./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 3dbbec33 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 14:26:55,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 14:26:55,372 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 14:26:55,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 14:26:55,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 14:26:55,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 14:26:55,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 14:26:55,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 14:26:55,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 14:26:55,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 14:26:55,403 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 14:26:55,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 14:26:55,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 14:26:55,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 14:26:55,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 14:26:55,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 14:26:55,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 14:26:55,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 14:26:55,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 14:26:55,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 14:26:55,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 14:26:55,413 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 14:26:55,414 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 14:26:55,415 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 14:26:55,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 14:26:55,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 14:26:55,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 14:26:55,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 14:26:55,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 14:26:55,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 14:26:55,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 14:26:55,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 14:26:55,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 14:26:55,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 14:26:55,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 14:26:55,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 14:26:55,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 14:26:55,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 14:26:55,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 14:26:55,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 14:26:55,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 14:26:55,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-14 14:26:55,448 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 14:26:55,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 14:26:55,449 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 14:26:55,449 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 14:26:55,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 14:26:55,450 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 14:26:55,450 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 14:26:55,450 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 14:26:55,450 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 14:26:55,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 14:26:55,451 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 14:26:55,451 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 14:26:55,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 14:26:55,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 14:26:55,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 14:26:55,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 14:26:55,453 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 14:26:55,453 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 14:26:55,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:26:55,453 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 14:26:55,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 14:26:55,455 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 14:26:55,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 14:26:55,455 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 14:26:55,455 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2023-02-14 14:26:55,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 14:26:55,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 14:26:55,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 14:26:55,737 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 14:26:55,737 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 14:26:55,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-14 14:26:56,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 14:26:57,055 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 14:26:57,055 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-14 14:26:57,060 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ab8f001/42dcc60abe8349acacc89444ae63ebbe/FLAG6399605be [2023-02-14 14:26:57,072 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ab8f001/42dcc60abe8349acacc89444ae63ebbe [2023-02-14 14:26:57,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 14:26:57,075 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 14:26:57,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 14:26:57,077 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 14:26:57,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 14:26:57,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f1fa55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57, skipping insertion in model container [2023-02-14 14:26:57,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 14:26:57,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 14:26:57,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:26:57,243 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 14:26:57,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 14:26:57,268 INFO L208 MainTranslator]: Completed translation [2023-02-14 14:26:57,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57 WrapperNode [2023-02-14 14:26:57,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 14:26:57,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 14:26:57,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 14:26:57,271 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 14:26:57,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,291 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-14 14:26:57,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 14:26:57,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 14:26:57,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 14:26:57,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 14:26:57,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,317 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 14:26:57,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 14:26:57,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 14:26:57,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 14:26:57,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (1/1) ... [2023-02-14 14:26:57,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 14:26:57,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:26:57,355 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) [2023-02-14 14:26:57,375 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 [2023-02-14 14:26:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-14 14:26:57,392 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-14 14:26:57,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 14:26:57,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 14:26:57,439 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 14:26:57,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 14:26:57,580 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 14:26:57,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 14:26:57,586 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 14:26:57,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:26:57 BoogieIcfgContainer [2023-02-14 14:26:57,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 14:26:57,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 14:26:57,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 14:26:57,592 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 14:26:57,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:26:57" (1/3) ... [2023-02-14 14:26:57,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb4666f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:26:57, skipping insertion in model container [2023-02-14 14:26:57,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:26:57" (2/3) ... [2023-02-14 14:26:57,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fb4666f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:26:57, skipping insertion in model container [2023-02-14 14:26:57,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:26:57" (3/3) ... [2023-02-14 14:26:57,595 INFO L112 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2023-02-14 14:26:57,609 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 14:26:57,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-02-14 14:26:57,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 14:26:57,654 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;@23974eb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 14:26:57,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-02-14 14:26:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 14:26:57,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 14:26:57,664 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:57,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:57,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:57,670 INFO L85 PathProgramCache]: Analyzing trace with hash 996822992, now seen corresponding path program 1 times [2023-02-14 14:26:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:57,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437124626] [2023-02-14 14:26:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:57,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:57,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:57,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437124626] [2023-02-14 14:26:57,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437124626] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:57,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:57,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:26:57,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225791625] [2023-02-14 14:26:57,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:57,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:26:57,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:26:57,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:26:57,894 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:57,976 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2023-02-14 14:26:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:26:57,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 14:26:57,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:57,985 INFO L225 Difference]: With dead ends: 64 [2023-02-14 14:26:57,986 INFO L226 Difference]: Without dead ends: 37 [2023-02-14 14:26:57,988 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 [2023-02-14 14:26:57,990 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:57,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 50 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:26:58,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-14 14:26:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2023-02-14 14:26:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 30 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-14 14:26:58,018 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 8 [2023-02-14 14:26:58,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,019 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-14 14:26:58,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,019 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-14 14:26:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-14 14:26:58,020 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 14:26:58,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 836741727, now seen corresponding path program 1 times [2023-02-14 14:26:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883944238] [2023-02-14 14:26:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883944238] [2023-02-14 14:26:58,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883944238] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:26:58,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821877968] [2023-02-14 14:26:58,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:26:58,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:26:58,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:26:58,063 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,091 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2023-02-14 14:26:58,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:26:58,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-14 14:26:58,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,093 INFO L225 Difference]: With dead ends: 56 [2023-02-14 14:26:58,093 INFO L226 Difference]: Without dead ends: 54 [2023-02-14 14:26:58,094 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 [2023-02-14 14:26:58,095 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 38 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-14 14:26:58,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-14 14:26:58,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 48 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2023-02-14 14:26:58,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 9 [2023-02-14 14:26:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,104 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2023-02-14 14:26:58,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2023-02-14 14:26:58,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 14:26:58,105 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,106 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 14:26:58,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,107 INFO L85 PathProgramCache]: Analyzing trace with hash 169143521, now seen corresponding path program 1 times [2023-02-14 14:26:58,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068878823] [2023-02-14 14:26:58,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068878823] [2023-02-14 14:26:58,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068878823] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:26:58,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858796933] [2023-02-14 14:26:58,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:58,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:58,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:26:58,183 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,237 INFO L93 Difference]: Finished difference Result 95 states and 134 transitions. [2023-02-14 14:26:58,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:26:58,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 14:26:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,240 INFO L225 Difference]: With dead ends: 95 [2023-02-14 14:26:58,240 INFO L226 Difference]: Without dead ends: 94 [2023-02-14 14:26:58,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:58,242 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 45 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 82 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-14 14:26:58,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2023-02-14 14:26:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.620253164556962) internal successors, (128), 85 states have internal predecessors, (128), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 130 transitions. [2023-02-14 14:26:58,257 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 130 transitions. Word has length 10 [2023-02-14 14:26:58,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,257 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 130 transitions. [2023-02-14 14:26:58,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 130 transitions. [2023-02-14 14:26:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 14:26:58,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 14:26:58,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash 169143170, now seen corresponding path program 1 times [2023-02-14 14:26:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846493888] [2023-02-14 14:26:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846493888] [2023-02-14 14:26:58,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846493888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:26:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315171295] [2023-02-14 14:26:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:58,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:26:58,315 INFO L87 Difference]: Start difference. First operand 88 states and 130 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,362 INFO L93 Difference]: Finished difference Result 98 states and 134 transitions. [2023-02-14 14:26:58,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:26:58,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 14:26:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,364 INFO L225 Difference]: With dead ends: 98 [2023-02-14 14:26:58,364 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 14:26:58,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:58,366 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 83 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 14:26:58,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2023-02-14 14:26:58,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 79 states have (on average 1.5696202531645569) internal successors, (124), 85 states have internal predecessors, (124), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 126 transitions. [2023-02-14 14:26:58,378 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 126 transitions. Word has length 10 [2023-02-14 14:26:58,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,379 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 126 transitions. [2023-02-14 14:26:58,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,379 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 126 transitions. [2023-02-14 14:26:58,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 14:26:58,380 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,380 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 14:26:58,381 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1417352704, now seen corresponding path program 1 times [2023-02-14 14:26:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255359655] [2023-02-14 14:26:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255359655] [2023-02-14 14:26:58,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255359655] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:26:58,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187989137] [2023-02-14 14:26:58,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:26:58,433 INFO L87 Difference]: Start difference. First operand 88 states and 126 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,464 INFO L93 Difference]: Finished difference Result 88 states and 126 transitions. [2023-02-14 14:26:58,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:26:58,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 14:26:58,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,466 INFO L225 Difference]: With dead ends: 88 [2023-02-14 14:26:58,466 INFO L226 Difference]: Without dead ends: 87 [2023-02-14 14:26:58,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:58,468 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 45 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 45 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-14 14:26:58,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-14 14:26:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 79 states have (on average 1.518987341772152) internal successors, (120), 84 states have internal predecessors, (120), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2023-02-14 14:26:58,479 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 10 [2023-02-14 14:26:58,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,480 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2023-02-14 14:26:58,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,480 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2023-02-14 14:26:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 14:26:58,481 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 14:26:58,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1417353055, now seen corresponding path program 1 times [2023-02-14 14:26:58,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256012994] [2023-02-14 14:26:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256012994] [2023-02-14 14:26:58,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256012994] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 14:26:58,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665778430] [2023-02-14 14:26:58,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:58,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 14:26:58,555 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,605 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2023-02-14 14:26:58,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:26:58,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 14:26:58,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,607 INFO L225 Difference]: With dead ends: 95 [2023-02-14 14:26:58,608 INFO L226 Difference]: Without dead ends: 94 [2023-02-14 14:26:58,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:58,609 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 45 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-14 14:26:58,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 48. [2023-02-14 14:26:58,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 46 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2023-02-14 14:26:58,617 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 10 [2023-02-14 14:26:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,617 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2023-02-14 14:26:58,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2023-02-14 14:26:58,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 14:26:58,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,618 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 14:26:58,618 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,620 INFO L85 PathProgramCache]: Analyzing trace with hash 948481931, now seen corresponding path program 1 times [2023-02-14 14:26:58,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267788383] [2023-02-14 14:26:58,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267788383] [2023-02-14 14:26:58,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267788383] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:26:58,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072191656] [2023-02-14 14:26:58,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 14:26:58,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:26:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:26:58,693 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,728 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-14 14:26:58,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:26:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-14 14:26:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,733 INFO L225 Difference]: With dead ends: 62 [2023-02-14 14:26:58,733 INFO L226 Difference]: Without dead ends: 61 [2023-02-14 14:26:58,733 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 [2023-02-14 14:26:58,736 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 35 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-14 14:26:58,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2023-02-14 14:26:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 54 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2023-02-14 14:26:58,757 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 11 [2023-02-14 14:26:58,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,758 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2023-02-14 14:26:58,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,758 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2023-02-14 14:26:58,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 14:26:58,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 14:26:58,760 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 948471040, now seen corresponding path program 1 times [2023-02-14 14:26:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041035356] [2023-02-14 14:26:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041035356] [2023-02-14 14:26:58,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041035356] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:58,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:26:58,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 14:26:58,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423578179] [2023-02-14 14:26:58,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:58,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 14:26:58,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:58,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 14:26:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 14:26:58,805 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:58,827 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2023-02-14 14:26:58,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 14:26:58,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-14 14:26:58,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:58,829 INFO L225 Difference]: With dead ends: 58 [2023-02-14 14:26:58,829 INFO L226 Difference]: Without dead ends: 57 [2023-02-14 14:26:58,829 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 [2023-02-14 14:26:58,830 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 36 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:58,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 35 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-14 14:26:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-02-14 14:26:58,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 54 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-02-14 14:26:58,837 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 11 [2023-02-14 14:26:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:58,837 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-02-14 14:26:58,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:58,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-02-14 14:26:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 14:26:58,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:58,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 14:26:58,839 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:58,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -617354162, now seen corresponding path program 1 times [2023-02-14 14:26:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593746487] [2023-02-14 14:26:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:58,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593746487] [2023-02-14 14:26:58,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593746487] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:26:58,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343241006] [2023-02-14 14:26:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:58,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:26:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:26:58,897 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) [2023-02-14 14:26:58,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 14:26:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:58,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:26:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:26:58,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:58,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:26:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:59,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343241006] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:26:59,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:26:59,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-14 14:26:59,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978975357] [2023-02-14 14:26:59,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:26:59,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 14:26:59,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:59,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 14:26:59,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 14:26:59,032 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:59,104 INFO L93 Difference]: Finished difference Result 132 states and 168 transitions. [2023-02-14 14:26:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:26:59,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-14 14:26:59,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:59,105 INFO L225 Difference]: With dead ends: 132 [2023-02-14 14:26:59,106 INFO L226 Difference]: Without dead ends: 130 [2023-02-14 14:26:59,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 14:26:59,108 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 54 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:59,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 73 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-14 14:26:59,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 65. [2023-02-14 14:26:59,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 63 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2023-02-14 14:26:59,132 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 12 [2023-02-14 14:26:59,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:59,132 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2023-02-14 14:26:59,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,133 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2023-02-14 14:26:59,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 14:26:59,135 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:59,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:59,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-14 14:26:59,341 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 [2023-02-14 14:26:59,342 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1583048475, now seen corresponding path program 1 times [2023-02-14 14:26:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:59,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69821689] [2023-02-14 14:26:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69821689] [2023-02-14 14:26:59,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69821689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:26:59,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089576945] [2023-02-14 14:26:59,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:26:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:26:59,389 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) [2023-02-14 14:26:59,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 14:26:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:59,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 14:26:59,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:26:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:59,503 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:26:59,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089576945] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:59,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 14:26:59,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-14 14:26:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933655329] [2023-02-14 14:26:59,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:59,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:59,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:59,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:59,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:59,506 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:59,543 INFO L93 Difference]: Finished difference Result 82 states and 104 transitions. [2023-02-14 14:26:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:26:59,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 14:26:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:59,544 INFO L225 Difference]: With dead ends: 82 [2023-02-14 14:26:59,545 INFO L226 Difference]: Without dead ends: 81 [2023-02-14 14:26:59,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-14 14:26:59,546 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:59,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 42 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:59,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-14 14:26:59,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 56. [2023-02-14 14:26:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.32) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2023-02-14 14:26:59,561 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 15 [2023-02-14 14:26:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:59,561 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2023-02-14 14:26:59,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,562 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2023-02-14 14:26:59,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-14 14:26:59,563 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:59,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:59,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 14:26:59,773 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 [2023-02-14 14:26:59,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:26:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:26:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash -951056633, now seen corresponding path program 1 times [2023-02-14 14:26:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:26:59,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128870803] [2023-02-14 14:26:59,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:26:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:26:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128870803] [2023-02-14 14:26:59,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128870803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:26:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150863239] [2023-02-14 14:26:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:26:59,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:26:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:26:59,832 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) [2023-02-14 14:26:59,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 14:26:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:26:59,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 14:26:59,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:26:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:26:59,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 14:26:59,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150863239] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:26:59,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 14:26:59,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-02-14 14:26:59,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480639976] [2023-02-14 14:26:59,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:26:59,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 14:26:59,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:26:59,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 14:26:59,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:26:59,949 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:26:59,977 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2023-02-14 14:26:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:26:59,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-14 14:26:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:26:59,979 INFO L225 Difference]: With dead ends: 56 [2023-02-14 14:26:59,979 INFO L226 Difference]: Without dead ends: 55 [2023-02-14 14:26:59,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-14 14:26:59,980 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:26:59,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 38 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:26:59,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-14 14:26:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-02-14 14:26:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2023-02-14 14:26:59,986 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 17 [2023-02-14 14:26:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:26:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2023-02-14 14:26:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:26:59,987 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2023-02-14 14:26:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 14:26:59,987 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:26:59,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:26:59,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:00,194 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 [2023-02-14 14:27:00,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:00,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash 582015517, now seen corresponding path program 1 times [2023-02-14 14:27:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:00,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779432173] [2023-02-14 14:27:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:00,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779432173] [2023-02-14 14:27:00,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779432173] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:00,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815703614] [2023-02-14 14:27:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:00,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:00,241 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) [2023-02-14 14:27:00,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 14:27:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:00,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:27:00,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:00,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:00,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:00,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815703614] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:00,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:00,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-14 14:27:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669017128] [2023-02-14 14:27:00,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:00,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 14:27:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 14:27:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 14:27:00,327 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:00,356 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2023-02-14 14:27:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 14:27:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 14:27:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:00,358 INFO L225 Difference]: With dead ends: 104 [2023-02-14 14:27:00,358 INFO L226 Difference]: Without dead ends: 103 [2023-02-14 14:27:00,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-02-14 14:27:00,359 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:00,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:27:00,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-14 14:27:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-02-14 14:27:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 101 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2023-02-14 14:27:00,373 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 18 [2023-02-14 14:27:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:00,374 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2023-02-14 14:27:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2023-02-14 14:27:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 14:27:00,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:00,376 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:00,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:00,582 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 [2023-02-14 14:27:00,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:00,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:00,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1562312095, now seen corresponding path program 2 times [2023-02-14 14:27:00,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:00,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218674730] [2023-02-14 14:27:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:00,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:00,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 14:27:00,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:00,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218674730] [2023-02-14 14:27:00,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218674730] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:00,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072997645] [2023-02-14 14:27:00,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:27:00,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:00,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:00,614 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) [2023-02-14 14:27:00,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 14:27:00,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 14:27:00,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:00,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 14:27:00,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 14:27:00,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:00,700 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-14 14:27:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072997645] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:00,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:00,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-02-14 14:27:00,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034201772] [2023-02-14 14:27:00,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:00,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 14:27:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:00,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 14:27:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 14:27:00,702 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:00,746 INFO L93 Difference]: Finished difference Result 142 states and 168 transitions. [2023-02-14 14:27:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 14:27:00,747 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 14:27:00,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:00,748 INFO L225 Difference]: With dead ends: 142 [2023-02-14 14:27:00,748 INFO L226 Difference]: Without dead ends: 141 [2023-02-14 14:27:00,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-14 14:27:00,749 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 68 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:00,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 35 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:27:00,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-14 14:27:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 100. [2023-02-14 14:27:00,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 98 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2023-02-14 14:27:00,760 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 21 [2023-02-14 14:27:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:00,760 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2023-02-14 14:27:00,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2023-02-14 14:27:00,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 14:27:00,761 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:00,761 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:00,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-14 14:27:00,967 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 [2023-02-14 14:27:00,967 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:00,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:00,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1096745154, now seen corresponding path program 1 times [2023-02-14 14:27:00,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:00,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221370321] [2023-02-14 14:27:00,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:00,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:00,999 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-14 14:27:01,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:01,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221370321] [2023-02-14 14:27:01,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221370321] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 14:27:01,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 14:27:01,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 14:27:01,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049058567] [2023-02-14 14:27:01,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 14:27:01,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 14:27:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:01,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 14:27:01,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 14:27:01,002 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:01,015 INFO L93 Difference]: Finished difference Result 100 states and 120 transitions. [2023-02-14 14:27:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 14:27:01,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-14 14:27:01,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:01,016 INFO L225 Difference]: With dead ends: 100 [2023-02-14 14:27:01,016 INFO L226 Difference]: Without dead ends: 99 [2023-02-14 14:27:01,017 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 [2023-02-14 14:27:01,017 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:01,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 21 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:27:01,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-14 14:27:01,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 50. [2023-02-14 14:27:01,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2023-02-14 14:27:01,023 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 25 [2023-02-14 14:27:01,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:01,023 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2023-02-14 14:27:01,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,024 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2023-02-14 14:27:01,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-14 14:27:01,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:01,024 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:01,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-14 14:27:01,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:01,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:01,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2049551912, now seen corresponding path program 2 times [2023-02-14 14:27:01,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:01,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667537436] [2023-02-14 14:27:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:01,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:01,085 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:01,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:01,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667537436] [2023-02-14 14:27:01,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667537436] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:01,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180510816] [2023-02-14 14:27:01,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 14:27:01,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:01,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:01,087 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) [2023-02-14 14:27:01,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 14:27:01,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 14:27:01,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:01,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 14:27:01,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:01,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:01,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180510816] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:01,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:01,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-14 14:27:01,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977820171] [2023-02-14 14:27:01,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:01,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-14 14:27:01,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:01,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-14 14:27:01,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 14:27:01,254 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:01,289 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2023-02-14 14:27:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 14:27:01,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-02-14 14:27:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:01,290 INFO L225 Difference]: With dead ends: 99 [2023-02-14 14:27:01,291 INFO L226 Difference]: Without dead ends: 98 [2023-02-14 14:27:01,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-02-14 14:27:01,291 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 63 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:01,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:27:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-14 14:27:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-14 14:27:01,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.1473684210526316) internal successors, (109), 96 states have internal predecessors, (109), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2023-02-14 14:27:01,301 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 36 [2023-02-14 14:27:01,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:01,302 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2023-02-14 14:27:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.090909090909091) internal successors, (67), 12 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2023-02-14 14:27:01,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-14 14:27:01,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:01,303 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:01,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-14 14:27:01,509 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1581473794, now seen corresponding path program 3 times [2023-02-14 14:27:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:01,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616850080] [2023-02-14 14:27:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:01,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616850080] [2023-02-14 14:27:01,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616850080] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:01,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511368041] [2023-02-14 14:27:01,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 14:27:01,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:01,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:01,780 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) [2023-02-14 14:27:01,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 14:27:01,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 14:27:01,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:01,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-14 14:27:01,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:01,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:02,163 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:02,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511368041] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:02,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:02,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-14 14:27:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791266740] [2023-02-14 14:27:02,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-14 14:27:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:02,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-14 14:27:02,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-14 14:27:02,166 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:02,250 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2023-02-14 14:27:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-14 14:27:02,250 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2023-02-14 14:27:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:02,252 INFO L225 Difference]: With dead ends: 195 [2023-02-14 14:27:02,252 INFO L226 Difference]: Without dead ends: 194 [2023-02-14 14:27:02,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-02-14 14:27:02,253 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 242 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:02,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 182 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 14:27:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-02-14 14:27:02,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-02-14 14:27:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 191 states have (on average 1.1361256544502618) internal successors, (217), 192 states have internal predecessors, (217), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:02,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 219 transitions. [2023-02-14 14:27:02,270 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 219 transitions. Word has length 72 [2023-02-14 14:27:02,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:02,271 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 219 transitions. [2023-02-14 14:27:02,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 24 states have internal predecessors, (139), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 219 transitions. [2023-02-14 14:27:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-02-14 14:27:02,273 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:02,273 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:02,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:02,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:02,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash -760026454, now seen corresponding path program 4 times [2023-02-14 14:27:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:02,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623946808] [2023-02-14 14:27:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:03,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:03,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623946808] [2023-02-14 14:27:03,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623946808] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:03,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812630946] [2023-02-14 14:27:03,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 14:27:03,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:03,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:03,093 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) [2023-02-14 14:27:03,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 14:27:03,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 14:27:03,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:03,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-14 14:27:03,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:03,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:04,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812630946] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:04,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:04,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-14 14:27:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779588550] [2023-02-14 14:27:04,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-14 14:27:04,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-14 14:27:04,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-14 14:27:04,100 INFO L87 Difference]: Start difference. First operand 194 states and 219 transitions. Second operand has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:04,348 INFO L93 Difference]: Finished difference Result 387 states and 459 transitions. [2023-02-14 14:27:04,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-02-14 14:27:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2023-02-14 14:27:04,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:04,350 INFO L225 Difference]: With dead ends: 387 [2023-02-14 14:27:04,350 INFO L226 Difference]: Without dead ends: 386 [2023-02-14 14:27:04,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2023-02-14 14:27:04,352 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 467 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:04,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 380 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 14:27:04,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-02-14 14:27:04,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-02-14 14:27:04,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 383 states have (on average 1.1305483028720626) internal successors, (433), 384 states have internal predecessors, (433), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:04,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 435 transitions. [2023-02-14 14:27:04,380 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 435 transitions. Word has length 144 [2023-02-14 14:27:04,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:04,381 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 435 transitions. [2023-02-14 14:27:04,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0212765957446805) internal successors, (283), 48 states have internal predecessors, (283), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 435 transitions. [2023-02-14 14:27:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2023-02-14 14:27:04,383 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:04,384 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:04,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:04,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-14 14:27:04,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:04,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:04,591 INFO L85 PathProgramCache]: Analyzing trace with hash -690283518, now seen corresponding path program 5 times [2023-02-14 14:27:04,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:04,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779988076] [2023-02-14 14:27:04,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:04,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:06,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:06,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779988076] [2023-02-14 14:27:06,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779988076] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730241896] [2023-02-14 14:27:06,767 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-14 14:27:06,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:06,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:06,769 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) [2023-02-14 14:27:06,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-14 14:27:06,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-14 14:27:06,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:06,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-14 14:27:06,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:07,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:07,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:10,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:10,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730241896] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:10,006 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:10,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-14 14:27:10,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391205295] [2023-02-14 14:27:10,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-14 14:27:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-14 14:27:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-14 14:27:10,012 INFO L87 Difference]: Start difference. First operand 386 states and 435 transitions. Second operand has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:11,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:11,015 INFO L93 Difference]: Finished difference Result 771 states and 915 transitions. [2023-02-14 14:27:11,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-02-14 14:27:11,016 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2023-02-14 14:27:11,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:11,019 INFO L225 Difference]: With dead ends: 771 [2023-02-14 14:27:11,019 INFO L226 Difference]: Without dead ends: 770 [2023-02-14 14:27:11,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2023-02-14 14:27:11,022 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1090 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:11,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 710 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 14:27:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2023-02-14 14:27:11,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2023-02-14 14:27:11,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 767 states have (on average 1.1277705345501956) internal successors, (865), 768 states have internal predecessors, (865), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 867 transitions. [2023-02-14 14:27:11,070 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 867 transitions. Word has length 288 [2023-02-14 14:27:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:11,070 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 867 transitions. [2023-02-14 14:27:11,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.010526315789473) internal successors, (571), 96 states have internal predecessors, (571), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 867 transitions. [2023-02-14 14:27:11,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2023-02-14 14:27:11,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:11,080 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:11,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:11,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-14 14:27:11,287 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:11,287 INFO L85 PathProgramCache]: Analyzing trace with hash -907415886, now seen corresponding path program 6 times [2023-02-14 14:27:11,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:11,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150905162] [2023-02-14 14:27:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:11,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:27:18,480 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:27:18,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150905162] [2023-02-14 14:27:18,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150905162] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:27:18,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234534543] [2023-02-14 14:27:18,481 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-14 14:27:18,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:18,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:27:18,482 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) [2023-02-14 14:27:18,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-14 14:27:18,840 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-14 14:27:18,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 14:27:18,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-14 14:27:18,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:27:19,543 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:19,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:27:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 26696 backedges. 0 proven. 26696 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:27:28,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234534543] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:27:28,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:27:28,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-14 14:27:28,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296774634] [2023-02-14 14:27:28,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:27:28,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-14 14:27:28,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:27:28,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-14 14:27:28,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-14 14:27:28,719 INFO L87 Difference]: Start difference. First operand 770 states and 867 transitions. Second operand has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:37,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:27:37,687 INFO L93 Difference]: Finished difference Result 1539 states and 1827 transitions. [2023-02-14 14:27:37,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-14 14:27:37,688 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 576 [2023-02-14 14:27:37,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:27:37,694 INFO L225 Difference]: With dead ends: 1539 [2023-02-14 14:27:37,694 INFO L226 Difference]: Without dead ends: 1538 [2023-02-14 14:27:37,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1056 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2023-02-14 14:27:37,698 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2329 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 14:27:37,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 1400 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 14:27:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2023-02-14 14:27:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2023-02-14 14:27:37,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1535 states have (on average 1.126384364820847) internal successors, (1729), 1536 states have internal predecessors, (1729), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1731 transitions. [2023-02-14 14:27:37,778 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1731 transitions. Word has length 576 [2023-02-14 14:27:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:27:37,779 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1731 transitions. [2023-02-14 14:27:37,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.005235602094241) internal successors, (1147), 192 states have internal predecessors, (1147), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:27:37,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1731 transitions. [2023-02-14 14:27:37,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1153 [2023-02-14 14:27:37,821 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:27:37,822 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:27:37,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-14 14:27:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:27:38,030 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:27:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:27:38,031 INFO L85 PathProgramCache]: Analyzing trace with hash 159470610, now seen corresponding path program 7 times [2023-02-14 14:27:38,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:27:38,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792096506] [2023-02-14 14:27:38,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:27:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:27:38,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:28:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:28:04,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 14:28:04,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792096506] [2023-02-14 14:28:04,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792096506] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 14:28:04,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036360978] [2023-02-14 14:28:04,116 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-14 14:28:04,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:28:04,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 14:28:04,121 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) [2023-02-14 14:28:04,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-14 14:28:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 14:28:04,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 3272 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-14 14:28:04,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 14:28:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:28:05,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 14:28:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 108680 backedges. 0 proven. 108680 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 14:28:41,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036360978] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 14:28:41,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 14:28:41,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-14 14:28:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945591853] [2023-02-14 14:28:41,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 14:28:41,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-14 14:28:41,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 14:28:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-14 14:28:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-14 14:28:41,111 INFO L87 Difference]: Start difference. First operand 1538 states and 1731 transitions. Second operand has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:30:47,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 14:30:47,500 INFO L93 Difference]: Finished difference Result 3075 states and 3651 transitions. [2023-02-14 14:30:47,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-14 14:30:47,501 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1152 [2023-02-14 14:30:47,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 14:30:47,511 INFO L225 Difference]: With dead ends: 3075 [2023-02-14 14:30:47,512 INFO L226 Difference]: Without dead ends: 3074 [2023-02-14 14:30:47,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2494 GetRequests, 2112 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2023-02-14 14:30:47,519 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5522 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5522 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-14 14:30:47,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5522 Valid, 2726 Invalid, 783 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-14 14:30:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2023-02-14 14:30:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2023-02-14 14:30:47,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3071 states have (on average 1.1256919570172583) internal successors, (3457), 3072 states have internal predecessors, (3457), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:30:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3459 transitions. [2023-02-14 14:30:47,691 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3459 transitions. Word has length 1152 [2023-02-14 14:30:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 14:30:47,692 INFO L495 AbstractCegarLoop]: Abstraction has 3074 states and 3459 transitions. [2023-02-14 14:30:47,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.002610966057441) internal successors, (2299), 384 states have internal predecessors, (2299), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 14:30:47,693 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3459 transitions. [2023-02-14 14:30:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2305 [2023-02-14 14:30:47,735 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 14:30:47,736 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 14:30:47,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-14 14:30:47,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 14:30:47,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2023-02-14 14:30:47,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 14:30:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1654070994, now seen corresponding path program 8 times [2023-02-14 14:30:47,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 14:30:47,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300095417] [2023-02-14 14:30:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 14:30:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 14:30:49,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat