./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a31fd051 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-01-1.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 ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 10:36:52,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:36:52,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:36:52,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:36:52,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:36:52,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:36:52,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:36:52,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:36:52,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:36:53,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:36:53,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:36:53,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:36:53,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:36:53,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:36:53,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:36:53,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:36:53,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:36:53,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:36:53,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:36:53,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:36:53,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:36:53,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:36:53,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:36:53,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:36:53,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:36:53,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:36:53,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:36:53,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:36:53,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:36:53,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:36:53,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:36:53,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:36:53,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:36:53,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:36:53,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:36:53,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:36:53,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:36:53,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:36:53,030 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:36:53,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:36:53,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:36:53,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:36:53,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:36:53,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:36:53,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:36:53,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:36:53,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:36:53,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:36:53,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:36:53,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:36:53,057 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:36:53,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:36:53,057 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:36:53,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:36:53,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:36:53,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:36:53,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:36:53,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:36:53,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:36:53,059 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:36:53,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:36:53,060 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:36:53,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:36:53,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:36:53,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:36:53,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:36:53,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:36:53,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:36:53,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:36:53,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:36:53,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:36:53,067 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:36:53,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2023-02-15 10:36:53,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:36:53,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:36:53,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:36:53,271 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:36:53,271 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:36:53,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-15 10:36:54,220 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:36:54,435 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:36:54,435 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-01-1.i [2023-02-15 10:36:54,442 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c68d60be/2627b56c2f0145ca81533a6658670d9d/FLAG33e7de98a [2023-02-15 10:36:54,453 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c68d60be/2627b56c2f0145ca81533a6658670d9d [2023-02-15 10:36:54,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:36:54,456 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:36:54,457 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:36:54,457 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:36:54,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:36:54,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@81b0e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54, skipping insertion in model container [2023-02-15 10:36:54,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:36:54,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:36:54,631 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-01-1.i[22034,22047] [2023-02-15 10:36:54,636 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-01-1.i[22307,22320] [2023-02-15 10:36:54,637 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-01-1.i[22516,22529] [2023-02-15 10:36:54,637 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-01-1.i[22586,22599] [2023-02-15 10:36:54,639 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-01-1.i[22853,22866] [2023-02-15 10:36:54,640 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-01-1.i[22961,22974] [2023-02-15 10:36:54,641 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-01-1.i[23192,23205] [2023-02-15 10:36:54,641 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-01-1.i[23272,23285] [2023-02-15 10:36:54,642 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-01-1.i[23351,23364] [2023-02-15 10:36:54,642 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-01-1.i[23441,23454] [2023-02-15 10:36:54,643 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-01-1.i[23619,23632] [2023-02-15 10:36:54,644 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-01-1.i[23697,23710] [2023-02-15 10:36:54,644 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-01-1.i[23774,23787] [2023-02-15 10:36:54,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:36:54,652 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:36:54,670 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-01-1.i[22034,22047] [2023-02-15 10:36:54,672 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-01-1.i[22307,22320] [2023-02-15 10:36:54,673 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-01-1.i[22516,22529] [2023-02-15 10:36:54,673 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-01-1.i[22586,22599] [2023-02-15 10:36:54,675 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-01-1.i[22853,22866] [2023-02-15 10:36:54,675 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-01-1.i[22961,22974] [2023-02-15 10:36:54,676 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-01-1.i[23192,23205] [2023-02-15 10:36:54,677 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-01-1.i[23272,23285] [2023-02-15 10:36:54,677 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-01-1.i[23351,23364] [2023-02-15 10:36:54,678 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-01-1.i[23441,23454] [2023-02-15 10:36:54,679 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-01-1.i[23619,23632] [2023-02-15 10:36:54,679 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-01-1.i[23697,23710] [2023-02-15 10:36:54,680 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-01-1.i[23774,23787] [2023-02-15 10:36:54,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:36:54,698 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:36:54,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54 WrapperNode [2023-02-15 10:36:54,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:36:54,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:36:54,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:36:54,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:36:54,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,740 INFO L138 Inliner]: procedures = 119, calls = 41, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 221 [2023-02-15 10:36:54,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:36:54,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:36:54,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:36:54,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:36:54,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,781 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:36:54,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:36:54,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:36:54,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:36:54,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (1/1) ... [2023-02-15 10:36:54,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:36:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:36:54,828 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) [2023-02-15 10:36:54,834 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 [2023-02-15 10:36:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:36:54,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:36:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:36:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:36:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:36:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:36:54,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:36:54,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:36:55,008 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:36:55,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:36:55,307 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:36:55,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:36:55,314 INFO L300 CfgBuilder]: Removed 30 assume(true) statements. [2023-02-15 10:36:55,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:36:55 BoogieIcfgContainer [2023-02-15 10:36:55,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:36:55,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:36:55,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:36:55,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:36:55,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:36:54" (1/3) ... [2023-02-15 10:36:55,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783f6090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:36:55, skipping insertion in model container [2023-02-15 10:36:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:36:54" (2/3) ... [2023-02-15 10:36:55,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783f6090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:36:55, skipping insertion in model container [2023-02-15 10:36:55,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:36:55" (3/3) ... [2023-02-15 10:36:55,324 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2023-02-15 10:36:55,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:36:55,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-02-15 10:36:55,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:36:55,389 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;@3a37f375, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:36:55,390 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-02-15 10:36:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 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) [2023-02-15 10:36:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-15 10:36:55,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:55,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-15 10:36:55,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:55,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:55,403 INFO L85 PathProgramCache]: Analyzing trace with hash 925700, now seen corresponding path program 1 times [2023-02-15 10:36:55,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:55,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211762339] [2023-02-15 10:36:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:55,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:55,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:55,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:55,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211762339] [2023-02-15 10:36:55,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211762339] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:55,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:55,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:55,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743702078] [2023-02-15 10:36:55,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:55,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:55,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:55,577 INFO L87 Difference]: Start difference. First operand has 83 states, 69 states have (on average 1.9565217391304348) internal successors, (135), 82 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-15 10:36:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:55,634 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2023-02-15 10:36:55,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:55,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-02-15 10:36:55,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:55,643 INFO L225 Difference]: With dead ends: 180 [2023-02-15 10:36:55,643 INFO L226 Difference]: Without dead ends: 95 [2023-02-15 10:36:55,646 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 [2023-02-15 10:36:55,649 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 83 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:55,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 102 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:55,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-15 10:36:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2023-02-15 10:36:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 65 states have (on average 1.323076923076923) internal successors, (86), 76 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2023-02-15 10:36:55,692 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 4 [2023-02-15 10:36:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:55,692 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2023-02-15 10:36:55,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-02-15 10:36:55,693 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2023-02-15 10:36:55,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 10:36:55,693 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:55,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:55,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:36:55,694 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:55,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:55,695 INFO L85 PathProgramCache]: Analyzing trace with hash 261454926, now seen corresponding path program 1 times [2023-02-15 10:36:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:55,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361888628] [2023-02-15 10:36:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:55,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:55,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:55,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:55,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361888628] [2023-02-15 10:36:55,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361888628] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:55,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:55,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:55,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570053979] [2023-02-15 10:36:55,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:55,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:55,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:55,739 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-02-15 10:36:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:55,750 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-02-15 10:36:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-15 10:36:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:55,751 INFO L225 Difference]: With dead ends: 80 [2023-02-15 10:36:55,751 INFO L226 Difference]: Without dead ends: 78 [2023-02-15 10:36:55,751 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 [2023-02-15 10:36:55,752 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:55,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:55,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-02-15 10:36:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-02-15 10:36:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 77 states have internal predecessors, (87), 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) [2023-02-15 10:36:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2023-02-15 10:36:55,762 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 10 [2023-02-15 10:36:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:55,762 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2023-02-15 10:36:55,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-02-15 10:36:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2023-02-15 10:36:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 10:36:55,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:55,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:55,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:36:55,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:55,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 261456848, now seen corresponding path program 1 times [2023-02-15 10:36:55,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280445110] [2023-02-15 10:36:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:55,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:55,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280445110] [2023-02-15 10:36:55,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280445110] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:55,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:55,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:55,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3861465] [2023-02-15 10:36:55,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:55,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:55,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:55,986 INFO L87 Difference]: Start difference. First operand 78 states and 87 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) [2023-02-15 10:36:56,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,056 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2023-02-15 10:36:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:36:56,056 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 10 [2023-02-15 10:36:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,057 INFO L225 Difference]: With dead ends: 79 [2023-02-15 10:36:56,057 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 10:36:56,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:56,058 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 219 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:36:56,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 10:36:56,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-02-15 10:36:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 64 states have (on average 1.3125) internal successors, (84), 74 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 84 transitions. [2023-02-15 10:36:56,067 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 84 transitions. Word has length 10 [2023-02-15 10:36:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,067 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 84 transitions. [2023-02-15 10:36:56,067 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) [2023-02-15 10:36:56,067 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 84 transitions. [2023-02-15 10:36:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 10:36:56,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 10:36:56,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1712619113, now seen corresponding path program 1 times [2023-02-15 10:36:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941094693] [2023-02-15 10:36:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941094693] [2023-02-15 10:36:56,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941094693] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123243991] [2023-02-15 10:36:56,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:56,113 INFO L87 Difference]: Start difference. First operand 75 states and 84 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-15 10:36:56,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,139 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2023-02-15 10:36:56,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-15 10:36:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,140 INFO L225 Difference]: With dead ends: 78 [2023-02-15 10:36:56,141 INFO L226 Difference]: Without dead ends: 74 [2023-02-15 10:36:56,141 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 [2023-02-15 10:36:56,142 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 16 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-02-15 10:36:56,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2023-02-15 10:36:56,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.2903225806451613) internal successors, (80), 70 states have internal predecessors, (80), 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) [2023-02-15 10:36:56,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 80 transitions. [2023-02-15 10:36:56,146 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 80 transitions. Word has length 15 [2023-02-15 10:36:56,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,147 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 80 transitions. [2023-02-15 10:36:56,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-02-15 10:36:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 80 transitions. [2023-02-15 10:36:56,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:36:56,147 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 10:36:56,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1551589151, now seen corresponding path program 1 times [2023-02-15 10:36:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904793075] [2023-02-15 10:36:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904793075] [2023-02-15 10:36:56,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904793075] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386127754] [2023-02-15 10:36:56,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:56,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:56,239 INFO L87 Difference]: Start difference. First operand 71 states and 80 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 10:36:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,295 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2023-02-15 10:36:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:36:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-02-15 10:36:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,296 INFO L225 Difference]: With dead ends: 187 [2023-02-15 10:36:56,296 INFO L226 Difference]: Without dead ends: 124 [2023-02-15 10:36:56,296 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 [2023-02-15 10:36:56,297 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 56 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 187 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-15 10:36:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 73. [2023-02-15 10:36:56,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.28125) internal successors, (82), 72 states have internal predecessors, (82), 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) [2023-02-15 10:36:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2023-02-15 10:36:56,302 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 16 [2023-02-15 10:36:56,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,303 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2023-02-15 10:36:56,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 10:36:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2023-02-15 10:36:56,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 10:36:56,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 10:36:56,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2063319775, now seen corresponding path program 1 times [2023-02-15 10:36:56,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868752055] [2023-02-15 10:36:56,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868752055] [2023-02-15 10:36:56,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868752055] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645771793] [2023-02-15 10:36:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:56,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:56,344 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 10:36:56,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,387 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2023-02-15 10:36:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:36:56,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2023-02-15 10:36:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,388 INFO L225 Difference]: With dead ends: 132 [2023-02-15 10:36:56,388 INFO L226 Difference]: Without dead ends: 112 [2023-02-15 10:36:56,389 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 [2023-02-15 10:36:56,389 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 131 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 116 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-15 10:36:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 72. [2023-02-15 10:36:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.265625) internal successors, (81), 71 states have internal predecessors, (81), 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) [2023-02-15 10:36:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2023-02-15 10:36:56,394 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 16 [2023-02-15 10:36:56,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,395 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2023-02-15 10:36:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2023-02-15 10:36:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2023-02-15 10:36:56,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 10:36:56,395 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 10:36:56,396 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash -940628212, now seen corresponding path program 1 times [2023-02-15 10:36:56,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108774140] [2023-02-15 10:36:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108774140] [2023-02-15 10:36:56,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108774140] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666344237] [2023-02-15 10:36:56,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:56,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:56,423 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-02-15 10:36:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,432 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2023-02-15 10:36:56,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2023-02-15 10:36:56,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,433 INFO L225 Difference]: With dead ends: 137 [2023-02-15 10:36:56,433 INFO L226 Difference]: Without dead ends: 96 [2023-02-15 10:36:56,434 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 [2023-02-15 10:36:56,434 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 24 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-02-15 10:36:56,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 75. [2023-02-15 10:36:56,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 74 states have internal predecessors, (85), 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) [2023-02-15 10:36:56,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2023-02-15 10:36:56,439 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 20 [2023-02-15 10:36:56,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,439 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2023-02-15 10:36:56,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-02-15 10:36:56,440 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2023-02-15 10:36:56,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 10:36:56,440 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,440 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 10:36:56,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,441 INFO L85 PathProgramCache]: Analyzing trace with hash 905291998, now seen corresponding path program 1 times [2023-02-15 10:36:56,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103473350] [2023-02-15 10:36:56,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103473350] [2023-02-15 10:36:56,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103473350] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:56,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025695778] [2023-02-15 10:36:56,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:56,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:56,466 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-02-15 10:36:56,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,474 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2023-02-15 10:36:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:56,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 [2023-02-15 10:36:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,475 INFO L225 Difference]: With dead ends: 75 [2023-02-15 10:36:56,475 INFO L226 Difference]: Without dead ends: 73 [2023-02-15 10:36:56,475 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 [2023-02-15 10:36:56,476 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 13 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 129 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-15 10:36:56,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-02-15 10:36:56,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 72 states have internal predecessors, (83), 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) [2023-02-15 10:36:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 83 transitions. [2023-02-15 10:36:56,480 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 83 transitions. Word has length 21 [2023-02-15 10:36:56,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,480 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 83 transitions. [2023-02-15 10:36:56,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-02-15 10:36:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 83 transitions. [2023-02-15 10:36:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 10:36:56,481 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 10:36:56,481 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash 886650935, now seen corresponding path program 1 times [2023-02-15 10:36:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869950899] [2023-02-15 10:36:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869950899] [2023-02-15 10:36:56,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869950899] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:36:56,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320275999] [2023-02-15 10:36:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:36:56,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:36:56,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:56,550 INFO L87 Difference]: Start difference. First operand 73 states and 83 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,593 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2023-02-15 10:36:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 10:36:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-15 10:36:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,594 INFO L225 Difference]: With dead ends: 74 [2023-02-15 10:36:56,594 INFO L226 Difference]: Without dead ends: 72 [2023-02-15 10:36:56,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:36:56,595 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 181 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:56,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-02-15 10:36:56,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-02-15 10:36:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.2461538461538462) internal successors, (81), 70 states have internal predecessors, (81), 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) [2023-02-15 10:36:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2023-02-15 10:36:56,599 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 23 [2023-02-15 10:36:56,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,599 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2023-02-15 10:36:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2023-02-15 10:36:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:36:56,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 10:36:56,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1458355201, now seen corresponding path program 1 times [2023-02-15 10:36:56,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035965077] [2023-02-15 10:36:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:56,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:56,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035965077] [2023-02-15 10:36:56,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035965077] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:56,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:56,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:36:56,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143261565] [2023-02-15 10:36:56,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:56,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:36:56,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:56,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:36:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:36:56,692 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:56,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:56,824 INFO L93 Difference]: Finished difference Result 175 states and 199 transitions. [2023-02-15 10:36:56,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:36:56,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:36:56,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:56,825 INFO L225 Difference]: With dead ends: 175 [2023-02-15 10:36:56,825 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 10:36:56,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:36:56,826 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 114 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:56,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 281 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:36:56,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 10:36:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 81. [2023-02-15 10:36:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 80 states have internal predecessors, (92), 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) [2023-02-15 10:36:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions. [2023-02-15 10:36:56,831 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 24 [2023-02-15 10:36:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:56,831 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 92 transitions. [2023-02-15 10:36:56,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:56,832 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 92 transitions. [2023-02-15 10:36:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-15 10:36:56,832 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:56,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:36:56,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 10:36:56,833 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:56,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1357759361, now seen corresponding path program 1 times [2023-02-15 10:36:56,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:56,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47604888] [2023-02-15 10:36:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:56,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:58,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:36:58,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:58,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47604888] [2023-02-15 10:36:58,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47604888] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:58,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:58,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:36:58,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484551834] [2023-02-15 10:36:58,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:58,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:36:58,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:36:58,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:36:58,355 INFO L87 Difference]: Start difference. First operand 81 states and 92 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:58,669 INFO L93 Difference]: Finished difference Result 234 states and 259 transitions. [2023-02-15 10:36:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:36:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-15 10:36:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:58,671 INFO L225 Difference]: With dead ends: 234 [2023-02-15 10:36:58,671 INFO L226 Difference]: Without dead ends: 232 [2023-02-15 10:36:58,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:36:58,672 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 258 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:58,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 420 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 10:36:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-02-15 10:36:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 93. [2023-02-15 10:36:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.2183908045977012) internal successors, (106), 92 states have internal predecessors, (106), 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) [2023-02-15 10:36:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 106 transitions. [2023-02-15 10:36:58,684 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 106 transitions. Word has length 24 [2023-02-15 10:36:58,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:58,684 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 106 transitions. [2023-02-15 10:36:58,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:36:58,684 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 106 transitions. [2023-02-15 10:36:58,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 10:36:58,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:58,687 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-02-15 10:36:58,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 10:36:58,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:58,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:58,688 INFO L85 PathProgramCache]: Analyzing trace with hash 680714775, now seen corresponding path program 1 times [2023-02-15 10:36:58,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:58,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572190581] [2023-02-15 10:36:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:36:58,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:58,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572190581] [2023-02-15 10:36:58,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572190581] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:58,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:58,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:36:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222904493] [2023-02-15 10:36:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:58,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:36:58,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:36:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:36:58,752 INFO L87 Difference]: Start difference. First operand 93 states and 106 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-02-15 10:36:58,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:58,822 INFO L93 Difference]: Finished difference Result 139 states and 158 transitions. [2023-02-15 10:36:58,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:36:58,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2023-02-15 10:36:58,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:58,823 INFO L225 Difference]: With dead ends: 139 [2023-02-15 10:36:58,824 INFO L226 Difference]: Without dead ends: 121 [2023-02-15 10:36:58,824 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 [2023-02-15 10:36:58,825 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 44 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:58,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 186 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:36:58,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-15 10:36:58,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 113. [2023-02-15 10:36:58,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 112 states have internal predecessors, (133), 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) [2023-02-15 10:36:58,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 133 transitions. [2023-02-15 10:36:58,836 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 133 transitions. Word has length 26 [2023-02-15 10:36:58,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:58,836 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 133 transitions. [2023-02-15 10:36:58,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2023-02-15 10:36:58,836 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 133 transitions. [2023-02-15 10:36:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 10:36:58,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:58,839 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2023-02-15 10:36:58,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 10:36:58,840 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:58,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1502606953, now seen corresponding path program 1 times [2023-02-15 10:36:58,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:58,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581944353] [2023-02-15 10:36:58,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:58,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:36:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:36:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:36:58,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581944353] [2023-02-15 10:36:58,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581944353] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:36:58,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:36:58,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:36:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273011672] [2023-02-15 10:36:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:36:58,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:36:58,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:36:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:36:58,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:36:58,884 INFO L87 Difference]: Start difference. First operand 113 states and 133 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-02-15 10:36:58,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:36:58,917 INFO L93 Difference]: Finished difference Result 113 states and 133 transitions. [2023-02-15 10:36:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:36:58,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-02-15 10:36:58,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:36:58,918 INFO L225 Difference]: With dead ends: 113 [2023-02-15 10:36:58,918 INFO L226 Difference]: Without dead ends: 111 [2023-02-15 10:36:58,918 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 [2023-02-15 10:36:58,919 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 49 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:36:58,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 76 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:36:58,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-15 10:36:58,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-02-15 10:36:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.2358490566037736) internal successors, (131), 110 states have internal predecessors, (131), 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) [2023-02-15 10:36:58,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2023-02-15 10:36:58,929 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 26 [2023-02-15 10:36:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:36:58,929 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2023-02-15 10:36:58,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-02-15 10:36:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2023-02-15 10:36:58,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 10:36:58,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:36:58,931 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-02-15 10:36:58,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 10:36:58,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:36:58,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:36:58,932 INFO L85 PathProgramCache]: Analyzing trace with hash -988757936, now seen corresponding path program 1 times [2023-02-15 10:36:58,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:36:58,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180940303] [2023-02-15 10:36:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:36:58,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:36:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:00,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:00,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180940303] [2023-02-15 10:37:00,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180940303] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:37:00,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:37:00,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:37:00,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473784588] [2023-02-15 10:37:00,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:37:00,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:37:00,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:00,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:37:00,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:37:00,256 INFO L87 Difference]: Start difference. First operand 111 states and 131 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-02-15 10:37:00,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:00,527 INFO L93 Difference]: Finished difference Result 268 states and 308 transitions. [2023-02-15 10:37:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:37:00,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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 [2023-02-15 10:37:00,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:00,529 INFO L225 Difference]: With dead ends: 268 [2023-02-15 10:37:00,529 INFO L226 Difference]: Without dead ends: 266 [2023-02-15 10:37:00,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:37:00,530 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 263 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:00,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 384 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:37:00,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-02-15 10:37:00,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 114. [2023-02-15 10:37:00,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.2293577981651376) internal successors, (134), 113 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2023-02-15 10:37:00,543 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 27 [2023-02-15 10:37:00,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:00,544 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2023-02-15 10:37:00,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 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) [2023-02-15 10:37:00,544 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2023-02-15 10:37:00,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 10:37:00,544 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:00,544 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, 1, 1] [2023-02-15 10:37:00,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 10:37:00,545 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:00,545 INFO L85 PathProgramCache]: Analyzing trace with hash -937634650, now seen corresponding path program 1 times [2023-02-15 10:37:00,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:00,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69543024] [2023-02-15 10:37:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:00,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69543024] [2023-02-15 10:37:00,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69543024] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:37:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096967150] [2023-02-15 10:37:00,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:00,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:37:00,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:37:00,643 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) [2023-02-15 10:37:00,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:37:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:00,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-15 10:37:00,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:37:00,758 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 11 treesize of output 7 [2023-02-15 10:37:00,762 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 11 treesize of output 7 [2023-02-15 10:37:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:00,790 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 21 treesize of output 20 [2023-02-15 10:37:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:00,796 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 21 treesize of output 20 [2023-02-15 10:37:00,863 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 [2023-02-15 10:37:00,866 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 [2023-02-15 10:37:00,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:00,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:37:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:00,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096967150] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:37:00,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:37:00,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2023-02-15 10:37:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708451758] [2023-02-15 10:37:00,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:37:00,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:37:00,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:37:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:37:00,920 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2023-02-15 10:37:01,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:01,044 INFO L93 Difference]: Finished difference Result 199 states and 229 transitions. [2023-02-15 10:37:01,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:37:01,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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 29 [2023-02-15 10:37:01,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:01,046 INFO L225 Difference]: With dead ends: 199 [2023-02-15 10:37:01,046 INFO L226 Difference]: Without dead ends: 139 [2023-02-15 10:37:01,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:37:01,046 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 109 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:01,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 209 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:37:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-15 10:37:01,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 116. [2023-02-15 10:37:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 115 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2023-02-15 10:37:01,060 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 29 [2023-02-15 10:37:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:01,061 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2023-02-15 10:37:01,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 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) [2023-02-15 10:37:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2023-02-15 10:37:01,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 10:37:01,061 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:01,061 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2023-02-15 10:37:01,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:37:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 10:37:01,266 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2010394174, now seen corresponding path program 1 times [2023-02-15 10:37:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:01,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188136761] [2023-02-15 10:37:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:01,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:01,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188136761] [2023-02-15 10:37:01,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188136761] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:37:01,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:37:01,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:37:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010743428] [2023-02-15 10:37:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:37:01,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:37:01,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:01,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:37:01,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:37:01,440 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:01,594 INFO L93 Difference]: Finished difference Result 159 states and 176 transitions. [2023-02-15 10:37:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:37:01,595 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-15 10:37:01,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:01,595 INFO L225 Difference]: With dead ends: 159 [2023-02-15 10:37:01,595 INFO L226 Difference]: Without dead ends: 139 [2023-02-15 10:37:01,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:37:01,596 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 63 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:01,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 290 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:37:01,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-15 10:37:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 115. [2023-02-15 10:37:01,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.2) internal successors, (132), 114 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) [2023-02-15 10:37:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2023-02-15 10:37:01,610 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 29 [2023-02-15 10:37:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2023-02-15 10:37:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2023-02-15 10:37:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 10:37:01,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:01,611 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-02-15 10:37:01,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 10:37:01,611 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:01,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:01,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1521997910, now seen corresponding path program 1 times [2023-02-15 10:37:01,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:01,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595816662] [2023-02-15 10:37:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:01,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595816662] [2023-02-15 10:37:01,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595816662] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:37:01,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:37:01,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:37:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753891356] [2023-02-15 10:37:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:37:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:37:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:37:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:37:01,649 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-02-15 10:37:01,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:01,673 INFO L93 Difference]: Finished difference Result 220 states and 257 transitions. [2023-02-15 10:37:01,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:37:01,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2023-02-15 10:37:01,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:01,674 INFO L225 Difference]: With dead ends: 220 [2023-02-15 10:37:01,674 INFO L226 Difference]: Without dead ends: 165 [2023-02-15 10:37:01,674 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 [2023-02-15 10:37:01,674 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 26 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:01,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:37:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-02-15 10:37:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 138. [2023-02-15 10:37:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 137 states have internal predecessors, (161), 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) [2023-02-15 10:37:01,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2023-02-15 10:37:01,690 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 31 [2023-02-15 10:37:01,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:01,691 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2023-02-15 10:37:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-02-15 10:37:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2023-02-15 10:37:01,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-15 10:37:01,691 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:01,691 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, 1, 1, 1, 1, 1] [2023-02-15 10:37:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 10:37:01,692 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:01,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 914215427, now seen corresponding path program 1 times [2023-02-15 10:37:01,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:01,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630974359] [2023-02-15 10:37:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630974359] [2023-02-15 10:37:01,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630974359] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:37:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187811795] [2023-02-15 10:37:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:01,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:37:01,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:37:01,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 10:37:01,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:37:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:01,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-15 10:37:01,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:37:01,867 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 11 treesize of output 7 [2023-02-15 10:37:01,870 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 11 treesize of output 7 [2023-02-15 10:37:01,882 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 0 case distinctions, treesize of input 21 treesize of output 20 [2023-02-15 10:37:01,886 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 21 treesize of output 20 [2023-02-15 10:37:01,932 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 [2023-02-15 10:37:01,934 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 [2023-02-15 10:37:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:37:01,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:37:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:37:02,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187811795] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:37:02,000 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:37:02,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 6 [2023-02-15 10:37:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334507289] [2023-02-15 10:37:02,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:37:02,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:37:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:37:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:37:02,001 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2023-02-15 10:37:02,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:02,171 INFO L93 Difference]: Finished difference Result 247 states and 282 transitions. [2023-02-15 10:37:02,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:37:02,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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 32 [2023-02-15 10:37:02,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:02,172 INFO L225 Difference]: With dead ends: 247 [2023-02-15 10:37:02,172 INFO L226 Difference]: Without dead ends: 216 [2023-02-15 10:37:02,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:37:02,173 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 95 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:02,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 286 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:37:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-02-15 10:37:02,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 165. [2023-02-15 10:37:02,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.2375) internal successors, (198), 164 states have internal predecessors, (198), 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) [2023-02-15 10:37:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2023-02-15 10:37:02,198 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 32 [2023-02-15 10:37:02,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:02,198 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2023-02-15 10:37:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 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) [2023-02-15 10:37:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2023-02-15 10:37:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 10:37:02,199 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:02,199 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2023-02-15 10:37:02,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:37:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 10:37:02,404 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:02,405 INFO L85 PathProgramCache]: Analyzing trace with hash 191981961, now seen corresponding path program 1 times [2023-02-15 10:37:02,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:02,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37202912] [2023-02-15 10:37:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:02,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:02,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37202912] [2023-02-15 10:37:02,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37202912] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:37:02,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:37:02,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:37:02,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019864200] [2023-02-15 10:37:02,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:37:02,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:37:02,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:02,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:37:02,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:37:02,484 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:02,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:02,555 INFO L93 Difference]: Finished difference Result 231 states and 274 transitions. [2023-02-15 10:37:02,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:37:02,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-15 10:37:02,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:02,556 INFO L225 Difference]: With dead ends: 231 [2023-02-15 10:37:02,556 INFO L226 Difference]: Without dead ends: 117 [2023-02-15 10:37:02,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:37:02,557 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 24 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:02,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 188 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:37:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-15 10:37:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-02-15 10:37:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.1592920353982301) internal successors, (131), 116 states have internal predecessors, (131), 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) [2023-02-15 10:37:02,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 131 transitions. [2023-02-15 10:37:02,572 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 131 transitions. Word has length 35 [2023-02-15 10:37:02,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:02,572 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 131 transitions. [2023-02-15 10:37:02,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 10:37:02,572 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 131 transitions. [2023-02-15 10:37:02,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 10:37:02,572 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:02,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:37:02,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 10:37:02,573 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:02,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1562646056, now seen corresponding path program 1 times [2023-02-15 10:37:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:02,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277984480] [2023-02-15 10:37:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:02,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:02,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277984480] [2023-02-15 10:37:02,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277984480] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:37:02,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241231143] [2023-02-15 10:37:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:02,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:37:02,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:37:02,976 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) [2023-02-15 10:37:02,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:37:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:03,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-15 10:37:03,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:37:03,104 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 [2023-02-15 10:37:03,127 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 [2023-02-15 10:37:03,130 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 [2023-02-15 10:37:03,216 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-15 10:37:03,216 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 [2023-02-15 10:37:03,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:03,223 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 24 treesize of output 26 [2023-02-15 10:37:03,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:03,230 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 24 treesize of output 26 [2023-02-15 10:37:03,237 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 23 treesize of output 23 [2023-02-15 10:37:03,245 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 23 treesize of output 23 [2023-02-15 10:37:03,366 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-15 10:37:03,367 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 38 treesize of output 37 [2023-02-15 10:37:03,377 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 27 treesize of output 27 [2023-02-15 10:37:03,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:03,535 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-02-15 10:37:03,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:03,541 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:37:03,541 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-02-15 10:37:03,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:03,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:37:03,610 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_978 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_978) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_979 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_979) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)))) is different from false [2023-02-15 10:37:07,448 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:07,452 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:37:07,453 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 25 treesize of output 31 [2023-02-15 10:37:07,457 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:07,459 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:37:07,459 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2023-02-15 10:37:07,462 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 [2023-02-15 10:37:07,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:07,467 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-02-15 10:37:07,468 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 25 treesize of output 1 [2023-02-15 10:37:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:07,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241231143] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:37:07,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:37:07,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2023-02-15 10:37:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020946698] [2023-02-15 10:37:07,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:37:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-15 10:37:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:37:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-15 10:37:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=369, Unknown=2, NotChecked=40, Total=506 [2023-02-15 10:37:07,491 INFO L87 Difference]: Start difference. First operand 117 states and 131 transitions. Second operand has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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) [2023-02-15 10:37:08,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:37:08,658 INFO L93 Difference]: Finished difference Result 311 states and 350 transitions. [2023-02-15 10:37:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 10:37:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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 36 [2023-02-15 10:37:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:37:08,659 INFO L225 Difference]: With dead ends: 311 [2023-02-15 10:37:08,659 INFO L226 Difference]: Without dead ends: 251 [2023-02-15 10:37:08,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=339, Invalid=922, Unknown=3, NotChecked=68, Total=1332 [2023-02-15 10:37:08,660 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 586 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 64 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:37:08,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 686 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 428 Invalid, 6 Unknown, 124 Unchecked, 0.6s Time] [2023-02-15 10:37:08,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-02-15 10:37:08,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 138. [2023-02-15 10:37:08,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 137 states have internal predecessors, (155), 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) [2023-02-15 10:37:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 155 transitions. [2023-02-15 10:37:08,675 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 155 transitions. Word has length 36 [2023-02-15 10:37:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:37:08,676 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 155 transitions. [2023-02-15 10:37:08,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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) [2023-02-15 10:37:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 155 transitions. [2023-02-15 10:37:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 10:37:08,676 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:37:08,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:37:08,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:37:08,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:37:08,881 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2023-02-15 10:37:08,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:37:08,882 INFO L85 PathProgramCache]: Analyzing trace with hash 878042536, now seen corresponding path program 1 times [2023-02-15 10:37:08,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:37:08,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785001175] [2023-02-15 10:37:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:08,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:37:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:37:10,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785001175] [2023-02-15 10:37:10,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785001175] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:37:10,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328137327] [2023-02-15 10:37:10,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:37:10,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:37:10,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:37:10,537 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) [2023-02-15 10:37:10,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 10:37:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:37:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 79 conjunts are in the unsatisfiable core [2023-02-15 10:37:10,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:37:10,695 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 [2023-02-15 10:37:10,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:10,762 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2023-02-15 10:37:10,763 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 326 [2023-02-15 10:37:10,817 INFO L321 Elim1Store]: treesize reduction 23, result has 56.6 percent of original size [2023-02-15 10:37:10,818 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 491 treesize of output 404 [2023-02-15 10:37:10,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:10,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:10,889 INFO L321 Elim1Store]: treesize reduction 575, result has 3.8 percent of original size [2023-02-15 10:37:10,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 368 treesize of output 516 [2023-02-15 10:37:10,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:10,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:10,958 INFO L321 Elim1Store]: treesize reduction 404, result has 5.4 percent of original size [2023-02-15 10:37:10,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 393 treesize of output 457 [2023-02-15 10:37:10,972 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 107 treesize of output 67 [2023-02-15 10:37:10,979 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:10,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 123 treesize of output 82 [2023-02-15 10:37:11,008 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-15 10:37:11,008 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 [2023-02-15 10:37:11,019 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 16 treesize of output 15 [2023-02-15 10:37:11,031 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 16 treesize of output 15 [2023-02-15 10:37:11,041 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 16 treesize of output 15 [2023-02-15 10:37:11,098 WARN L193 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 119 treesize of output 105 [2023-02-15 10:37:11,198 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 13 treesize of output 3 [2023-02-15 10:37:11,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-02-15 10:37:11,317 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,330 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 13 treesize of output 12 [2023-02-15 10:37:11,359 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 10 treesize of output 9 [2023-02-15 10:37:11,472 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,483 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,546 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2023-02-15 10:37:11,559 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,572 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,584 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:11,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:11,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2023-02-15 10:37:11,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 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 171 treesize of output 208 [2023-02-15 10:37:11,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:11,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:11,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 41 treesize of output 3 [2023-02-15 10:37:11,878 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 13 treesize of output 3 [2023-02-15 10:37:11,891 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:11,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-02-15 10:37:11,988 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 13 treesize of output 3 [2023-02-15 10:37:11,996 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2023-02-15 10:37:12,005 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-15 10:37:12,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:12,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2023-02-15 10:37:12,021 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 13 treesize of output 3 [2023-02-15 10:37:12,024 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 13 treesize of output 3 [2023-02-15 10:37:12,197 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2023-02-15 10:37:12,198 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 4 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 62 [2023-02-15 10:37:12,203 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:12,217 INFO L321 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2023-02-15 10:37:12,217 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 62 treesize of output 58 [2023-02-15 10:37:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:12,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:12,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 39 [2023-02-15 10:37:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:12,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-15 10:37:12,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 33 [2023-02-15 10:37:12,245 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-15 10:37:12,246 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 16 treesize of output 18 [2023-02-15 10:37:12,505 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:12,535 INFO L321 Elim1Store]: treesize reduction 82, result has 21.9 percent of original size [2023-02-15 10:37:12,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 106 treesize of output 101 [2023-02-15 10:37:12,544 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:12,567 INFO L321 Elim1Store]: treesize reduction 112, result has 23.8 percent of original size [2023-02-15 10:37:12,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 101 treesize of output 123 [2023-02-15 10:37:13,038 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-15 10:37:13,051 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2023-02-15 10:37:13,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 80 treesize of output 52 [2023-02-15 10:37:13,062 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-02-15 10:37:13,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-02-15 10:37:13,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:37:13,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:37:13,305 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:37:13,306 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 175 treesize of output 169 [2023-02-15 10:37:13,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-15 10:37:13,310 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 163 treesize of output 157 [2023-02-15 10:37:21,798 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 10:37:32,875 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2023-02-15 10:37:32,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 21421 treesize of output 17079 [2023-02-15 10:37:39,844 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 46 DAG size of output: 36 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-02-15 10:37:39,844 INFO L321 Elim1Store]: treesize reduction 62, result has 54.4 percent of original size [2023-02-15 10:37:39,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 58189 treesize of output 42255