitions. [2023-02-17 09:24:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 09:24:31,156 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:31,156 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:24:31,175 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 09:24:31,360 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 09:24:31,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:31,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 678241780, now seen corresponding path program 2 times [2023-02-17 09:24:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:31,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360150360] [2023-02-17 09:24:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360150360] [2023-02-17 09:24:31,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360150360] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:31,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466848499] [2023-02-17 09:24:31,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:24:31,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:31,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:31,413 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 09:24:31,415 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 09:24:31,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:24:31,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 09:24:31,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:31,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:31,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466848499] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:31,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:31,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 21 [2023-02-17 09:24:31,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487937933] [2023-02-17 09:24:31,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:31,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-17 09:24:31,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:31,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-17 09:24:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2023-02-17 09:24:31,569 INFO L87 Difference]: Start difference. First operand 311 states and 375 transitions. Second operand has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:32,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:32,165 INFO L93 Difference]: Finished difference Result 1537 states and 1825 transitions. [2023-02-17 09:24:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-02-17 09:24:32,166 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-17 09:24:32,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:32,170 INFO L225 Difference]: With dead ends: 1537 [2023-02-17 09:24:32,170 INFO L226 Difference]: Without dead ends: 1536 [2023-02-17 09:24:32,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2432 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1687, Invalid=4475, Unknown=0, NotChecked=0, Total=6162 [2023-02-17 09:24:32,173 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 317 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:32,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 34 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 09:24:32,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2023-02-17 09:24:32,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 715. [2023-02-17 09:24:32,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 712 states have (on average 1.2148876404494382) internal successors, (865), 714 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 865 transitions. [2023-02-17 09:24:32,199 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 865 transitions. Word has length 30 [2023-02-17 09:24:32,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:32,199 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 865 transitions. [2023-02-17 09:24:32,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.095238095238095) internal successors, (86), 22 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:32,199 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 865 transitions. [2023-02-17 09:24:32,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-17 09:24:32,201 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:32,201 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-17 09:24:32,212 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 09:24:32,405 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 09:24:32,406 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash 499781144, now seen corresponding path program 2 times [2023-02-17 09:24:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:32,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048583675] [2023-02-17 09:24:32,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:32,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:32,502 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:32,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:32,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048583675] [2023-02-17 09:24:32,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048583675] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:32,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397511232] [2023-02-17 09:24:32,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:24:32,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:32,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:32,505 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 09:24:32,507 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 09:24:32,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:24:32,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:32,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 09:24:32,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:32,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:32,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397511232] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:32,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:32,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-02-17 09:24:32,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759495667] [2023-02-17 09:24:32,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:32,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 09:24:32,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 09:24:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=745, Unknown=0, NotChecked=0, Total=992 [2023-02-17 09:24:32,718 INFO L87 Difference]: Start difference. First operand 715 states and 865 transitions. Second operand has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:33,465 INFO L93 Difference]: Finished difference Result 1329 states and 1575 transitions. [2023-02-17 09:24:33,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-17 09:24:33,465 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-17 09:24:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:33,468 INFO L225 Difference]: With dead ends: 1329 [2023-02-17 09:24:33,468 INFO L226 Difference]: Without dead ends: 1328 [2023-02-17 09:24:33,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1319, Invalid=2841, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 09:24:33,470 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 522 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:33,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 106 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 09:24:33,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1328 states. [2023-02-17 09:24:33,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1328 to 886. [2023-02-17 09:24:33,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 883 states have (on average 1.2095130237825595) internal successors, (1068), 885 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1068 transitions. [2023-02-17 09:24:33,498 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1068 transitions. Word has length 33 [2023-02-17 09:24:33,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:33,498 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1068 transitions. [2023-02-17 09:24:33,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.064516129032258) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:33,499 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1068 transitions. [2023-02-17 09:24:33,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-17 09:24:33,499 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:33,499 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-02-17 09:24:33,506 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 09:24:33,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:33,704 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:33,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:33,704 INFO L85 PathProgramCache]: Analyzing trace with hash -746656358, now seen corresponding path program 1 times [2023-02-17 09:24:33,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:33,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829315696] [2023-02-17 09:24:33,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:33,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:33,737 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-17 09:24:33,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:33,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829315696] [2023-02-17 09:24:33,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829315696] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:33,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311432073] [2023-02-17 09:24:33,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:33,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:33,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:33,739 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 09:24:33,746 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 09:24:33,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:33,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 09:24:33,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:33,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:33,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:33,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311432073] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:33,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:33,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 23 [2023-02-17 09:24:33,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408670833] [2023-02-17 09:24:33,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:33,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-17 09:24:33,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:33,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-17 09:24:33,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-02-17 09:24:33,907 INFO L87 Difference]: Start difference. First operand 886 states and 1068 transitions. Second operand has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,396 INFO L93 Difference]: Finished difference Result 2398 states and 2877 transitions. [2023-02-17 09:24:34,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-17 09:24:34,397 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-17 09:24:34,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,402 INFO L225 Difference]: With dead ends: 2398 [2023-02-17 09:24:34,402 INFO L226 Difference]: Without dead ends: 2197 [2023-02-17 09:24:34,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=776, Invalid=1876, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 09:24:34,406 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 254 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 90 Invalid, 812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 09:24:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2023-02-17 09:24:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 445. [2023-02-17 09:24:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 443 states have (on average 1.18510158013544) internal successors, (525), 444 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 525 transitions. [2023-02-17 09:24:34,436 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 525 transitions. Word has length 35 [2023-02-17 09:24:34,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:34,436 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 525 transitions. [2023-02-17 09:24:34,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.652173913043478) internal successors, (84), 24 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,437 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 525 transitions. [2023-02-17 09:24:34,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 09:24:34,438 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:34,438 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:24:34,445 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-17 09:24:34,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:34,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1457588718, now seen corresponding path program 2 times [2023-02-17 09:24:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:34,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46024341] [2023-02-17 09:24:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:34,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46024341] [2023-02-17 09:24:34,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46024341] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:34,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680215746] [2023-02-17 09:24:34,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:24:34,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:34,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:34,689 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 09:24:34,691 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 09:24:34,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:24:34,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:34,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 09:24:34,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:34,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680215746] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:34,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:34,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-17 09:24:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849459666] [2023-02-17 09:24:34,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:34,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 09:24:34,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 09:24:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-17 09:24:34,785 INFO L87 Difference]: Start difference. First operand 445 states and 525 transitions. Second operand has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:34,932 INFO L93 Difference]: Finished difference Result 1706 states and 2070 transitions. [2023-02-17 09:24:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-17 09:24:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-02-17 09:24:34,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:34,936 INFO L225 Difference]: With dead ends: 1706 [2023-02-17 09:24:34,936 INFO L226 Difference]: Without dead ends: 1705 [2023-02-17 09:24:34,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 63 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2023-02-17 09:24:34,937 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 178 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:34,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 84 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:24:34,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-02-17 09:24:34,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1203. [2023-02-17 09:24:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1201 states have (on average 1.1740216486261448) internal successors, (1410), 1202 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1410 transitions. [2023-02-17 09:24:35,000 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1410 transitions. Word has length 39 [2023-02-17 09:24:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:35,000 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1410 transitions. [2023-02-17 09:24:35,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.066666666666666) internal successors, (76), 16 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1410 transitions. [2023-02-17 09:24:35,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 09:24:35,001 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:35,001 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-02-17 09:24:35,015 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 09:24:35,213 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,SelfDestructingSolverStorable15 [2023-02-17 09:24:35,214 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:35,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:35,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1726793311, now seen corresponding path program 3 times [2023-02-17 09:24:35,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:35,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102580635] [2023-02-17 09:24:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:35,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102580635] [2023-02-17 09:24:35,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102580635] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:35,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573882089] [2023-02-17 09:24:35,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:24:35,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:35,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:35,324 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 09:24:35,327 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 09:24:35,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-17 09:24:35,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:35,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-17 09:24:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:35,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573882089] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:35,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:35,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 36 [2023-02-17 09:24:35,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697241778] [2023-02-17 09:24:35,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:35,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-17 09:24:35,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:35,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-17 09:24:35,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 09:24:35,574 INFO L87 Difference]: Start difference. First operand 1203 states and 1410 transitions. Second operand has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:38,900 INFO L93 Difference]: Finished difference Result 10558 states and 12329 transitions. [2023-02-17 09:24:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2023-02-17 09:24:38,900 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2023-02-17 09:24:38,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:38,921 INFO L225 Difference]: With dead ends: 10558 [2023-02-17 09:24:38,922 INFO L226 Difference]: Without dead ends: 10557 [2023-02-17 09:24:38,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26217 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=12057, Invalid=43403, Unknown=0, NotChecked=0, Total=55460 [2023-02-17 09:24:38,931 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 901 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 902 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:38,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 43 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 902 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 09:24:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10557 states. [2023-02-17 09:24:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10557 to 3947. [2023-02-17 09:24:39,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3945 states have (on average 1.1842839036755386) internal successors, (4672), 3946 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4672 transitions. [2023-02-17 09:24:39,318 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4672 transitions. Word has length 46 [2023-02-17 09:24:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:39,318 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4672 transitions. [2023-02-17 09:24:39,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 3.7222222222222223) internal successors, (134), 37 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:39,318 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4672 transitions. [2023-02-17 09:24:39,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-17 09:24:39,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:39,319 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2023-02-17 09:24:39,326 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 09:24:39,524 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,SelfDestructingSolverStorable16 [2023-02-17 09:24:39,524 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:39,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2065951787, now seen corresponding path program 4 times [2023-02-17 09:24:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:39,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215615658] [2023-02-17 09:24:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:39,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215615658] [2023-02-17 09:24:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215615658] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:39,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142424189] [2023-02-17 09:24:39,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:24:39,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:39,721 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 09:24:39,738 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 09:24:39,755 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:24:39,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 09:24:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:40,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:40,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142424189] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:40,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:40,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2023-02-17 09:24:40,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10812280] [2023-02-17 09:24:40,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:40,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-02-17 09:24:40,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-02-17 09:24:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=549, Invalid=2873, Unknown=0, NotChecked=0, Total=3422 [2023-02-17 09:24:40,386 INFO L87 Difference]: Start difference. First operand 3947 states and 4672 transitions. Second operand has 59 states, 58 states have (on average 3.0344827586206895) internal successors, (176), 59 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:24:53,790 INFO L93 Difference]: Finished difference Result 22171 states and 25827 transitions. [2023-02-17 09:24:53,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 411 states. [2023-02-17 09:24:53,790 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.0344827586206895) internal successors, (176), 59 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2023-02-17 09:24:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:24:53,828 INFO L225 Difference]: With dead ends: 22171 [2023-02-17 09:24:53,828 INFO L226 Difference]: Without dead ends: 22170 [2023-02-17 09:24:53,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 453 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111947 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=58942, Invalid=147628, Unknown=0, NotChecked=0, Total=206570 [2023-02-17 09:24:53,846 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2112 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4943 mSolverCounterSat, 755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2112 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 5698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 755 IncrementalHoareTripleChecker+Valid, 4943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:24:53,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2112 Valid, 74 Invalid, 5698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [755 Valid, 4943 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 09:24:53,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22170 states. [2023-02-17 09:24:55,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22170 to 11709. [2023-02-17 09:24:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11709 states, 11707 states have (on average 1.184590415990433) internal successors, (13868), 11708 states have internal predecessors, (13868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11709 states to 11709 states and 13868 transitions. [2023-02-17 09:24:55,299 INFO L78 Accepts]: Start accepts. Automaton has 11709 states and 13868 transitions. Word has length 60 [2023-02-17 09:24:55,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:24:55,300 INFO L495 AbstractCegarLoop]: Abstraction has 11709 states and 13868 transitions. [2023-02-17 09:24:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.0344827586206895) internal successors, (176), 59 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:24:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 11709 states and 13868 transitions. [2023-02-17 09:24:55,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-17 09:24:55,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:24:55,303 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2023-02-17 09:24:55,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-17 09:24:55,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-17 09:24:55,508 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:24:55,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:24:55,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1453726494, now seen corresponding path program 5 times [2023-02-17 09:24:55,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:24:55,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390329489] [2023-02-17 09:24:55,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:24:55,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:24:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:24:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:24:55,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:24:55,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390329489] [2023-02-17 09:24:55,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390329489] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:24:55,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532583271] [2023-02-17 09:24:55,690 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:24:55,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:24:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:24:55,692 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 09:24:55,694 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 09:24:55,724 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-17 09:24:55,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:24:55,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 09:24:55,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:24:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-17 09:24:55,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:24:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-17 09:24:55,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532583271] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:24:55,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:24:55,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 11] total 38 [2023-02-17 09:24:55,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849760711] [2023-02-17 09:24:55,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:24:55,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-17 09:24:55,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:24:55,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-17 09:24:55,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1222, Unknown=0, NotChecked=0, Total=1406 [2023-02-17 09:24:55,958 INFO L87 Difference]: Start difference. First operand 11709 states and 13868 transitions. Second operand has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:00,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:00,148 INFO L93 Difference]: Finished difference Result 25651 states and 30289 transitions. [2023-02-17 09:25:00,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2023-02-17 09:25:00,149 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-17 09:25:00,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:00,150 INFO L225 Difference]: With dead ends: 25651 [2023-02-17 09:25:00,150 INFO L226 Difference]: Without dead ends: 642 [2023-02-17 09:25:00,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 234 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22632 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=8533, Invalid=46927, Unknown=0, NotChecked=0, Total=55460 [2023-02-17 09:25:00,178 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 765 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:00,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 21 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-17 09:25:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-02-17 09:25:00,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 167. [2023-02-17 09:25:00,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.103030303030303) internal successors, (182), 166 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:00,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2023-02-17 09:25:00,215 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 62 [2023-02-17 09:25:00,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:00,215 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2023-02-17 09:25:00,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.0789473684210527) internal successors, (117), 38 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:00,215 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2023-02-17 09:25:00,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-17 09:25:00,216 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:00,216 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2023-02-17 09:25:00,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-17 09:25:00,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:00,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash 727673482, now seen corresponding path program 6 times [2023-02-17 09:25:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:00,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447925670] [2023-02-17 09:25:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:00,596 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:00,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:00,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447925670] [2023-02-17 09:25:00,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447925670] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:00,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638991983] [2023-02-17 09:25:00,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:25:00,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:00,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:00,598 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:00,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 09:25:00,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2023-02-17 09:25:00,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:00,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 09:25:00,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:00,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:01,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638991983] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:01,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:01,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 50 [2023-02-17 09:25:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258409153] [2023-02-17 09:25:01,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-17 09:25:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:01,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-17 09:25:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=1997, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 09:25:01,036 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:02,561 INFO L93 Difference]: Finished difference Result 436 states and 458 transitions. [2023-02-17 09:25:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-02-17 09:25:02,562 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-02-17 09:25:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:02,562 INFO L225 Difference]: With dead ends: 436 [2023-02-17 09:25:02,562 INFO L226 Difference]: Without dead ends: 435 [2023-02-17 09:25:02,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7751 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=5282, Invalid=14458, Unknown=0, NotChecked=0, Total=19740 [2023-02-17 09:25:02,565 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 802 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 66 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 09:25:02,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-02-17 09:25:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 183. [2023-02-17 09:25:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 181 states have (on average 1.1160220994475138) internal successors, (202), 182 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2023-02-17 09:25:02,612 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 62 [2023-02-17 09:25:02,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:02,612 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2023-02-17 09:25:02,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.64) internal successors, (182), 51 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:02,612 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2023-02-17 09:25:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-17 09:25:02,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:02,613 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1] [2023-02-17 09:25:02,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:02,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:02,818 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:02,818 INFO L85 PathProgramCache]: Analyzing trace with hash -362593675, now seen corresponding path program 7 times [2023-02-17 09:25:02,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383350893] [2023-02-17 09:25:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:02,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:03,060 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:03,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:03,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383350893] [2023-02-17 09:25:03,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383350893] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:03,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792858865] [2023-02-17 09:25:03,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 09:25:03,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:03,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:03,061 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:03,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 09:25:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:03,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-17 09:25:03,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:03,429 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:03,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:03,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792858865] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:03,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:03,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 82 [2023-02-17 09:25:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613513064] [2023-02-17 09:25:03,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:03,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2023-02-17 09:25:03,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2023-02-17 09:25:03,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1369, Invalid=5437, Unknown=0, NotChecked=0, Total=6806 [2023-02-17 09:25:03,948 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 83 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:14,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:14,103 INFO L93 Difference]: Finished difference Result 1102 states and 1145 transitions. [2023-02-17 09:25:14,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2023-02-17 09:25:14,103 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 83 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-02-17 09:25:14,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:14,104 INFO L225 Difference]: With dead ends: 1102 [2023-02-17 09:25:14,104 INFO L226 Difference]: Without dead ends: 1101 [2023-02-17 09:25:14,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65151 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=30991, Invalid=116081, Unknown=0, NotChecked=0, Total=147072 [2023-02-17 09:25:14,112 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2863 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 6129 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 6845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 6129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:14,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 25 Invalid, 6845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 6129 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 09:25:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2023-02-17 09:25:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 212. [2023-02-17 09:25:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.138095238095238) internal successors, (239), 211 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 239 transitions. [2023-02-17 09:25:14,171 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 239 transitions. Word has length 78 [2023-02-17 09:25:14,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:14,172 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 239 transitions. [2023-02-17 09:25:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.8048780487804876) internal successors, (230), 83 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 239 transitions. [2023-02-17 09:25:14,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-17 09:25:14,172 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:14,172 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 09:25:14,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:14,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-17 09:25:14,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:14,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1221737874, now seen corresponding path program 3 times [2023-02-17 09:25:14,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:14,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796820682] [2023-02-17 09:25:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:14,502 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:14,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796820682] [2023-02-17 09:25:14,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796820682] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:14,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067588796] [2023-02-17 09:25:14,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:25:14,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:14,504 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:14,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 09:25:14,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-17 09:25:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-17 09:25:14,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:14,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:14,822 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:14,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067588796] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:14,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:14,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2023-02-17 09:25:14,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333626747] [2023-02-17 09:25:14,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:14,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 09:25:14,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:14,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 09:25:14,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-17 09:25:14,825 INFO L87 Difference]: Start difference. First operand 212 states and 239 transitions. Second operand has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:15,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:15,385 INFO L93 Difference]: Finished difference Result 923 states and 975 transitions. [2023-02-17 09:25:15,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-17 09:25:15,386 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-02-17 09:25:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:15,387 INFO L225 Difference]: With dead ends: 923 [2023-02-17 09:25:15,387 INFO L226 Difference]: Without dead ends: 922 [2023-02-17 09:25:15,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 127 SyntacticMatches, 16 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2023-02-17 09:25:15,388 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 484 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:15,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 162 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 09:25:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2023-02-17 09:25:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 269. [2023-02-17 09:25:15,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 267 states have (on average 1.1348314606741574) internal successors, (303), 268 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 303 transitions. [2023-02-17 09:25:15,450 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 303 transitions. Word has length 79 [2023-02-17 09:25:15,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:15,450 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 303 transitions. [2023-02-17 09:25:15,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.032258064516129) internal successors, (156), 32 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 303 transitions. [2023-02-17 09:25:15,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-02-17 09:25:15,451 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:15,451 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:25:15,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:15,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:15,651 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash 67283252, now seen corresponding path program 8 times [2023-02-17 09:25:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:15,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216464902] [2023-02-17 09:25:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:15,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:15,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:15,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216464902] [2023-02-17 09:25:15,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216464902] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:15,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931468804] [2023-02-17 09:25:15,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:25:15,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:15,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:15,900 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:15,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 09:25:15,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:25:15,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:15,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 09:25:15,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:16,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:16,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931468804] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:16,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:16,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 34, 21] total 74 [2023-02-17 09:25:16,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38459014] [2023-02-17 09:25:16,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:16,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-02-17 09:25:16,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:16,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-02-17 09:25:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1360, Invalid=4190, Unknown=0, NotChecked=0, Total=5550 [2023-02-17 09:25:16,849 INFO L87 Difference]: Start difference. First operand 269 states and 303 transitions. Second operand has 75 states, 74 states have (on average 3.5945945945945947) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:26,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:26,334 INFO L93 Difference]: Finished difference Result 1584 states and 1631 transitions. [2023-02-17 09:25:26,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 291 states. [2023-02-17 09:25:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 3.5945945945945947) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2023-02-17 09:25:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:26,336 INFO L225 Difference]: With dead ends: 1584 [2023-02-17 09:25:26,336 INFO L226 Difference]: Without dead ends: 1583 [2023-02-17 09:25:26,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 120 SyntacticMatches, 19 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50700 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=20482, Invalid=100274, Unknown=0, NotChecked=0, Total=120756 [2023-02-17 09:25:26,345 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 3471 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 12252 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 12956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 12252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:26,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 678 Invalid, 12956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 12252 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-02-17 09:25:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2023-02-17 09:25:26,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 264. [2023-02-17 09:25:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.133587786259542) internal successors, (297), 263 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 297 transitions. [2023-02-17 09:25:26,415 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 297 transitions. Word has length 90 [2023-02-17 09:25:26,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:26,415 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 297 transitions. [2023-02-17 09:25:26,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 3.5945945945945947) internal successors, (266), 75 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 297 transitions. [2023-02-17 09:25:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-02-17 09:25:26,416 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:26,416 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2023-02-17 09:25:26,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:26,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:26,621 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:26,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:26,621 INFO L85 PathProgramCache]: Analyzing trace with hash 698004038, now seen corresponding path program 3 times [2023-02-17 09:25:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:26,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621345578] [2023-02-17 09:25:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:27,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621345578] [2023-02-17 09:25:27,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621345578] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372610871] [2023-02-17 09:25:27,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:25:27,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:27,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:27,004 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:27,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 09:25:27,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-17 09:25:27,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:27,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-17 09:25:27,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:27,757 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:27,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:28,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372610871] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:28,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:28,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 91 [2023-02-17 09:25:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233228656] [2023-02-17 09:25:28,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:28,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-02-17 09:25:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-02-17 09:25:28,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1637, Invalid=6735, Unknown=0, NotChecked=0, Total=8372 [2023-02-17 09:25:28,520 INFO L87 Difference]: Start difference. First operand 264 states and 297 transitions. Second operand has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:32,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:32,913 INFO L93 Difference]: Finished difference Result 655 states and 703 transitions. [2023-02-17 09:25:32,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-02-17 09:25:32,913 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2023-02-17 09:25:32,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:32,914 INFO L225 Difference]: With dead ends: 655 [2023-02-17 09:25:32,914 INFO L226 Difference]: Without dead ends: 654 [2023-02-17 09:25:32,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10731 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=8689, Invalid=21761, Unknown=0, NotChecked=0, Total=30450 [2023-02-17 09:25:32,916 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 539 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 3481 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 3732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:32,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 218 Invalid, 3732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 3481 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-17 09:25:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-02-17 09:25:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 360. [2023-02-17 09:25:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 358 states have (on average 1.0977653631284916) internal successors, (393), 359 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 393 transitions. [2023-02-17 09:25:33,107 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 393 transitions. Word has length 93 [2023-02-17 09:25:33,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:33,107 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 393 transitions. [2023-02-17 09:25:33,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 3.021978021978022) internal successors, (275), 92 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:33,107 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 393 transitions. [2023-02-17 09:25:33,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-17 09:25:33,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:33,108 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2023-02-17 09:25:33,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:33,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-02-17 09:25:33,312 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:33,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:33,314 INFO L85 PathProgramCache]: Analyzing trace with hash 873996727, now seen corresponding path program 9 times [2023-02-17 09:25:33,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:33,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102401531] [2023-02-17 09:25:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:33,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:33,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102401531] [2023-02-17 09:25:33,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102401531] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:33,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370840469] [2023-02-17 09:25:33,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:25:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:33,647 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:33,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 09:25:33,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-17 09:25:33,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:33,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 09:25:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:34,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370840469] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:35,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:35,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 94 [2023-02-17 09:25:35,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557121958] [2023-02-17 09:25:35,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:35,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-02-17 09:25:35,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-02-17 09:25:35,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1279, Invalid=7651, Unknown=0, NotChecked=0, Total=8930 [2023-02-17 09:25:35,123 INFO L87 Difference]: Start difference. First operand 360 states and 393 transitions. Second operand has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:25:52,363 INFO L93 Difference]: Finished difference Result 1386 states and 1447 transitions. [2023-02-17 09:25:52,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 352 states. [2023-02-17 09:25:52,363 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-02-17 09:25:52,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:25:52,365 INFO L225 Difference]: With dead ends: 1386 [2023-02-17 09:25:52,365 INFO L226 Difference]: Without dead ends: 1385 [2023-02-17 09:25:52,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 423 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74945 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=38066, Invalid=142134, Unknown=0, NotChecked=0, Total=180200 [2023-02-17 09:25:52,373 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3010 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 8133 mSolverCounterSat, 696 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3010 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 8829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 696 IncrementalHoareTripleChecker+Valid, 8133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-17 09:25:52,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3010 Valid, 55 Invalid, 8829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [696 Valid, 8133 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-17 09:25:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2023-02-17 09:25:52,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 396. [2023-02-17 09:25:52,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 394 states have (on average 1.0888324873096447) internal successors, (429), 395 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 429 transitions. [2023-02-17 09:25:52,700 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 429 transitions. Word has length 94 [2023-02-17 09:25:52,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:25:52,700 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 429 transitions. [2023-02-17 09:25:52,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 94 states have (on average 2.9574468085106385) internal successors, (278), 95 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:25:52,700 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 429 transitions. [2023-02-17 09:25:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-02-17 09:25:52,701 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:25:52,701 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1] [2023-02-17 09:25:52,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 09:25:52,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:52,905 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:25:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:25:52,906 INFO L85 PathProgramCache]: Analyzing trace with hash -718111200, now seen corresponding path program 10 times [2023-02-17 09:25:52,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:25:52,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903653668] [2023-02-17 09:25:52,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:25:52,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:25:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:25:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:25:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903653668] [2023-02-17 09:25:53,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903653668] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:25:53,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310251440] [2023-02-17 09:25:53,214 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 09:25:53,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:25:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:25:53,215 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:25:53,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 09:25:53,248 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 09:25:53,248 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:25:53,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 09:25:53,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:25:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:53,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:25:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:25:54,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310251440] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:25:54,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:25:54,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 100 [2023-02-17 09:25:54,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763778362] [2023-02-17 09:25:54,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:25:54,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2023-02-17 09:25:54,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:25:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2023-02-17 09:25:54,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2012, Invalid=8088, Unknown=0, NotChecked=0, Total=10100 [2023-02-17 09:25:54,441 INFO L87 Difference]: Start difference. First operand 396 states and 429 transitions. Second operand has 101 states, 100 states have (on average 2.78) internal successors, (278), 101 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:26:14,895 INFO L93 Difference]: Finished difference Result 1965 states and 2018 transitions. [2023-02-17 09:26:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 445 states. [2023-02-17 09:26:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 100 states have (on average 2.78) internal successors, (278), 101 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2023-02-17 09:26:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:26:14,897 INFO L225 Difference]: With dead ends: 1965 [2023-02-17 09:26:14,897 INFO L226 Difference]: Without dead ends: 1964 [2023-02-17 09:26:14,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 526 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127083 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=57720, Invalid=220536, Unknown=0, NotChecked=0, Total=278256 [2023-02-17 09:26:14,937 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4820 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 9581 mSolverCounterSat, 1135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 10716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1135 IncrementalHoareTripleChecker+Valid, 9581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-17 09:26:14,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4820 Valid, 26 Invalid, 10716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1135 Valid, 9581 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-02-17 09:26:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2023-02-17 09:26:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 380. [2023-02-17 09:26:15,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 378 states have (on average 1.097883597883598) internal successors, (415), 379 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:15,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 415 transitions. [2023-02-17 09:26:15,254 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 415 transitions. Word has length 94 [2023-02-17 09:26:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:26:15,255 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 415 transitions. [2023-02-17 09:26:15,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 100 states have (on average 2.78) internal successors, (278), 101 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:15,255 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 415 transitions. [2023-02-17 09:26:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-17 09:26:15,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:26:15,256 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 16, 16, 16, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-02-17 09:26:15,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-17 09:26:15,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:26:15,457 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:26:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:26:15,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1807094974, now seen corresponding path program 11 times [2023-02-17 09:26:15,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:26:15,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913362322] [2023-02-17 09:26:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:26:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:26:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:26:15,809 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:15,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:26:15,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913362322] [2023-02-17 09:26:15,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913362322] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:26:15,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319479907] [2023-02-17 09:26:15,810 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 09:26:15,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:26:15,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:26:15,811 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:26:15,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 09:26:15,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2023-02-17 09:26:15,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:26:15,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 09:26:15,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:26:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:16,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:26:17,052 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:17,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319479907] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:26:17,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:26:17,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 112 [2023-02-17 09:26:17,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507098116] [2023-02-17 09:26:17,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:26:17,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2023-02-17 09:26:17,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:26:17,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2023-02-17 09:26:17,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3678, Invalid=8978, Unknown=0, NotChecked=0, Total=12656 [2023-02-17 09:26:17,056 INFO L87 Difference]: Start difference. First operand 380 states and 415 transitions. Second operand has 113 states, 112 states have (on average 2.669642857142857) internal successors, (299), 113 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:36,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:26:36,690 INFO L93 Difference]: Finished difference Result 2446 states and 2501 transitions. [2023-02-17 09:26:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 414 states. [2023-02-17 09:26:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.669642857142857) internal successors, (299), 113 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2023-02-17 09:26:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:26:36,693 INFO L225 Difference]: With dead ends: 2446 [2023-02-17 09:26:36,693 INFO L226 Difference]: Without dead ends: 2445 [2023-02-17 09:26:36,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 126 SyntacticMatches, 2 SemanticMatches, 496 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105458 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=47226, Invalid=200280, Unknown=0, NotChecked=0, Total=247506 [2023-02-17 09:26:36,703 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 5290 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 17937 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5290 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 19012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 17937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-17 09:26:36,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5290 Valid, 618 Invalid, 19012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 17937 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-02-17 09:26:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2023-02-17 09:26:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 376. [2023-02-17 09:26:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 1.1042780748663101) internal successors, (413), 375 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 413 transitions. [2023-02-17 09:26:37,027 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 413 transitions. Word has length 101 [2023-02-17 09:26:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:26:37,027 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 413 transitions. [2023-02-17 09:26:37,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.669642857142857) internal successors, (299), 113 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 413 transitions. [2023-02-17 09:26:37,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-02-17 09:26:37,028 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:26:37,028 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2023-02-17 09:26:37,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-17 09:26:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:26:37,229 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:26:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:26:37,230 INFO L85 PathProgramCache]: Analyzing trace with hash -190624373, now seen corresponding path program 12 times [2023-02-17 09:26:37,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:26:37,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406250808] [2023-02-17 09:26:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:26:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:26:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:26:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:37,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:26:37,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406250808] [2023-02-17 09:26:37,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406250808] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:26:37,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683400767] [2023-02-17 09:26:37,595 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 09:26:37,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:26:37,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:26:37,596 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:26:37,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 09:26:37,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2023-02-17 09:26:37,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:26:37,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-17 09:26:37,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:26:38,129 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:38,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:26:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 0 proven. 607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:38,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683400767] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:26:38,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:26:38,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 29, 29] total 96 [2023-02-17 09:26:38,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579316784] [2023-02-17 09:26:38,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:26:38,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-17 09:26:38,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:26:38,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-17 09:26:38,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=7480, Unknown=0, NotChecked=0, Total=9312 [2023-02-17 09:26:38,784 INFO L87 Difference]: Start difference. First operand 376 states and 413 transitions. Second operand has 97 states, 96 states have (on average 3.3958333333333335) internal successors, (326), 97 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:52,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:26:52,871 INFO L93 Difference]: Finished difference Result 1510 states and 1562 transitions. [2023-02-17 09:26:52,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2023-02-17 09:26:52,872 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 3.3958333333333335) internal successors, (326), 97 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-02-17 09:26:52,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:26:52,873 INFO L225 Difference]: With dead ends: 1510 [2023-02-17 09:26:52,873 INFO L226 Difference]: Without dead ends: 1509 [2023-02-17 09:26:52,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 386 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64552 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=37403, Invalid=112753, Unknown=0, NotChecked=0, Total=150156 [2023-02-17 09:26:52,881 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3504 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 1030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3504 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:26:52,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3504 Valid, 101 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1030 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 09:26:52,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2023-02-17 09:26:53,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 382. [2023-02-17 09:26:53,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 380 states have (on average 1.105263157894737) internal successors, (420), 381 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 420 transitions. [2023-02-17 09:26:53,285 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 420 transitions. Word has length 110 [2023-02-17 09:26:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:26:53,285 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 420 transitions. [2023-02-17 09:26:53,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 3.3958333333333335) internal successors, (326), 97 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:26:53,285 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 420 transitions. [2023-02-17 09:26:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-02-17 09:26:53,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:26:53,286 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1] [2023-02-17 09:26:53,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-02-17 09:26:53,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-02-17 09:26:53,491 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:26:53,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:26:53,491 INFO L85 PathProgramCache]: Analyzing trace with hash 69722294, now seen corresponding path program 13 times [2023-02-17 09:26:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:26:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077946195] [2023-02-17 09:26:53,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:26:53,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:26:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:26:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:54,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:26:54,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077946195] [2023-02-17 09:26:54,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077946195] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:26:54,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709024133] [2023-02-17 09:26:54,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 09:26:54,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:26:54,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:26:54,018 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:26:54,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-17 09:26:54,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:26:54,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-17 09:26:54,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:26:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:54,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:26:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:26:56,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709024133] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:26:56,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:26:56,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 136 [2023-02-17 09:26:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600502101] [2023-02-17 09:26:56,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:26:56,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2023-02-17 09:26:56,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:26:56,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2023-02-17 09:26:56,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3670, Invalid=14962, Unknown=0, NotChecked=0, Total=18632 [2023-02-17 09:26:56,182 INFO L87 Difference]: Start difference. First operand 382 states and 420 transitions. Second operand has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:27:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:27:53,081 INFO L93 Difference]: Finished difference Result 2781 states and 2853 transitions. [2023-02-17 09:27:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 775 states. [2023-02-17 09:27:53,081 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2023-02-17 09:27:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 09:27:53,086 INFO L225 Difference]: With dead ends: 2781 [2023-02-17 09:27:53,087 INFO L226 Difference]: Without dead ends: 2780 [2023-02-17 09:27:53,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1048 GetRequests, 160 SyntacticMatches, 2 SemanticMatches, 886 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376816 ImplicationChecksByTransitivity, 40.9s TimeCoverageRelationStatistics Valid=155768, Invalid=631888, Unknown=0, NotChecked=0, Total=787656 [2023-02-17 09:27:53,125 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 10782 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19679 mSolverCounterSat, 2637 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10782 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 22316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2637 IncrementalHoareTripleChecker+Valid, 19679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2023-02-17 09:27:53,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10782 Valid, 31 Invalid, 22316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2637 Valid, 19679 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2023-02-17 09:27:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2023-02-17 09:27:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 414. [2023-02-17 09:27:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.104368932038835) internal successors, (455), 413 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:27:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 455 transitions. [2023-02-17 09:27:53,746 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 455 transitions. Word has length 126 [2023-02-17 09:27:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 09:27:53,747 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 455 transitions. [2023-02-17 09:27:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 136 states have (on average 2.75) internal successors, (374), 137 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:27:53,747 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 455 transitions. [2023-02-17 09:27:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-02-17 09:27:53,747 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 09:27:53,748 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2023-02-17 09:27:53,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-02-17 09:27:53,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-02-17 09:27:53,948 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-02-17 09:27:53,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:27:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1421333913, now seen corresponding path program 14 times [2023-02-17 09:27:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:27:53,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683871189] [2023-02-17 09:27:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:27:53,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:27:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:27:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 1040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:27:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:27:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683871189] [2023-02-17 09:27:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683871189] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:27:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154949468] [2023-02-17 09:27:54,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 09:27:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:27:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:27:54,656 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:27:54,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-17 09:27:54,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 09:27:54,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:27:54,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-17 09:27:54,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:27:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 1040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:27:56,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:27:57,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 1040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:27:57,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154949468] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:27:57,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:27:57,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 142 [2023-02-17 09:27:57,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090576011] [2023-02-17 09:27:57,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:27:57,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2023-02-17 09:27:57,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:27:57,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2023-02-17 09:27:57,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2735, Invalid=17571, Unknown=0, NotChecked=0, Total=20306 [2023-02-17 09:27:57,872 INFO L87 Difference]: Start difference. First operand 414 states and 455 transitions. Second operand has 143 states, 142 states have (on average 2.9295774647887325) internal successors, (416), 143 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)