./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/forester-heap/sll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 14:22:10,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 14:22:10,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 14:22:10,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 14:22:10,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 14:22:10,364 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 14:22:10,365 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 14:22:10,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 14:22:10,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 14:22:10,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 14:22:10,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 14:22:10,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 14:22:10,375 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 14:22:10,378 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 14:22:10,379 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 14:22:10,380 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 14:22:10,381 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 14:22:10,382 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 14:22:10,383 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 14:22:10,387 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 14:22:10,388 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 14:22:10,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 14:22:10,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 14:22:10,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 14:22:10,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 14:22:10,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 14:22:10,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 14:22:10,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 14:22:10,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 14:22:10,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 14:22:10,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 14:22:10,400 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 14:22:10,401 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 14:22:10,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 14:22:10,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 14:22:10,402 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 14:22:10,403 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 14:22:10,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 14:22:10,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 14:22:10,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 14:22:10,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 14:22:10,405 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 14:22:10,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 14:22:10,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 14:22:10,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 14:22:10,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 14:22:10,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 14:22:10,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 14:22:10,436 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 14:22:10,436 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 14:22:10,436 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 14:22:10,437 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 14:22:10,437 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 14:22:10,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 14:22:10,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 14:22:10,439 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 14:22:10,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 14:22:10,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 14:22:10,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 14:22:10,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 14:22:10,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:22:10,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 14:22:10,440 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 14:22:10,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 14:22:10,441 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 14:22:10,441 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2023-02-18 14:22:10,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 14:22:10,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 14:22:10,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 14:22:10,619 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 14:22:10,619 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 14:22:10,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-02-18 14:22:11,617 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 14:22:11,776 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 14:22:11,776 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2023-02-18 14:22:11,782 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9469176/c7217b68dd144e5f9c69eef9740c6e54/FLAG3b46d5feb [2023-02-18 14:22:11,792 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9469176/c7217b68dd144e5f9c69eef9740c6e54 [2023-02-18 14:22:11,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 14:22:11,794 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 14:22:11,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 14:22:11,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 14:22:11,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 14:22:11,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:22:11" (1/1) ... [2023-02-18 14:22:11,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce4c7fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:11, skipping insertion in model container [2023-02-18 14:22:11,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 02:22:11" (1/1) ... [2023-02-18 14:22:11,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 14:22:11,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 14:22:11,954 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-02-18 14:22:11,964 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-02-18 14:22:11,965 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-02-18 14:22:11,976 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-02-18 14:22:11,976 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-02-18 14:22:11,979 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-02-18 14:22:11,979 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-02-18 14:22:11,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:22:12,003 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 14:22:12,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2023-02-18 14:22:12,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2023-02-18 14:22:12,043 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2023-02-18 14:22:12,046 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2023-02-18 14:22:12,046 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2023-02-18 14:22:12,047 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2023-02-18 14:22:12,047 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2023-02-18 14:22:12,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 14:22:12,078 INFO L208 MainTranslator]: Completed translation [2023-02-18 14:22:12,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12 WrapperNode [2023-02-18 14:22:12,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 14:22:12,079 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 14:22:12,079 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 14:22:12,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 14:22:12,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,109 INFO L138 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2023-02-18 14:22:12,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 14:22:12,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 14:22:12,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 14:22:12,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 14:22:12,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,128 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 14:22:12,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 14:22:12,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 14:22:12,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 14:22:12,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (1/1) ... [2023-02-18 14:22:12,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 14:22:12,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:22:12,172 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) [2023-02-18 14:22:12,177 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 [2023-02-18 14:22:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 14:22:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 14:22:12,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 14:22:12,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 14:22:12,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 14:22:12,268 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 14:22:12,269 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 14:22:12,466 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 14:22:12,471 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 14:22:12,471 INFO L300 CfgBuilder]: Removed 20 assume(true) statements. [2023-02-18 14:22:12,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:22:12 BoogieIcfgContainer [2023-02-18 14:22:12,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 14:22:12,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 14:22:12,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 14:22:12,485 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 14:22:12,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 02:22:11" (1/3) ... [2023-02-18 14:22:12,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3c6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:22:12, skipping insertion in model container [2023-02-18 14:22:12,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 02:22:12" (2/3) ... [2023-02-18 14:22:12,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c3c6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 02:22:12, skipping insertion in model container [2023-02-18 14:22:12,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 02:22:12" (3/3) ... [2023-02-18 14:22:12,487 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2023-02-18 14:22:12,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 14:22:12,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-02-18 14:22:12,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 14:22:12,545 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;@12408d6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 14:22:12,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-02-18 14:22:12,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 14:22:12,552 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:12,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 14:22:12,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:12,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash 890153286, now seen corresponding path program 1 times [2023-02-18 14:22:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:12,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343115705] [2023-02-18 14:22:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:12,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:12,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:12,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343115705] [2023-02-18 14:22:12,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343115705] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:22:12,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:22:12,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 14:22:12,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456807390] [2023-02-18 14:22:12,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:22:12,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 14:22:12,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 14:22:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:22:12,691 INFO L87 Difference]: Start difference. First operand has 62 states, 54 states have (on average 1.8518518518518519) internal successors, (100), 61 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:12,706 INFO L93 Difference]: Finished difference Result 118 states and 190 transitions. [2023-02-18 14:22:12,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 14:22:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 14:22:12,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:12,712 INFO L225 Difference]: With dead ends: 118 [2023-02-18 14:22:12,712 INFO L226 Difference]: Without dead ends: 56 [2023-02-18 14:22:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 14:22:12,716 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:12,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:22:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-18 14:22:12,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-18 14:22:12,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.346938775510204) internal successors, (66), 55 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2023-02-18 14:22:12,743 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 6 [2023-02-18 14:22:12,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:12,744 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2023-02-18 14:22:12,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,744 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2023-02-18 14:22:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 14:22:12,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:12,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:12,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 14:22:12,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1806859191, now seen corresponding path program 1 times [2023-02-18 14:22:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:12,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416716233] [2023-02-18 14:22:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:12,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:12,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:12,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:12,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:12,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416716233] [2023-02-18 14:22:12,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416716233] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:22:12,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:22:12,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 14:22:12,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664800538] [2023-02-18 14:22:12,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:22:12,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 14:22:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:12,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 14:22:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 14:22:12,852 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:12,900 INFO L93 Difference]: Finished difference Result 115 states and 138 transitions. [2023-02-18 14:22:12,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 14:22:12,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 14:22:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:12,901 INFO L225 Difference]: With dead ends: 115 [2023-02-18 14:22:12,901 INFO L226 Difference]: Without dead ends: 61 [2023-02-18 14:22:12,902 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 [2023-02-18 14:22:12,903 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 33 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:12,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 86 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:22:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-18 14:22:12,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2023-02-18 14:22:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 53 states have (on average 1.3396226415094339) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-18 14:22:12,908 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 7 [2023-02-18 14:22:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:12,909 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-18 14:22:12,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-18 14:22:12,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 14:22:12,910 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:12,910 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:12,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 14:22:12,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 443319948, now seen corresponding path program 1 times [2023-02-18 14:22:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:12,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835065251] [2023-02-18 14:22:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:13,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 14:22:13,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:13,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835065251] [2023-02-18 14:22:13,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835065251] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:22:13,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:22:13,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 14:22:13,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240069425] [2023-02-18 14:22:13,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:22:13,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 14:22:13,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 14:22:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 14:22:13,093 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:13,182 INFO L93 Difference]: Finished difference Result 99 states and 117 transitions. [2023-02-18 14:22:13,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 14:22:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-18 14:22:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:13,183 INFO L225 Difference]: With dead ends: 99 [2023-02-18 14:22:13,184 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 14:22:13,184 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 [2023-02-18 14:22:13,185 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 153 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 75 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 14:22:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 14:22:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 58. [2023-02-18 14:22:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2023-02-18 14:22:13,191 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 11 [2023-02-18 14:22:13,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:13,191 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2023-02-18 14:22:13,191 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) [2023-02-18 14:22:13,191 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2023-02-18 14:22:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 14:22:13,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:13,192 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 14:22:13,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2064961448, now seen corresponding path program 1 times [2023-02-18 14:22:13,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:13,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599246544] [2023-02-18 14:22:13,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:13,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:13,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:13,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599246544] [2023-02-18 14:22:13,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599246544] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:22:13,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505242084] [2023-02-18 14:22:13,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:13,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:13,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:22:13,744 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) [2023-02-18 14:22:13,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 14:22:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:13,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 14:22:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:22:13,882 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 [2023-02-18 14:22:13,888 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 [2023-02-18 14:22:13,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:13,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-02-18 14:22:13,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:13,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 32 [2023-02-18 14:22:13,930 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 [2023-02-18 14:22:13,935 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:13,935 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 15 [2023-02-18 14:22:13,955 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 32 treesize of output 30 [2023-02-18 14:22:14,004 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 19 treesize of output 7 [2023-02-18 14:22:14,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:14,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:22:14,141 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:14,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505242084] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:22:14,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:22:14,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-02-18 14:22:14,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846492031] [2023-02-18 14:22:14,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:22:14,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 14:22:14,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 14:22:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=229, Unknown=4, NotChecked=0, Total=272 [2023-02-18 14:22:14,143 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:15,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:15,289 INFO L93 Difference]: Finished difference Result 251 states and 305 transitions. [2023-02-18 14:22:15,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 14:22:15,289 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 14:22:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:15,295 INFO L225 Difference]: With dead ends: 251 [2023-02-18 14:22:15,295 INFO L226 Difference]: Without dead ends: 195 [2023-02-18 14:22:15,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=1019, Unknown=4, NotChecked=0, Total=1260 [2023-02-18 14:22:15,300 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 313 mSDsluCounter, 931 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:15,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1016 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-18 14:22:15,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-02-18 14:22:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 80. [2023-02-18 14:22:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 74 states have (on average 1.337837837837838) internal successors, (99), 79 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 99 transitions. [2023-02-18 14:22:15,328 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 99 transitions. Word has length 18 [2023-02-18 14:22:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:15,328 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 99 transitions. [2023-02-18 14:22:15,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 99 transitions. [2023-02-18 14:22:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 14:22:15,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:15,332 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:15,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 14:22:15,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:15,537 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:15,538 INFO L85 PathProgramCache]: Analyzing trace with hash -644381054, now seen corresponding path program 1 times [2023-02-18 14:22:15,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:15,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291404878] [2023-02-18 14:22:15,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:15,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:15,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:15,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:15,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291404878] [2023-02-18 14:22:15,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291404878] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:22:15,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655317544] [2023-02-18 14:22:15,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:15,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:15,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:22:15,866 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) [2023-02-18 14:22:15,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 14:22:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:15,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 14:22:15,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:22:15,948 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 [2023-02-18 14:22:15,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:15,962 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:15,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 14:22:15,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 14:22:15,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:15,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:15,973 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 14:22:15,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 14:22:15,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:15,984 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 15 [2023-02-18 14:22:16,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-02-18 14:22:16,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 14:22:16,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 14:22:16,113 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 [2023-02-18 14:22:16,116 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 117 treesize of output 97 [2023-02-18 14:22:16,136 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:22:16,137 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:16,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2023-02-18 14:22:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:16,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:22:16,181 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 77 treesize of output 57 [2023-02-18 14:22:16,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:16,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 197 treesize of output 142 [2023-02-18 14:22:16,248 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:16,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 126 [2023-02-18 14:22:16,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:16,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 149 [2023-02-18 14:22:16,257 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:16,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 215 [2023-02-18 14:22:16,260 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 199 treesize of output 197 [2023-02-18 14:22:16,266 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 197 treesize of output 195 [2023-02-18 14:22:16,269 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 195 treesize of output 191 [2023-02-18 14:22:16,271 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 191 treesize of output 189 [2023-02-18 14:22:16,274 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 189 treesize of output 185 [2023-02-18 14:22:16,280 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 185 treesize of output 179 [2023-02-18 14:22:16,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:16,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655317544] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:22:16,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:22:16,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2023-02-18 14:22:16,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013425352] [2023-02-18 14:22:16,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:22:16,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 14:22:16,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:16,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 14:22:16,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=200, Unknown=1, NotChecked=0, Total=240 [2023-02-18 14:22:16,358 INFO L87 Difference]: Start difference. First operand 80 states and 99 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:16,670 INFO L93 Difference]: Finished difference Result 118 states and 147 transitions. [2023-02-18 14:22:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 14:22:16,670 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 14:22:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:16,671 INFO L225 Difference]: With dead ends: 118 [2023-02-18 14:22:16,671 INFO L226 Difference]: Without dead ends: 116 [2023-02-18 14:22:16,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=340, Unknown=1, NotChecked=0, Total=420 [2023-02-18 14:22:16,672 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 130 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:16,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 409 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 14:22:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-18 14:22:16,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 92. [2023-02-18 14:22:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 91 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2023-02-18 14:22:16,682 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 21 [2023-02-18 14:22:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:16,682 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2023-02-18 14:22:16,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:16,682 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2023-02-18 14:22:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 14:22:16,683 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:16,683 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:16,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 14:22:16,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:16,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:16,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:16,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2029850711, now seen corresponding path program 1 times [2023-02-18 14:22:16,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:16,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649541021] [2023-02-18 14:22:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:16,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:17,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:17,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649541021] [2023-02-18 14:22:17,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649541021] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:22:17,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651474485] [2023-02-18 14:22:17,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:17,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:17,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:22:17,578 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) [2023-02-18 14:22:17,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 14:22:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:17,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 71 conjunts are in the unsatisfiable core [2023-02-18 14:22:17,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:22:17,659 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 [2023-02-18 14:22:17,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:17,665 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 14:22:17,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 14:22:17,670 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,671 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 39 [2023-02-18 14:22:17,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:17,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 14:22:17,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 14:22:17,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 14:22:17,694 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 30 treesize of output 28 [2023-02-18 14:22:17,714 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 [2023-02-18 14:22:17,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2023-02-18 14:22:17,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-02-18 14:22:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,728 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 21 treesize of output 26 [2023-02-18 14:22:17,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 14:22:17,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,734 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 30 treesize of output 38 [2023-02-18 14:22:17,751 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 79 [2023-02-18 14:22:17,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-18 14:22:17,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:17,758 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 23 treesize of output 28 [2023-02-18 14:22:17,761 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 55 treesize of output 43 [2023-02-18 14:22:17,790 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 74 treesize of output 54 [2023-02-18 14:22:17,792 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:22:17,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 17 [2023-02-18 14:22:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:17,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:22:17,826 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_370) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (+ 4 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2023-02-18 14:22:17,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 54 [2023-02-18 14:22:17,858 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 95 [2023-02-18 14:22:17,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,861 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 73 treesize of output 73 [2023-02-18 14:22:17,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2023-02-18 14:22:17,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-18 14:22:17,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2023-02-18 14:22:17,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 105 treesize of output 106 [2023-02-18 14:22:17,924 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 90 [2023-02-18 14:22:17,927 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 233 [2023-02-18 14:22:17,930 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 215 treesize of output 211 [2023-02-18 14:22:17,956 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 211 treesize of output 209 [2023-02-18 14:22:17,963 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 346 treesize of output 345 [2023-02-18 14:22:17,966 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 329 treesize of output 325 [2023-02-18 14:22:17,969 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 325 treesize of output 317 [2023-02-18 14:22:17,974 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:17,974 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 317 treesize of output 320 [2023-02-18 14:22:17,978 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 311 treesize of output 303 [2023-02-18 14:22:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-02-18 14:22:18,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651474485] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:22:18,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:22:18,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-02-18 14:22:18,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58147524] [2023-02-18 14:22:18,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:22:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 14:22:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 14:22:18,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=348, Unknown=3, NotChecked=38, Total=462 [2023-02-18 14:22:18,431 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 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) [2023-02-18 14:22:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:19,419 INFO L93 Difference]: Finished difference Result 211 states and 256 transitions. [2023-02-18 14:22:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 14:22:19,419 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 14:22:19,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:19,420 INFO L225 Difference]: With dead ends: 211 [2023-02-18 14:22:19,420 INFO L226 Difference]: Without dead ends: 176 [2023-02-18 14:22:19,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=137, Invalid=619, Unknown=4, NotChecked=52, Total=812 [2023-02-18 14:22:19,421 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 287 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 31 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:19,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 479 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 364 Invalid, 6 Unknown, 136 Unchecked, 0.8s Time] [2023-02-18 14:22:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-02-18 14:22:19,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 106. [2023-02-18 14:22:19,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 100 states have (on average 1.32) internal successors, (132), 105 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:19,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 132 transitions. [2023-02-18 14:22:19,431 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 132 transitions. Word has length 25 [2023-02-18 14:22:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:19,432 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 132 transitions. [2023-02-18 14:22:19,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 22 states have internal predecessors, (58), 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) [2023-02-18 14:22:19,432 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 132 transitions. [2023-02-18 14:22:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 14:22:19,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:19,433 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:19,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 14:22:19,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:19,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:19,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1220504085, now seen corresponding path program 1 times [2023-02-18 14:22:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:19,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608743640] [2023-02-18 14:22:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:19,720 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 14:22:19,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608743640] [2023-02-18 14:22:19,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608743640] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 14:22:19,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 14:22:19,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 14:22:19,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940896015] [2023-02-18 14:22:19,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 14:22:19,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 14:22:19,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:22:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 14:22:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 14:22:19,723 INFO L87 Difference]: Start difference. First operand 106 states and 132 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:19,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:22:19,783 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2023-02-18 14:22:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 14:22:19,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 14:22:19,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:22:19,784 INFO L225 Difference]: With dead ends: 155 [2023-02-18 14:22:19,784 INFO L226 Difference]: Without dead ends: 117 [2023-02-18 14:22:19,784 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 [2023-02-18 14:22:19,785 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 14:22:19,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 14:22:19,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-18 14:22:19,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2023-02-18 14:22:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 109 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2023-02-18 14:22:19,798 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 25 [2023-02-18 14:22:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:22:19,798 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2023-02-18 14:22:19,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:22:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2023-02-18 14:22:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 14:22:19,799 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:22:19,799 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:22:19,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 14:22:19,799 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:22:19,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:22:19,800 INFO L85 PathProgramCache]: Analyzing trace with hash 836449433, now seen corresponding path program 1 times [2023-02-18 14:22:19,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:22:19,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548778266] [2023-02-18 14:22:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:19,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:22:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:22:20,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548778266] [2023-02-18 14:22:20,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548778266] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:22:20,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499721737] [2023-02-18 14:22:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:22:20,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:22:20,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:22:20,196 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) [2023-02-18 14:22:20,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 14:22:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:22:20,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 64 conjunts are in the unsatisfiable core [2023-02-18 14:22:20,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:22:20,296 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 [2023-02-18 14:22:20,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:20,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2023-02-18 14:22:20,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-02-18 14:22:20,306 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,307 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 39 [2023-02-18 14:22:20,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2023-02-18 14:22:20,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 14:22:20,322 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 43 treesize of output 45 [2023-02-18 14:22:20,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-18 14:22:20,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-18 14:22:20,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:20,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 148 [2023-02-18 14:22:20,357 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 30 treesize of output 30 [2023-02-18 14:22:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:20,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:22:20,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 56 [2023-02-18 14:22:20,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,368 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 58 treesize of output 66 [2023-02-18 14:22:20,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-02-18 14:22:20,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 144 [2023-02-18 14:22:20,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 215 treesize of output 219 [2023-02-18 14:22:20,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 140 [2023-02-18 14:22:20,486 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 177 [2023-02-18 14:22:20,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2023-02-18 14:22:20,491 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 99 treesize of output 93 [2023-02-18 14:22:20,509 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:22:20,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2023-02-18 14:22:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:22:20,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:22:20,649 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 51 [2023-02-18 14:22:20,653 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 89 [2023-02-18 14:22:20,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2023-02-18 14:22:20,693 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 51 [2023-02-18 14:22:20,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 89 [2023-02-18 14:22:20,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 17 [2023-02-18 14:22:20,833 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 392 treesize of output 369 [2023-02-18 14:22:20,836 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 452 treesize of output 373 [2023-02-18 14:22:20,841 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 575 treesize of output 434 [2023-02-18 14:22:20,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:22:20,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1095 treesize of output 1046 [2023-02-18 14:22:20,854 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 1030 treesize of output 1026 [2023-02-18 14:22:20,858 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 1026 treesize of output 1022 [2023-02-18 14:22:20,862 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 1022 treesize of output 1020 [2023-02-18 14:22:20,866 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 1020 treesize of output 1012 [2023-02-18 14:22:20,870 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 1012 treesize of output 1008 [2023-02-18 14:22:20,874 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 1008 treesize of output 1006 [2023-02-18 14:22:20,878 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 1006 treesize of output 1002 [2023-02-18 14:22:20,881 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 1002 treesize of output 1000 [2023-02-18 14:22:20,885 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 1000 treesize of output 996 [2023-02-18 14:22:20,889 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 996 treesize of output 992 [2023-02-18 14:22:20,893 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 992 treesize of output 990 [2023-02-18 14:22:20,897 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 990 treesize of output 988 [2023-02-18 14:22:20,900 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 988 treesize of output 984 [2023-02-18 14:22:20,904 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 984 treesize of output 982 [2023-02-18 14:22:20,908 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 982 treesize of output 974 [2023-02-18 14:22:20,912 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 974 treesize of output 970 [2023-02-18 14:22:20,916 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 970 treesize of output 962 [2023-02-18 14:22:20,919 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 962 treesize of output 958 [2023-02-18 14:22:20,923 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 958 treesize of output 946 [2023-02-18 14:22:20,927 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 946 treesize of output 922 [2023-02-18 14:36:03,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:36:03,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499721737] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:36:03,914 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:36:03,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2023-02-18 14:36:03,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534691561] [2023-02-18 14:36:03,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:36:03,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 14:36:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:36:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 14:36:03,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=383, Unknown=5, NotChecked=0, Total=462 [2023-02-18 14:36:03,916 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:05,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:36:05,324 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2023-02-18 14:36:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 14:36:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 14:36:05,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:36:05,325 INFO L225 Difference]: With dead ends: 177 [2023-02-18 14:36:05,325 INFO L226 Difference]: Without dead ends: 175 [2023-02-18 14:36:05,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=818, Unknown=6, NotChecked=0, Total=992 [2023-02-18 14:36:05,342 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 141 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 26 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 14:36:05,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 681 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 584 Invalid, 8 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 14:36:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-02-18 14:36:05,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 103. [2023-02-18 14:36:05,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 102 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2023-02-18 14:36:05,375 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 25 [2023-02-18 14:36:05,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:36:05,376 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2023-02-18 14:36:05,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 22 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:05,376 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2023-02-18 14:36:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 14:36:05,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:36:05,377 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:36:05,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 14:36:05,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:36:05,577 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:36:05,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:36:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2046348832, now seen corresponding path program 1 times [2023-02-18 14:36:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:36:05,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972677724] [2023-02-18 14:36:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:36:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:36:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:36:05,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:36:05,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:36:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972677724] [2023-02-18 14:36:05,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972677724] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:36:05,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94179647] [2023-02-18 14:36:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:36:05,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:36:05,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:36:05,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 14:36:05,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 14:36:05,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:36:05,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-18 14:36:05,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:36:05,993 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 [2023-02-18 14:36:05,995 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 [2023-02-18 14:36:06,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:06,004 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 15 [2023-02-18 14:36:06,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:36:06,006 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 [2023-02-18 14:36:06,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 14:36:06,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-18 14:36:06,042 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:36:06,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-18 14:36:06,045 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:36:06,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-02-18 14:36:06,059 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:06,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 32 [2023-02-18 14:36:06,061 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 [2023-02-18 14:36:06,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:36:06,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:36:06,077 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 40 treesize of output 33 [2023-02-18 14:36:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:36:06,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-02-18 14:36:06,106 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 19 treesize of output 7 [2023-02-18 14:36:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:36:06,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 14:36:06,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-02-18 14:36:06,170 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 47 treesize of output 43 [2023-02-18 14:36:06,173 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~head~0#1.offset| 4))) (and (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_9| Int) (v_ArrVal_718 Int) (v_ArrVal_720 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~x~0#1.base| |v_ULTIMATE.start_main_~tmp~0#1.base_9|) (= (select (select (let ((.cse0 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_9| v_ArrVal_720))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_718))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) 0))) (or (forall ((|v_ULTIMATE.start_main_~tmp~0#1.base_9| Int) (v_ArrVal_718 Int) (v_ArrVal_720 (Array Int Int))) (= (select (select (let ((.cse2 (store |c_#memory_int| |v_ULTIMATE.start_main_~tmp~0#1.base_9| v_ArrVal_720))) (store .cse2 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse2 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_718))) |c_ULTIMATE.start_main_~head~0#1.base|) .cse1) 0)) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) is different from false [2023-02-18 14:36:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:36:06,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94179647] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 14:36:06,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 14:36:06,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 10] total 23 [2023-02-18 14:36:06,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030529880] [2023-02-18 14:36:06,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 14:36:06,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 14:36:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 14:36:06,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 14:36:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=353, Unknown=17, NotChecked=40, Total=506 [2023-02-18 14:36:06,716 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 14:36:07,039 INFO L93 Difference]: Finished difference Result 222 states and 269 transitions. [2023-02-18 14:36:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 14:36:07,040 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 14:36:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 14:36:07,040 INFO L225 Difference]: With dead ends: 222 [2023-02-18 14:36:07,040 INFO L226 Difference]: Without dead ends: 157 [2023-02-18 14:36:07,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=512, Unknown=19, NotChecked=50, Total=756 [2023-02-18 14:36:07,041 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 288 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 14:36:07,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 553 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 345 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2023-02-18 14:36:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-02-18 14:36:07,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 125. [2023-02-18 14:36:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 119 states have (on average 1.2857142857142858) internal successors, (153), 124 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 153 transitions. [2023-02-18 14:36:07,056 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 153 transitions. Word has length 27 [2023-02-18 14:36:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 14:36:07,057 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 153 transitions. [2023-02-18 14:36:07,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 23 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 14:36:07,057 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 153 transitions. [2023-02-18 14:36:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 14:36:07,057 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 14:36:07,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 14:36:07,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 14:36:07,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:36:07,262 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-02-18 14:36:07,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 14:36:07,266 INFO L85 PathProgramCache]: Analyzing trace with hash 485990957, now seen corresponding path program 1 times [2023-02-18 14:36:07,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 14:36:07,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748739187] [2023-02-18 14:36:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:36:07,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 14:36:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:36:07,451 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 14:36:07,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 14:36:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748739187] [2023-02-18 14:36:07,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748739187] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 14:36:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619966710] [2023-02-18 14:36:07,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 14:36:07,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 14:36:07,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 14:36:07,469 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 14:36:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 14:36:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 14:36:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-18 14:36:07,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 14:36:07,581 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 [2023-02-18 14:36:07,590 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:07,591 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 1 case distinctions, treesize of input 27 treesize of output 31 [2023-02-18 14:36:07,594 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:07,594 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 46 treesize of output 67 [2023-02-18 14:36:07,597 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:07,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 59 treesize of output 117 [2023-02-18 14:36:07,601 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 22 treesize of output 20 [2023-02-18 14:36:07,606 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 22 treesize of output 20 [2023-02-18 14:36:07,614 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 181 [2023-02-18 14:36:07,627 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2023-02-18 14:36:07,628 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,636 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:36:07,637 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,640 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,644 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:36:07,646 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,648 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,649 INFO L173 IndexEqualityManager]: detected equality via solver [2023-02-18 14:36:07,650 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:07,654 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 15 [2023-02-18 14:36:07,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 42 [2023-02-18 14:36:07,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-18 14:36:07,717 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 500 treesize of output 396 [2023-02-18 14:36:07,721 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 448 treesize of output 446 [2023-02-18 14:36:07,725 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 446 treesize of output 444 [2023-02-18 14:36:07,730 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 444 treesize of output 442 [2023-02-18 14:36:07,737 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:07,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2023-02-18 14:36:07,749 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-18 14:36:08,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:08,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 28 new quantified variables, introduced 171 case distinctions, treesize of input 652 treesize of output 1875 [2023-02-18 14:36:08,336 INFO L217 Elim1Store]: Index analysis took 182 ms [2023-02-18 14:36:08,339 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-18 14:36:08,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 408 treesize of output 1704