./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/forester-heap/sll-sorted-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 11:06:48,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 11:06:48,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 11:06:48,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 11:06:48,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 11:06:48,460 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 11:06:48,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 11:06:48,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 11:06:48,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 11:06:48,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 11:06:48,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 11:06:48,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 11:06:48,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 11:06:48,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 11:06:48,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 11:06:48,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 11:06:48,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 11:06:48,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 11:06:48,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 11:06:48,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 11:06:48,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 11:06:48,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 11:06:48,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 11:06:48,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 11:06:48,487 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 11:06:48,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 11:06:48,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 11:06:48,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 11:06:48,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 11:06:48,489 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 11:06:48,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 11:06:48,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 11:06:48,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 11:06:48,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 11:06:48,492 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 11:06:48,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 11:06:48,493 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 11:06:48,493 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 11:06:48,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 11:06:48,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 11:06:48,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 11:06:48,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 11:06:48,530 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 11:06:48,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 11:06:48,531 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 11:06:48,531 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 11:06:48,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 11:06:48,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 11:06:48,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 11:06:48,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 11:06:48,533 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 11:06:48,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 11:06:48,533 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 11:06:48,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 11:06:48,534 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 11:06:48,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 11:06:48,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 11:06:48,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 11:06:48,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 11:06:48,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:06:48,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 11:06:48,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 11:06:48,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 11:06:48,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 11:06:48,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 11:06:48,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 11:06:48,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 11:06:48,537 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 11:06:48,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 11:06:48,537 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 11:06:48,537 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2023-02-14 11:06:48,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 11:06:48,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 11:06:48,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 11:06:48,765 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 11:06:48,765 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 11:06:48,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-02-14 11:06:49,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 11:06:49,871 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 11:06:49,872 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-02-14 11:06:49,884 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdef645c4/45a5855eb92f48afac8c2e52b72fc731/FLAG442c91913 [2023-02-14 11:06:50,207 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdef645c4/45a5855eb92f48afac8c2e52b72fc731 [2023-02-14 11:06:50,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 11:06:50,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 11:06:50,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 11:06:50,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 11:06:50,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 11:06:50,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22bbdd9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50, skipping insertion in model container [2023-02-14 11:06:50,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 11:06:50,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 11:06:50,431 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-02-14 11:06:50,434 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-02-14 11:06:50,435 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-02-14 11:06:50,437 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-02-14 11:06:50,438 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-02-14 11:06:50,439 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-02-14 11:06:50,439 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-02-14 11:06:50,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:06:50,446 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 11:06:50,469 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-02-14 11:06:50,470 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-02-14 11:06:50,471 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-02-14 11:06:50,473 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-02-14 11:06:50,473 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-02-14 11:06:50,474 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-02-14 11:06:50,474 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-02-14 11:06:50,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 11:06:50,492 INFO L208 MainTranslator]: Completed translation [2023-02-14 11:06:50,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50 WrapperNode [2023-02-14 11:06:50,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 11:06:50,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 11:06:50,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 11:06:50,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 11:06:50,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,534 INFO L138 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2023-02-14 11:06:50,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 11:06:50,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 11:06:50,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 11:06:50,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 11:06:50,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,573 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,574 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 11:06:50,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 11:06:50,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 11:06:50,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 11:06:50,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (1/1) ... [2023-02-14 11:06:50,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 11:06:50,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:06:50,605 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 11:06:50,626 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 11:06:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 11:06:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 11:06:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 11:06:50,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 11:06:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 11:06:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 11:06:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 11:06:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 11:06:50,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 11:06:50,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 11:06:50,772 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 11:06:50,773 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 11:06:51,013 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 11:06:51,017 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 11:06:51,017 INFO L300 CfgBuilder]: Removed 20 assume(true) statements. [2023-02-14 11:06:51,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:51 BoogieIcfgContainer [2023-02-14 11:06:51,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 11:06:51,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 11:06:51,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 11:06:51,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 11:06:51,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:06:50" (1/3) ... [2023-02-14 11:06:51,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cdbbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:51, skipping insertion in model container [2023-02-14 11:06:51,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:06:50" (2/3) ... [2023-02-14 11:06:51,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66cdbbc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:06:51, skipping insertion in model container [2023-02-14 11:06:51,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:06:51" (3/3) ... [2023-02-14 11:06:51,024 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2023-02-14 11:06:51,036 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 11:06:51,036 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-02-14 11:06:51,070 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 11:06:51,076 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;@344c660a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 11:06:51,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-02-14 11:06:51,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 11:06:51,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:51,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 11:06:51,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:51,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:51,086 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2023-02-14 11:06:51,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:51,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189902771] [2023-02-14 11:06:51,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:51,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:51,238 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 11:06:51,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:51,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189902771] [2023-02-14 11:06:51,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189902771] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:06:51,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:06:51,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 11:06:51,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048677275] [2023-02-14 11:06:51,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:06:51,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 11:06:51,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:51,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 11:06:51,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:06:51,277 INFO L87 Difference]: Start difference. First operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:06:51,299 INFO L93 Difference]: Finished difference Result 118 states and 190 transitions. [2023-02-14 11:06:51,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 11:06:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 11:06:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:06:51,306 INFO L225 Difference]: With dead ends: 118 [2023-02-14 11:06:51,306 INFO L226 Difference]: Without dead ends: 56 [2023-02-14 11:06:51,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 11:06:51,311 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:06:51,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:06:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-14 11:06:51,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-14 11:06:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.346938775510204) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2023-02-14 11:06:51,337 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 6 [2023-02-14 11:06:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:06:51,338 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2023-02-14 11:06:51,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,338 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2023-02-14 11:06:51,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-14 11:06:51,338 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:51,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:06:51,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 11:06:51,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:51,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:51,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2023-02-14 11:06:51,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:51,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224507824] [2023-02-14 11:06:51,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:51,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:51,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:51,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:51,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224507824] [2023-02-14 11:06:51,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224507824] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:06:51,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:06:51,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 11:06:51,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136405671] [2023-02-14 11:06:51,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:06:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 11:06:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 11:06:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 11:06:51,426 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:06:51,466 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2023-02-14 11:06:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 11:06:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-14 11:06:51,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:06:51,482 INFO L225 Difference]: With dead ends: 115 [2023-02-14 11:06:51,482 INFO L226 Difference]: Without dead ends: 61 [2023-02-14 11:06:51,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 11:06:51,483 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:06:51,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:06:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-14 11:06:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2023-02-14 11:06:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-14 11:06:51,492 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 7 [2023-02-14 11:06:51,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:06:51,493 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-14 11:06:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-14 11:06:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 11:06:51,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:51,494 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:06:51,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 11:06:51,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2023-02-14 11:06:51,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:51,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970066383] [2023-02-14 11:06:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:51,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:51,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-14 11:06:51,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:51,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970066383] [2023-02-14 11:06:51,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970066383] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:06:51,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:06:51,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 11:06:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732581646] [2023-02-14 11:06:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:06:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 11:06:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 11:06:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 11:06:51,600 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:06:51,698 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2023-02-14 11:06:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 11:06:51,699 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-14 11:06:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:06:51,700 INFO L225 Difference]: With dead ends: 99 [2023-02-14 11:06:51,701 INFO L226 Difference]: Without dead ends: 97 [2023-02-14 11:06:51,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:06:51,702 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 153 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 11:06:51,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 11:06:51,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-14 11:06:51,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2023-02-14 11:06:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-02-14 11:06:51,712 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2023-02-14 11:06:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:06:51,712 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-02-14 11:06:51,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:51,713 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-02-14 11:06:51,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 11:06:51,714 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:51,714 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:06:51,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 11:06:51,715 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:51,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2064961448, now seen corresponding path program 1 times [2023-02-14 11:06:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:51,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113054974] [2023-02-14 11:06:51,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:51,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:52,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113054974] [2023-02-14 11:06:52,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113054974] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:06:52,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655013861] [2023-02-14 11:06:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:06:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:06:52,422 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 11:06:52,423 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 11:06:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:52,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-14 11:06:52,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:06:52,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 11:06:52,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:06:52,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:06:52,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-02-14 11:06:52,588 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:06:52,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-14 11:06:52,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-14 11:06:52,606 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 11:06:52,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 11:06:52,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 11:06:52,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:06:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:52,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:06:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:52,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655013861] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:06:52,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:06:52,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-02-14 11:06:52,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913774669] [2023-02-14 11:06:52,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:06:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 11:06:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 11:06:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=226, Unknown=6, NotChecked=0, Total=272 [2023-02-14 11:06:52,810 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:06:54,305 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2023-02-14 11:06:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-14 11:06:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 11:06:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:06:54,307 INFO L225 Difference]: With dead ends: 251 [2023-02-14 11:06:54,308 INFO L226 Difference]: Without dead ends: 195 [2023-02-14 11:06:54,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=1014, Unknown=8, NotChecked=0, Total=1260 [2023-02-14 11:06:54,309 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 313 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 62 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 11:06:54,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 980 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 667 Invalid, 1 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 11:06:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-02-14 11:06:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 80. [2023-02-14 11:06:54,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.337837837837838) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2023-02-14 11:06:54,319 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 18 [2023-02-14 11:06:54,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:06:54,320 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2023-02-14 11:06:54,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2023-02-14 11:06:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 11:06:54,320 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:54,321 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:06:54,328 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 11:06:54,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:06:54,526 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:54,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:54,527 INFO L85 PathProgramCache]: Analyzing trace with hash -644381054, now seen corresponding path program 1 times [2023-02-14 11:06:54,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:54,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190360842] [2023-02-14 11:06:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:54,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:54,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190360842] [2023-02-14 11:06:54,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190360842] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:06:54,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287982639] [2023-02-14 11:06:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:06:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:06:54,856 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 11:06:54,891 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 11:06:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:54,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-14 11:06:54,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:06:54,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:06:54,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:06:55,002 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:06:55,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 11:06:55,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:06:55,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:06:55,020 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:06:55,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 11:06:55,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:06:55,032 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 11:06:55,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 11:06:55,064 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 11:06:55,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2023-02-14 11:06:55,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-14 11:06:55,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-02-14 11:06:55,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-14 11:06:55,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:06:55,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:06:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:55,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:06:55,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 49 [2023-02-14 11:06:55,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:55,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2023-02-14 11:06:55,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:55,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 42 [2023-02-14 11:06:55,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:55,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 47 [2023-02-14 11:06:55,311 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:55,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2023-02-14 11:06:55,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 35 [2023-02-14 11:06:55,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2023-02-14 11:06:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:55,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287982639] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:06:55,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:06:55,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2023-02-14 11:06:55,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195655727] [2023-02-14 11:06:55,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:06:55,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 11:06:55,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:55,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 11:06:55,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=196, Unknown=5, NotChecked=0, Total=240 [2023-02-14 11:06:55,387 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:55,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:06:55,675 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2023-02-14 11:06:55,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 11:06:55,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-14 11:06:55,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:06:55,676 INFO L225 Difference]: With dead ends: 114 [2023-02-14 11:06:55,677 INFO L226 Difference]: Without dead ends: 112 [2023-02-14 11:06:55,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=336, Unknown=5, NotChecked=0, Total=420 [2023-02-14 11:06:55,677 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 117 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:06:55,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 458 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 11:06:55,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-14 11:06:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2023-02-14 11:06:55,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 91 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:55,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2023-02-14 11:06:55,692 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 21 [2023-02-14 11:06:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:06:55,693 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2023-02-14 11:06:55,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:06:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2023-02-14 11:06:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 11:06:55,694 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:06:55,695 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:06:55,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 11:06:55,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:06:55,899 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:06:55,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:06:55,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2029850711, now seen corresponding path program 1 times [2023-02-14 11:06:55,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:06:55,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718217305] [2023-02-14 11:06:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:55,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:06:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:56,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:06:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718217305] [2023-02-14 11:06:56,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718217305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:06:56,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986157484] [2023-02-14 11:06:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:06:56,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:06:56,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:06:56,539 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 11:06:56,540 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 11:06:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:06:56,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 67 conjunts are in the unsatisfiable core [2023-02-14 11:06:56,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:06:56,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:06:56,672 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 11:06:56,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 11:06:56,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:06:56,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:06:56,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:06:56,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:06:56,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:06:56,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 11:06:56,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:06:56,758 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:06:56,764 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-02-14 11:06:56,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 63 [2023-02-14 11:06:56,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:06:56,779 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2023-02-14 11:06:56,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 81 treesize of output 77 [2023-02-14 11:06:56,797 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-02-14 11:06:56,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 37 [2023-02-14 11:06:56,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:06:56,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-14 11:06:56,823 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-14 11:06:56,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-02-14 11:06:56,840 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 11:06:56,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-14 11:06:56,921 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-02-14 11:06:56,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 65 [2023-02-14 11:06:56,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-02-14 11:06:56,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-14 11:06:57,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:06:57,053 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 11:06:57,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 56 [2023-02-14 11:06:57,057 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:06:57,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2023-02-14 11:06:57,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:06:57,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:06:57,113 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_373 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_373) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_372) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 0)) is different from false [2023-02-14 11:06:57,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 52 [2023-02-14 11:06:57,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2023-02-14 11:06:57,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 99 [2023-02-14 11:06:57,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-02-14 11:06:57,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-02-14 11:06:57,287 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 98 [2023-02-14 11:06:57,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 118 [2023-02-14 11:06:57,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 238 treesize of output 189 [2023-02-14 11:06:57,315 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 280 treesize of output 279 [2023-02-14 11:06:57,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 263 treesize of output 255 [2023-02-14 11:06:57,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 255 treesize of output 251 [2023-02-14 11:06:57,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 247 [2023-02-14 11:06:57,341 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 247 treesize of output 244 [2023-02-14 11:06:57,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 235 treesize of output 231 [2023-02-14 11:06:57,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:06:57,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 220 [2023-02-14 11:06:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-14 11:06:58,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986157484] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:06:58,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:06:58,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 20 [2023-02-14 11:06:58,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608589439] [2023-02-14 11:06:58,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:06:58,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-14 11:06:58,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:06:58,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-14 11:06:58,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=284, Unknown=3, NotChecked=34, Total=380 [2023-02-14 11:06:58,578 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:00,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 11:07:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:07:01,224 INFO L93 Difference]: Finished difference Result 211 states and 256 transitions. [2023-02-14 11:07:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 11:07:01,225 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-14 11:07:01,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:07:01,226 INFO L225 Difference]: With dead ends: 211 [2023-02-14 11:07:01,226 INFO L226 Difference]: Without dead ends: 176 [2023-02-14 11:07:01,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=532, Unknown=3, NotChecked=48, Total=702 [2023-02-14 11:07:01,226 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 238 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 28 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-02-14 11:07:01,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 464 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 328 Invalid, 4 Unknown, 150 Unchecked, 2.3s Time] [2023-02-14 11:07:01,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-14 11:07:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2023-02-14 11:07:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.32) internal successors, (132), 105 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:01,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2023-02-14 11:07:01,238 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 25 [2023-02-14 11:07:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:07:01,238 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2023-02-14 11:07:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.7) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2023-02-14 11:07:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 11:07:01,239 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:07:01,239 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:07:01,257 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 11:07:01,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:01,440 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:07:01,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:07:01,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1220504085, now seen corresponding path program 1 times [2023-02-14 11:07:01,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:07:01,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293513283] [2023-02-14 11:07:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:07:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-14 11:07:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:07:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293513283] [2023-02-14 11:07:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293513283] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 11:07:01,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 11:07:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 11:07:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675598957] [2023-02-14 11:07:01,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 11:07:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 11:07:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:07:01,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 11:07:01,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 11:07:01,516 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:01,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:07:01,580 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2023-02-14 11:07:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 11:07:01,580 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-14 11:07:01,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:07:01,581 INFO L225 Difference]: With dead ends: 155 [2023-02-14 11:07:01,581 INFO L226 Difference]: Without dead ends: 117 [2023-02-14 11:07:01,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-14 11:07:01,582 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 11:07:01,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 11:07:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-14 11:07:01,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2023-02-14 11:07:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 109 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2023-02-14 11:07:01,599 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 25 [2023-02-14 11:07:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:07:01,599 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2023-02-14 11:07:01,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:01,600 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2023-02-14 11:07:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-14 11:07:01,601 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:07:01,601 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:07:01,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 11:07:01,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:07:01,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:07:01,602 INFO L85 PathProgramCache]: Analyzing trace with hash 836449433, now seen corresponding path program 1 times [2023-02-14 11:07:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:07:01,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138730775] [2023-02-14 11:07:01,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:01,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:07:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:07:02,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138730775] [2023-02-14 11:07:02,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138730775] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:07:02,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822533591] [2023-02-14 11:07:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:02,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:02,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:07:02,173 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 11:07:02,220 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 11:07:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:02,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-14 11:07:02,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:07:02,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:07:02,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:07:02,316 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:07:02,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 11:07:02,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:07:02,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-14 11:07:02,335 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:07:02,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 11:07:02,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:07:02,353 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-14 11:07:02,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-02-14 11:07:02,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 11:07:02,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:07:02,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:07:02,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:07:02,447 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2023-02-14 11:07:02,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 72 [2023-02-14 11:07:02,465 INFO L321 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2023-02-14 11:07:02,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 37 [2023-02-14 11:07:02,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-14 11:07:02,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-14 11:07:02,486 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-14 11:07:02,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-02-14 11:07:02,501 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-14 11:07:02,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-14 11:07:02,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-14 11:07:02,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-14 11:07:02,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-14 11:07:02,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-14 11:07:02,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:07:02,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:07:02,693 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:02,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:07:02,749 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_573 (Array Int Int)) (v_ArrVal_575 (Array Int Int)) (v_ArrVal_574 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_575) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_573) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_574) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) 4)) 1)) is different from false [2023-02-14 11:07:02,800 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:02,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 51 [2023-02-14 11:07:02,808 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:02,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 85 [2023-02-14 11:07:02,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2023-02-14 11:07:04,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:04,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 88 [2023-02-14 11:07:04,964 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:04,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 108 [2023-02-14 11:07:04,972 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:04,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 312 treesize of output 219 [2023-02-14 11:07:04,983 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:04,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 309 [2023-02-14 11:07:04,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 293 treesize of output 289 [2023-02-14 11:07:04,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 289 treesize of output 285 [2023-02-14 11:07:05,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 277 [2023-02-14 11:07:05,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 277 treesize of output 273 [2023-02-14 11:07:05,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 273 treesize of output 271 [2023-02-14 11:07:05,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 271 treesize of output 263 [2023-02-14 11:07:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-14 11:07:05,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822533591] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:07:05,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:07:05,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2023-02-14 11:07:05,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180776137] [2023-02-14 11:07:05,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:07:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-14 11:07:05,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:07:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-14 11:07:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=349, Unknown=3, NotChecked=38, Total=462 [2023-02-14 11:07:05,457 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:07,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 11:07:10,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 11:07:12,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-02-14 11:07:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:07:12,572 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2023-02-14 11:07:12,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 11:07:12,573 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-14 11:07:12,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:07:12,574 INFO L225 Difference]: With dead ends: 177 [2023-02-14 11:07:12,574 INFO L226 Difference]: Without dead ends: 175 [2023-02-14 11:07:12,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=164, Invalid=766, Unknown=4, NotChecked=58, Total=992 [2023-02-14 11:07:12,574 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 193 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 29 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-02-14 11:07:12,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 573 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 483 Invalid, 4 Unknown, 106 Unchecked, 6.6s Time] [2023-02-14 11:07:12,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-14 11:07:12,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 103. [2023-02-14 11:07:12,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 102 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:12,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2023-02-14 11:07:12,583 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 25 [2023-02-14 11:07:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:07:12,584 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2023-02-14 11:07:12,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2023-02-14 11:07:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 11:07:12,585 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:07:12,585 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:07:12,592 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 11:07:12,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:12,790 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:07:12,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:07:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2046348832, now seen corresponding path program 1 times [2023-02-14 11:07:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:07:12,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322055305] [2023-02-14 11:07:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:12,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:07:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:13,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:13,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:07:13,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322055305] [2023-02-14 11:07:13,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322055305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:07:13,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026617670] [2023-02-14 11:07:13,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:07:13,165 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 11:07:13,167 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 11:07:13,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:13,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-14 11:07:13,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:07:13,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-14 11:07:13,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:07:13,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:07:13,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-02-14 11:07:13,290 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:07:13,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-14 11:07:13,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-14 11:07:13,302 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 11:07:13,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 11:07:13,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-14 11:07:13,402 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:07:13,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-14 11:07:13,414 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:07:13,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-14 11:07:13,430 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 11:07:13,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-02-14 11:07:13,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-14 11:07:13,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:07:13,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:07:13,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 25 [2023-02-14 11:07:13,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 11:07:13,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 24 [2023-02-14 11:07:13,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-14 11:07:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:13,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:07:13,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-02-14 11:07:13,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2023-02-14 11:07:13,583 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (or (= |c_ULTIMATE.start_main_~x~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_9| Int) (v_ArrVal_718 Int) (v_ArrVal_720 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_9| v_ArrVal_720))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_718))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) 0))) (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_9| Int) (v_ArrVal_718 Int) (v_ArrVal_720 (Array Int Int))) (or (= |v_ULTIMATE.start_main_~tmp~0#1.base_9| |c_ULTIMATE.start_main_~x~0#1.base|) (= (select (select (let ((.cse2 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_9| v_ArrVal_720))) (store .cse2 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_718))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) 0))))) is different from false [2023-02-14 11:07:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:18,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026617670] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 11:07:18,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 11:07:18,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 21 [2023-02-14 11:07:18,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170708062] [2023-02-14 11:07:18,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 11:07:18,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-14 11:07:18,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 11:07:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-14 11:07:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=290, Unknown=13, NotChecked=36, Total=420 [2023-02-14 11:07:18,690 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 11:07:19,051 INFO L93 Difference]: Finished difference Result 222 states and 269 transitions. [2023-02-14 11:07:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-14 11:07:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-14 11:07:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 11:07:19,052 INFO L225 Difference]: With dead ends: 222 [2023-02-14 11:07:19,052 INFO L226 Difference]: Without dead ends: 157 [2023-02-14 11:07:19,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=152, Invalid=438, Unknown=14, NotChecked=46, Total=650 [2023-02-14 11:07:19,053 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 184 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 11:07:19,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 542 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 334 Invalid, 0 Unknown, 68 Unchecked, 0.2s Time] [2023-02-14 11:07:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-14 11:07:19,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2023-02-14 11:07:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 119 states have (on average 1.2857142857142858) internal successors, (153), 124 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2023-02-14 11:07:19,066 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 27 [2023-02-14 11:07:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 11:07:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2023-02-14 11:07:19,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 21 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 11:07:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2023-02-14 11:07:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-14 11:07:19,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 11:07:19,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 11:07:19,079 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 11:07:19,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:19,277 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-14 11:07:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 11:07:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash 485990957, now seen corresponding path program 1 times [2023-02-14 11:07:19,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 11:07:19,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654552028] [2023-02-14 11:07:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:19,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 11:07:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:19,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 11:07:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654552028] [2023-02-14 11:07:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654552028] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 11:07:19,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461634434] [2023-02-14 11:07:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 11:07:19,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 11:07:19,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 11:07:19,542 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 11:07:19,544 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 11:07:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 11:07:19,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-14 11:07:19,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 11:07:19,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-14 11:07:19,658 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-14 11:07:19,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-14 11:07:19,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-14 11:07:19,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-02-14 11:07:19,707 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-14 11:07:19,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 50 [2023-02-14 11:07:19,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-02-14 11:07:19,878 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2023-02-14 11:07:19,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 58 [2023-02-14 11:07:19,884 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-14 11:07:19,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 26 [2023-02-14 11:07:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 11:07:19,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 11:07:22,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:22,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 27496 treesize of output 24949 [2023-02-14 11:07:23,960 INFO L321 Elim1Store]: treesize reduction 359, result has 54.0 percent of original size [2023-02-14 11:07:23,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 56 case distinctions, treesize of input 191898 treesize of output 184242 [2023-02-14 11:07:33,150 WARN L233 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 1042 DAG size of output: 1003 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-02-14 11:07:33,877 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-14 11:07:33,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 148622 treesize of output 148680 [2023-02-14 11:07:34,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-14 11:07:36,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-14 11:07:36,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-14 11:07:36,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19