./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:53:31,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:53:31,248 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:53:31,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:53:31,299 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:53:31,300 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:53:31,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:53:31,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:53:31,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:53:31,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:53:31,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:53:31,320 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:53:31,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:53:31,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:53:31,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:53:31,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:53:31,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:53:31,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:53:31,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:53:31,336 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:53:31,338 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:53:31,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:53:31,340 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:53:31,341 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:53:31,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:53:31,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:53:31,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:53:31,346 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:53:31,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:53:31,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:53:31,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:53:31,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:53:31,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:53:31,351 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:53:31,352 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:53:31,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:53:31,353 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:53:31,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:53:31,354 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:53:31,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:53:31,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:53:31,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:53:31,357 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-20 00:53:31,387 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:53:31,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:53:31,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:53:31,389 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:53:31,389 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:53:31,389 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:53:31,390 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:53:31,390 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:53:31,390 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:53:31,391 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:53:31,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-20 00:53:31,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:53:31,392 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:53:31,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:53:31,392 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:53:31,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:53:31,392 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:53:31,393 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:53:31,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:53:31,393 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:53:31,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:53:31,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:53:31,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:53:31,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:53:31,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:53:31,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-20 00:53:31,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-20 00:53:31,395 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:53:31,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:53:31,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:53:31,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-20 00:53:31,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:53:31,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:53:31,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:53:31,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:53:31,678 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:53:31,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-20 00:53:31,726 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5641beb8/bd6b204291184cc0ab24b0c65fd91a63/FLAG87b72bef5 [2022-07-20 00:53:32,405 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:53:32,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-20 00:53:32,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5641beb8/bd6b204291184cc0ab24b0c65fd91a63/FLAG87b72bef5 [2022-07-20 00:53:32,756 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5641beb8/bd6b204291184cc0ab24b0c65fd91a63 [2022-07-20 00:53:32,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:53:32,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:53:32,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:53:32,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:53:32,764 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:53:32,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:53:32" (1/1) ... [2022-07-20 00:53:32,765 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a636806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:32, skipping insertion in model container [2022-07-20 00:53:32,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:53:32" (1/1) ... [2022-07-20 00:53:32,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:53:32,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:53:34,090 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-20 00:53:34,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:53:34,280 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:53:34,471 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-20 00:53:34,480 INFO L158 Benchmark]: Toolchain (without parser) took 1719.03ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 59.5MB in the beginning and 55.6MB in the end (delta: 3.9MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2022-07-20 00:53:34,481 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-20 00:53:34,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1717.08ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 59.5MB in the beginning and 55.6MB in the end (delta: 3.9MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. [2022-07-20 00:53:34,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 56.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1717.08ms. Allocated memory was 100.7MB in the beginning and 136.3MB in the end (delta: 35.7MB). Free memory was 59.5MB in the beginning and 55.6MB in the end (delta: 3.9MB). Peak memory consumption was 47.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-20 00:53:36,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-20 00:53:36,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-20 00:53:36,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-20 00:53:36,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-20 00:53:36,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-20 00:53:36,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-20 00:53:36,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-20 00:53:36,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-20 00:53:36,333 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-20 00:53:36,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-20 00:53:36,339 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-20 00:53:36,340 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-20 00:53:36,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-20 00:53:36,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-20 00:53:36,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-20 00:53:36,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-20 00:53:36,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-20 00:53:36,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-20 00:53:36,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-20 00:53:36,356 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-20 00:53:36,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-20 00:53:36,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-20 00:53:36,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-20 00:53:36,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-20 00:53:36,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-20 00:53:36,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-20 00:53:36,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-20 00:53:36,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-20 00:53:36,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-20 00:53:36,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-20 00:53:36,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-20 00:53:36,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-20 00:53:36,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-20 00:53:36,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-20 00:53:36,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-20 00:53:36,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-20 00:53:36,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-20 00:53:36,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-20 00:53:36,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-20 00:53:36,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-20 00:53:36,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-20 00:53:36,376 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-20 00:53:36,418 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-20 00:53:36,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-20 00:53:36,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-20 00:53:36,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-20 00:53:36,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-20 00:53:36,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-20 00:53:36,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-20 00:53:36,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-20 00:53:36,421 INFO L138 SettingsManager]: * Use SBE=true [2022-07-20 00:53:36,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-20 00:53:36,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-20 00:53:36,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-20 00:53:36,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-20 00:53:36,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-20 00:53:36,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-20 00:53:36,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-20 00:53:36,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-20 00:53:36,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-20 00:53:36,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-20 00:53:36,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-20 00:53:36,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-20 00:53:36,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-20 00:53:36,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-20 00:53:36,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:53:36,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-20 00:53:36,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-20 00:53:36,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-20 00:53:36,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-20 00:53:36,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-20 00:53:36,425 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-20 00:53:36,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-20 00:53:36,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-20 00:53:36,426 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-20 00:53:36,426 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-20 00:53:36,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-20 00:53:36,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-20 00:53:36,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-20 00:53:36,748 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-20 00:53:36,749 INFO L275 PluginConnector]: CDTParser initialized [2022-07-20 00:53:36,750 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-20 00:53:36,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa74cf38/19503de1203a446898b66b98a0fb9f90/FLAGe087b1a10 [2022-07-20 00:53:37,606 INFO L306 CDTParser]: Found 1 translation units. [2022-07-20 00:53:37,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-20 00:53:37,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa74cf38/19503de1203a446898b66b98a0fb9f90/FLAGe087b1a10 [2022-07-20 00:53:37,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aa74cf38/19503de1203a446898b66b98a0fb9f90 [2022-07-20 00:53:37,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-20 00:53:37,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-20 00:53:37,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-20 00:53:37,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-20 00:53:37,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-20 00:53:37,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:53:37" (1/1) ... [2022-07-20 00:53:37,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f389395 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:37, skipping insertion in model container [2022-07-20 00:53:37,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 12:53:37" (1/1) ... [2022-07-20 00:53:37,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-20 00:53:37,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:53:39,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-20 00:53:39,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:53:39,507 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-20 00:53:39,561 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-20 00:53:39,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-20 00:53:39,807 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:53:39,883 INFO L203 MainTranslator]: Completed pre-run [2022-07-20 00:53:40,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-20 00:53:40,188 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-20 00:53:40,287 INFO L208 MainTranslator]: Completed translation [2022-07-20 00:53:40,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40 WrapperNode [2022-07-20 00:53:40,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-20 00:53:40,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-20 00:53:40,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-20 00:53:40,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-20 00:53:40,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,482 INFO L137 Inliner]: procedures = 232, calls = 1688, calls flagged for inlining = 75, calls inlined = 52, statements flattened = 3434 [2022-07-20 00:53:40,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-20 00:53:40,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-20 00:53:40,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-20 00:53:40,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-20 00:53:40,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-20 00:53:40,708 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-20 00:53:40,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-20 00:53:40,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-20 00:53:40,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (1/1) ... [2022-07-20 00:53:40,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-20 00:53:40,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-20 00:53:40,735 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) [2022-07-20 00:53:40,760 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 [2022-07-20 00:53:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-20 00:53:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-20 00:53:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-20 00:53:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-20 00:53:40,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-20 00:53:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-20 00:53:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-20 00:53:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-20 00:53:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-20 00:53:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-20 00:53:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-20 00:53:40,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-20 00:53:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-20 00:53:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-20 00:53:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-07-20 00:53:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-07-20 00:53:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-07-20 00:53:40,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-07-20 00:53:40,778 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_common [2022-07-20 00:53:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_common [2022-07-20 00:53:40,779 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-20 00:53:40,779 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-20 00:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-20 00:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-20 00:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-20 00:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-20 00:53:40,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-20 00:53:40,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-20 00:53:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-20 00:53:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-20 00:53:40,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-20 00:53:40,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-20 00:53:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-20 00:53:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-20 00:53:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-20 00:53:40,782 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-20 00:53:40,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-20 00:53:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-20 00:53:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-20 00:53:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-20 00:53:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-20 00:53:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-20 00:53:40,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-20 00:53:40,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-20 00:53:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-20 00:53:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-20 00:53:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-20 00:53:40,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-20 00:53:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-20 00:53:40,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-20 00:53:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-20 00:53:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-20 00:53:40,786 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-20 00:53:40,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-20 00:53:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-20 00:53:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-20 00:53:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-20 00:53:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-20 00:53:40,787 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-20 00:53:40,787 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-20 00:53:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-20 00:53:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-20 00:53:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-20 00:53:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-20 00:53:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-20 00:53:40,788 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-20 00:53:40,788 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-20 00:53:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-20 00:53:40,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-20 00:53:40,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-20 00:53:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-20 00:53:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-20 00:53:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-20 00:53:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-20 00:53:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 00:53:40,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-20 00:53:40,790 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-20 00:53:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-20 00:53:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-20 00:53:40,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-20 00:53:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-20 00:53:40,791 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-20 00:53:40,792 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-20 00:53:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-20 00:53:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-20 00:53:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-20 00:53:40,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-20 00:53:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-20 00:53:40,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-20 00:53:40,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-20 00:53:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-20 00:53:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-20 00:53:40,794 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-20 00:53:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-20 00:53:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-20 00:53:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-20 00:53:40,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-20 00:53:40,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-20 00:53:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-20 00:53:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-20 00:53:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-20 00:53:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-20 00:53:40,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-20 00:53:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-20 00:53:40,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-20 00:53:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-20 00:53:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-20 00:53:40,797 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-20 00:53:40,797 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-20 00:53:40,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-20 00:53:40,798 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-20 00:53:40,798 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-20 00:53:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-20 00:53:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-20 00:53:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-20 00:53:40,799 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-20 00:53:40,799 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-20 00:53:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-20 00:53:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-20 00:53:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-20 00:53:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-20 00:53:40,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-20 00:53:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-20 00:53:40,800 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-20 00:53:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-20 00:53:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-20 00:53:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-20 00:53:40,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-20 00:53:40,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-20 00:53:41,305 INFO L234 CfgBuilder]: Building ICFG [2022-07-20 00:53:41,307 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-20 00:53:41,812 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-20 00:54:44,252 INFO L275 CfgBuilder]: Performing block encoding [2022-07-20 00:54:44,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-20 00:54:44,269 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-20 00:54:44,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:54:44 BoogieIcfgContainer [2022-07-20 00:54:44,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-20 00:54:44,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-20 00:54:44,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-20 00:54:44,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-20 00:54:44,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 12:53:37" (1/3) ... [2022-07-20 00:54:44,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b095ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:54:44, skipping insertion in model container [2022-07-20 00:54:44,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 12:53:40" (2/3) ... [2022-07-20 00:54:44,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b095ee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 12:54:44, skipping insertion in model container [2022-07-20 00:54:44,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 12:54:44" (3/3) ... [2022-07-20 00:54:44,279 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-20 00:54:44,290 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-20 00:54:44,290 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-20 00:54:44,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-20 00:54:44,359 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45fa9e39, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c7c7b46 [2022-07-20 00:54:44,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-20 00:54:44,368 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2022-07-20 00:54:44,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 00:54:44,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:54:44,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:54:44,376 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:54:44,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:54:44,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1349896211, now seen corresponding path program 1 times [2022-07-20 00:54:44,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:54:44,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61029247] [2022-07-20 00:54:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:54:44,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:54:44,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:54:44,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:54:44,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-20 00:54:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:54:46,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-20 00:54:46,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:54:46,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:54:46,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:54:46,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:54:46,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61029247] [2022-07-20 00:54:46,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61029247] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:54:46,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:54:46,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:54:46,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667803996] [2022-07-20 00:54:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:54:46,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-20 00:54:46,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:54:46,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-20 00:54:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:54:46,257 INFO L87 Difference]: Start difference. First operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:54:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:54:46,374 INFO L93 Difference]: Finished difference Result 1453 states and 2054 transitions. [2022-07-20 00:54:46,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-20 00:54:46,376 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-20 00:54:46,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:54:46,394 INFO L225 Difference]: With dead ends: 1453 [2022-07-20 00:54:46,394 INFO L226 Difference]: Without dead ends: 718 [2022-07-20 00:54:46,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-20 00:54:46,404 INFO L413 NwaCegarLoop]: 1007 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, 1007 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 [2022-07-20 00:54:46,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:54:46,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-07-20 00:54:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-07-20 00:54:46,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 511 states have (on average 1.3346379647749511) internal successors, (682), 529 states have internal predecessors, (682), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-20 00:54:46,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 994 transitions. [2022-07-20 00:54:46,515 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 994 transitions. Word has length 39 [2022-07-20 00:54:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:54:46,516 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 994 transitions. [2022-07-20 00:54:46,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:54:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 994 transitions. [2022-07-20 00:54:46,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-20 00:54:46,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:54:46,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:54:46,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-20 00:54:46,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:54:46,738 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:54:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:54:46,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1859369301, now seen corresponding path program 1 times [2022-07-20 00:54:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:54:46,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243278379] [2022-07-20 00:54:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:54:46,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:54:46,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:54:46,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:54:46,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-20 00:54:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:54:48,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-20 00:54:48,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:54:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:54:48,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:54:48,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:54:48,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243278379] [2022-07-20 00:54:48,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243278379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:54:48,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:54:48,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-20 00:54:48,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649780070] [2022-07-20 00:54:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:54:48,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-20 00:54:48,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:54:48,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-20 00:54:48,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-20 00:54:48,918 INFO L87 Difference]: Start difference. First operand 718 states and 994 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:54:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:54:49,244 INFO L93 Difference]: Finished difference Result 1433 states and 1985 transitions. [2022-07-20 00:54:49,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-20 00:54:49,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-20 00:54:49,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:54:49,249 INFO L225 Difference]: With dead ends: 1433 [2022-07-20 00:54:49,249 INFO L226 Difference]: Without dead ends: 719 [2022-07-20 00:54:49,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:54:49,253 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 176 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-20 00:54:49,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 3762 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-20 00:54:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-20 00:54:49,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-07-20 00:54:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 512 states have (on average 1.333984375) internal successors, (683), 530 states have internal predecessors, (683), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-20 00:54:49,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 995 transitions. [2022-07-20 00:54:49,288 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 995 transitions. Word has length 39 [2022-07-20 00:54:49,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:54:49,290 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 995 transitions. [2022-07-20 00:54:49,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-20 00:54:49,290 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 995 transitions. [2022-07-20 00:54:49,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-20 00:54:49,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:54:49,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:54:49,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-20 00:54:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:54:49,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:54:49,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:54:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash 290922194, now seen corresponding path program 1 times [2022-07-20 00:54:49,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:54:49,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642571058] [2022-07-20 00:54:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:54:49,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:54:49,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:54:49,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:54:49,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-20 00:54:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:54:51,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-20 00:54:51,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:54:51,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:54:51,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:54:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:54:52,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:54:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642571058] [2022-07-20 00:54:52,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642571058] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:54:52,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:54:52,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-20 00:54:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182473965] [2022-07-20 00:54:52,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:54:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-20 00:54:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:54:52,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-20 00:54:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-20 00:54:52,870 INFO L87 Difference]: Start difference. First operand 719 states and 995 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-20 00:54:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:54:53,359 INFO L93 Difference]: Finished difference Result 1435 states and 1987 transitions. [2022-07-20 00:54:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:54:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-07-20 00:54:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:54:53,364 INFO L225 Difference]: With dead ends: 1435 [2022-07-20 00:54:53,364 INFO L226 Difference]: Without dead ends: 720 [2022-07-20 00:54:53,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-20 00:54:53,368 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 177 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5542 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:54:53,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5542 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:54:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-20 00:54:53,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2022-07-20 00:54:53,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 531 states have internal predecessors, (684), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-20 00:54:53,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 996 transitions. [2022-07-20 00:54:53,407 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 996 transitions. Word has length 40 [2022-07-20 00:54:53,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:54:53,408 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 996 transitions. [2022-07-20 00:54:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-20 00:54:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 996 transitions. [2022-07-20 00:54:53,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-20 00:54:53,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:54:53,414 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:54:53,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-20 00:54:53,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:54:53,640 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:54:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:54:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1769518197, now seen corresponding path program 2 times [2022-07-20 00:54:53,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:54:53,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181992616] [2022-07-20 00:54:53,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:54:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:54:53,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:54:53,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:54:53,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-20 00:54:55,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:54:55,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:54:55,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:54:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:54:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-20 00:54:55,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:54:55,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:54:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181992616] [2022-07-20 00:54:55,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181992616] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:54:55,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:54:55,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:54:55,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905668736] [2022-07-20 00:54:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:54:55,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:54:55,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:54:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:54:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:54:55,586 INFO L87 Difference]: Start difference. First operand 720 states and 996 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 00:54:57,782 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:54:58,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:54:58,243 INFO L93 Difference]: Finished difference Result 2125 states and 2944 transitions. [2022-07-20 00:54:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:54:58,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-07-20 00:54:58,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:54:58,255 INFO L225 Difference]: With dead ends: 2125 [2022-07-20 00:54:58,255 INFO L226 Difference]: Without dead ends: 1413 [2022-07-20 00:54:58,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:54:58,260 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 959 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:54:58,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-20 00:54:58,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-20 00:54:58,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1409. [2022-07-20 00:54:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1005 states have (on average 1.3333333333333333) internal successors, (1340), 1036 states have internal predecessors, (1340), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:54:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1952 transitions. [2022-07-20 00:54:58,322 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1952 transitions. Word has length 41 [2022-07-20 00:54:58,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:54:58,323 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1952 transitions. [2022-07-20 00:54:58,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-20 00:54:58,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1952 transitions. [2022-07-20 00:54:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-20 00:54:58,328 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:54:58,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:54:58,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-20 00:54:58,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:54:58,548 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:54:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:54:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1815198130, now seen corresponding path program 1 times [2022-07-20 00:54:58,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:54:58,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [122781621] [2022-07-20 00:54:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:54:58,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:54:58,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:54:58,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:54:58,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-20 00:55:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:00,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 00:55:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:01,375 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:55:01,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:55:03,895 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:55:03,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:03,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [122781621] [2022-07-20 00:55:03,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [122781621] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:55:03,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:55:03,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-20 00:55:03,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987720345] [2022-07-20 00:55:03,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:55:03,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-20 00:55:03,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:03,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-20 00:55:03,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-20 00:55:03,898 INFO L87 Difference]: Start difference. First operand 1409 states and 1952 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-20 00:55:04,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:04,856 INFO L93 Difference]: Finished difference Result 2808 states and 3895 transitions. [2022-07-20 00:55:04,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-20 00:55:04,857 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-07-20 00:55:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:04,864 INFO L225 Difference]: With dead ends: 2808 [2022-07-20 00:55:04,864 INFO L226 Difference]: Without dead ends: 1411 [2022-07-20 00:55:04,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-20 00:55:04,870 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 354 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:04,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 5741 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-20 00:55:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-20 00:55:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-20 00:55:04,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3326713008937439) internal successors, (1342), 1038 states have internal predecessors, (1342), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1954 transitions. [2022-07-20 00:55:04,925 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1954 transitions. Word has length 61 [2022-07-20 00:55:04,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:04,925 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1954 transitions. [2022-07-20 00:55:04,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-20 00:55:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1954 transitions. [2022-07-20 00:55:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-20 00:55:04,928 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:04,928 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:04,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:05,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:05,144 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:05,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:05,144 INFO L85 PathProgramCache]: Analyzing trace with hash 934865561, now seen corresponding path program 2 times [2022-07-20 00:55:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:05,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762756886] [2022-07-20 00:55:05,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:55:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:05,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:05,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:05,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-20 00:55:06,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:55:06,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:55:07,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:07,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-20 00:55:07,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:07,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:07,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762756886] [2022-07-20 00:55:07,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762756886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:07,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:07,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:55:07,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517377467] [2022-07-20 00:55:07,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:07,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:07,138 INFO L87 Difference]: Start difference. First operand 1411 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:07,462 INFO L93 Difference]: Finished difference Result 1433 states and 1980 transitions. [2022-07-20 00:55:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2022-07-20 00:55:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:07,470 INFO L225 Difference]: With dead ends: 1433 [2022-07-20 00:55:07,470 INFO L226 Difference]: Without dead ends: 1422 [2022-07-20 00:55:07,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:07,473 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 989 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:07,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1019 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-20 00:55:07,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-07-20 00:55:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1411. [2022-07-20 00:55:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3316782522343595) internal successors, (1341), 1038 states have internal predecessors, (1341), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1953 transitions. [2022-07-20 00:55:07,530 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1953 transitions. Word has length 62 [2022-07-20 00:55:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:07,530 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1953 transitions. [2022-07-20 00:55:07,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1953 transitions. [2022-07-20 00:55:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-20 00:55:07,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:07,533 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:07,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:07,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:07,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:07,757 INFO L85 PathProgramCache]: Analyzing trace with hash 992123863, now seen corresponding path program 1 times [2022-07-20 00:55:07,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:07,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790974901] [2022-07-20 00:55:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:07,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:07,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:07,761 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:07,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-20 00:55:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:09,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-20 00:55:09,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-20 00:55:10,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:55:14,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-20 00:55:14,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:14,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790974901] [2022-07-20 00:55:14,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790974901] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:55:14,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:55:14,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-20 00:55:14,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533104610] [2022-07-20 00:55:14,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:55:14,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-20 00:55:14,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:14,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-20 00:55:14,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-20 00:55:14,426 INFO L87 Difference]: Start difference. First operand 1411 states and 1953 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-20 00:55:15,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:15,821 INFO L93 Difference]: Finished difference Result 2812 states and 3897 transitions. [2022-07-20 00:55:15,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-20 00:55:15,822 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2022-07-20 00:55:15,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:15,832 INFO L225 Difference]: With dead ends: 2812 [2022-07-20 00:55:15,833 INFO L226 Difference]: Without dead ends: 1413 [2022-07-20 00:55:15,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:55:15,840 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 181 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:15,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 6532 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-20 00:55:15,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-20 00:55:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2022-07-20 00:55:15,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1009 states have (on average 1.3310208126858276) internal successors, (1343), 1040 states have internal predecessors, (1343), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1955 transitions. [2022-07-20 00:55:15,896 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1955 transitions. Word has length 62 [2022-07-20 00:55:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:15,898 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1955 transitions. [2022-07-20 00:55:15,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-20 00:55:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1955 transitions. [2022-07-20 00:55:15,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-20 00:55:15,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:15,900 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:15,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:16,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:16,111 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:16,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:16,112 INFO L85 PathProgramCache]: Analyzing trace with hash -528382000, now seen corresponding path program 2 times [2022-07-20 00:55:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:16,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797441020] [2022-07-20 00:55:16,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:55:16,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:16,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:16,116 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:16,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-20 00:55:17,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:55:17,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:55:18,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:18,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-20 00:55:20,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:20,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:20,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797441020] [2022-07-20 00:55:20,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797441020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:20,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:20,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:55:20,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695745808] [2022-07-20 00:55:20,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:20,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:20,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:20,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:20,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:20,181 INFO L87 Difference]: Start difference. First operand 1413 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:20,234 INFO L93 Difference]: Finished difference Result 1415 states and 1956 transitions. [2022-07-20 00:55:20,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:20,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-20 00:55:20,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:20,243 INFO L225 Difference]: With dead ends: 1415 [2022-07-20 00:55:20,244 INFO L226 Difference]: Without dead ends: 1412 [2022-07-20 00:55:20,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:20,245 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:20,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:55:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-07-20 00:55:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2022-07-20 00:55:20,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1009 states have (on average 1.330029732408325) internal successors, (1342), 1039 states have internal predecessors, (1342), 308 states have call successors, (308), 95 states have call predecessors, (308), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1953 transitions. [2022-07-20 00:55:20,301 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1953 transitions. Word has length 63 [2022-07-20 00:55:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:20,302 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1953 transitions. [2022-07-20 00:55:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1953 transitions. [2022-07-20 00:55:20,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-20 00:55:20,304 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:20,304 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:20,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:20,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:20,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:20,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:20,520 INFO L85 PathProgramCache]: Analyzing trace with hash 799813546, now seen corresponding path program 1 times [2022-07-20 00:55:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:20,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718428708] [2022-07-20 00:55:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:20,524 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:20,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-20 00:55:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:22,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:22,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:24,892 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-20 00:55:24,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:24,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:24,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718428708] [2022-07-20 00:55:24,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718428708] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:24,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:24,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:55:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52805975] [2022-07-20 00:55:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:24,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:24,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:24,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:24,894 INFO L87 Difference]: Start difference. First operand 1412 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:24,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:24,959 INFO L93 Difference]: Finished difference Result 1414 states and 1954 transitions. [2022-07-20 00:55:24,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:24,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-07-20 00:55:24,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:24,967 INFO L225 Difference]: With dead ends: 1414 [2022-07-20 00:55:24,968 INFO L226 Difference]: Without dead ends: 1411 [2022-07-20 00:55:24,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:24,969 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:24,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:55:24,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-20 00:55:25,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-20 00:55:25,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1009 states have (on average 1.3290386521308226) internal successors, (1341), 1038 states have internal predecessors, (1341), 307 states have call successors, (307), 95 states have call predecessors, (307), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:25,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1951 transitions. [2022-07-20 00:55:25,024 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1951 transitions. Word has length 64 [2022-07-20 00:55:25,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:25,024 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1951 transitions. [2022-07-20 00:55:25,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:25,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1951 transitions. [2022-07-20 00:55:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-20 00:55:25,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:25,027 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:25,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:25,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:25,248 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:25,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:25,248 INFO L85 PathProgramCache]: Analyzing trace with hash -975792621, now seen corresponding path program 1 times [2022-07-20 00:55:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:25,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473523044] [2022-07-20 00:55:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:25,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:25,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:25,253 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:25,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-20 00:55:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:27,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:27,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:29,716 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-20 00:55:29,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:29,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:29,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473523044] [2022-07-20 00:55:29,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473523044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:29,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:29,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:55:29,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092800325] [2022-07-20 00:55:29,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:29,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:29,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:29,718 INFO L87 Difference]: Start difference. First operand 1411 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:29,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:29,770 INFO L93 Difference]: Finished difference Result 1413 states and 1952 transitions. [2022-07-20 00:55:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:29,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-20 00:55:29,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:29,778 INFO L225 Difference]: With dead ends: 1413 [2022-07-20 00:55:29,779 INFO L226 Difference]: Without dead ends: 1410 [2022-07-20 00:55:29,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:29,780 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:29,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-20 00:55:29,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-07-20 00:55:29,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-07-20 00:55:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1009 states have (on average 1.32804757185332) internal successors, (1340), 1037 states have internal predecessors, (1340), 306 states have call successors, (306), 95 states have call predecessors, (306), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-20 00:55:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1949 transitions. [2022-07-20 00:55:29,834 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1949 transitions. Word has length 65 [2022-07-20 00:55:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:29,835 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1949 transitions. [2022-07-20 00:55:29,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1949 transitions. [2022-07-20 00:55:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-20 00:55:29,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:29,840 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:29,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:30,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:30,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:30,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:30,060 INFO L85 PathProgramCache]: Analyzing trace with hash -185004083, now seen corresponding path program 1 times [2022-07-20 00:55:30,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:30,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832468422] [2022-07-20 00:55:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:30,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:30,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:30,065 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:30,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-20 00:55:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:32,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-20 00:55:34,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:34,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:34,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832468422] [2022-07-20 00:55:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832468422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:34,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:34,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-20 00:55:34,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935145757] [2022-07-20 00:55:34,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:34,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:34,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:34,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:34,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:34,532 INFO L87 Difference]: Start difference. First operand 1410 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:34,740 INFO L93 Difference]: Finished difference Result 4176 states and 5791 transitions. [2022-07-20 00:55:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:34,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-07-20 00:55:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:34,758 INFO L225 Difference]: With dead ends: 4176 [2022-07-20 00:55:34,758 INFO L226 Difference]: Without dead ends: 2776 [2022-07-20 00:55:34,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:34,765 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 931 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:34,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2140 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 00:55:34,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-20 00:55:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2771. [2022-07-20 00:55:34,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 1981 states have (on average 1.331145885916204) internal successors, (2637), 2035 states have internal predecessors, (2637), 605 states have call successors, (605), 187 states have call predecessors, (605), 184 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-20 00:55:34,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3844 transitions. [2022-07-20 00:55:34,921 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3844 transitions. Word has length 66 [2022-07-20 00:55:34,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:34,921 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 3844 transitions. [2022-07-20 00:55:34,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-20 00:55:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3844 transitions. [2022-07-20 00:55:34,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-20 00:55:34,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:34,925 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:35,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:35,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:35,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:35,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:35,134 INFO L85 PathProgramCache]: Analyzing trace with hash -779176628, now seen corresponding path program 1 times [2022-07-20 00:55:35,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:35,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735848856] [2022-07-20 00:55:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:35,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:35,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:35,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:35,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-20 00:55:37,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:37,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 3558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:55:37,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-20 00:55:38,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:38,013 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:38,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735848856] [2022-07-20 00:55:38,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735848856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:38,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:55:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519596894] [2022-07-20 00:55:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:38,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:55:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:55:38,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:38,015 INFO L87 Difference]: Start difference. First operand 2771 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:55:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:38,740 INFO L93 Difference]: Finished difference Result 5599 states and 7766 transitions. [2022-07-20 00:55:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:55:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-07-20 00:55:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:38,757 INFO L225 Difference]: With dead ends: 5599 [2022-07-20 00:55:38,758 INFO L226 Difference]: Without dead ends: 2846 [2022-07-20 00:55:38,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:55:38,768 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 52 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:38,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1948 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-20 00:55:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-20 00:55:38,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2833. [2022-07-20 00:55:38,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2041 states have (on average 1.33219010289074) internal successors, (2719), 2095 states have internal predecessors, (2719), 605 states have call successors, (605), 189 states have call predecessors, (605), 186 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-20 00:55:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3926 transitions. [2022-07-20 00:55:38,911 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3926 transitions. Word has length 112 [2022-07-20 00:55:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:38,911 INFO L495 AbstractCegarLoop]: Abstraction has 2833 states and 3926 transitions. [2022-07-20 00:55:38,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-20 00:55:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3926 transitions. [2022-07-20 00:55:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-20 00:55:38,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:38,916 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:39,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:39,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:39,135 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:39,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2095317379, now seen corresponding path program 1 times [2022-07-20 00:55:39,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:39,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722052863] [2022-07-20 00:55:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:39,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:39,141 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:39,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-20 00:55:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:41,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-20 00:55:42,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:43,265 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-20 00:55:43,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:55:43,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:43,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722052863] [2022-07-20 00:55:43,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722052863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:55:43,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:55:43,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-20 00:55:43,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908304568] [2022-07-20 00:55:43,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:55:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-20 00:55:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-20 00:55:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-20 00:55:43,269 INFO L87 Difference]: Start difference. First operand 2833 states and 3926 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:55:46,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:55:48,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:55:48,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:55:48,588 INFO L93 Difference]: Finished difference Result 5905 states and 8249 transitions. [2022-07-20 00:55:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-20 00:55:48,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-07-20 00:55:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:55:48,606 INFO L225 Difference]: With dead ends: 5905 [2022-07-20 00:55:48,606 INFO L226 Difference]: Without dead ends: 3102 [2022-07-20 00:55:48,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-20 00:55:48,618 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 152 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-20 00:55:48,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 5191 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 5.0s Time] [2022-07-20 00:55:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-07-20 00:55:48,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2853. [2022-07-20 00:55:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2057 states have (on average 1.329606222654351) internal successors, (2735), 2111 states have internal predecessors, (2735), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-20 00:55:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3970 transitions. [2022-07-20 00:55:48,798 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3970 transitions. Word has length 141 [2022-07-20 00:55:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:55:48,798 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 3970 transitions. [2022-07-20 00:55:48,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-20 00:55:48,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3970 transitions. [2022-07-20 00:55:48,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-20 00:55:48,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:55:48,804 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:55:48,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-20 00:55:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:55:49,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:55:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:55:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1072486492, now seen corresponding path program 1 times [2022-07-20 00:55:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:55:49,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348525863] [2022-07-20 00:55:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:55:49,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:55:49,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:55:49,033 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:55:49,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-20 00:55:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:55:52,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-20 00:55:52,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:55:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-20 00:55:53,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:55:56,859 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 00:55:56,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:55:56,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348525863] [2022-07-20 00:55:56,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348525863] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:55:56,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:55:56,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-20 00:55:56,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051423519] [2022-07-20 00:55:56,861 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:55:56,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-20 00:55:56,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:55:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-20 00:55:56,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-20 00:55:56,863 INFO L87 Difference]: Start difference. First operand 2853 states and 3970 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 00:56:01,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:56:01,790 INFO L93 Difference]: Finished difference Result 5726 states and 7989 transitions. [2022-07-20 00:56:01,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-20 00:56:01,791 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-07-20 00:56:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:56:01,808 INFO L225 Difference]: With dead ends: 5726 [2022-07-20 00:56:01,808 INFO L226 Difference]: Without dead ends: 2887 [2022-07-20 00:56:01,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-20 00:56:01,821 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 26 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5903 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-20 00:56:01,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5903 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-20 00:56:01,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-20 00:56:01,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2877. [2022-07-20 00:56:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2081 states have (on average 1.3258049014896685) internal successors, (2759), 2135 states have internal predecessors, (2759), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-20 00:56:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3994 transitions. [2022-07-20 00:56:01,942 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3994 transitions. Word has length 147 [2022-07-20 00:56:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:56:01,942 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 3994 transitions. [2022-07-20 00:56:01,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-20 00:56:01,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3994 transitions. [2022-07-20 00:56:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-20 00:56:01,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:56:01,949 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:56:02,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-20 00:56:02,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:56:02,163 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:56:02,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:56:02,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1148257020, now seen corresponding path program 2 times [2022-07-20 00:56:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:56:02,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278625884] [2022-07-20 00:56:02,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:56:02,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:56:02,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:56:02,169 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:56:02,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-20 00:56:04,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:56:04,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:56:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:56:04,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:56:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-20 00:56:04,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:56:04,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:56:04,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278625884] [2022-07-20 00:56:04,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278625884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:56:04,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:56:04,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:56:04,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062757165] [2022-07-20 00:56:04,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:56:04,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:56:04,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:56:04,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:56:04,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:56:04,658 INFO L87 Difference]: Start difference. First operand 2877 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 00:56:04,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:56:04,953 INFO L93 Difference]: Finished difference Result 6273 states and 8767 transitions. [2022-07-20 00:56:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:56:04,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 153 [2022-07-20 00:56:04,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:56:04,984 INFO L225 Difference]: With dead ends: 6273 [2022-07-20 00:56:04,985 INFO L226 Difference]: Without dead ends: 3426 [2022-07-20 00:56:04,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:56:04,997 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 147 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-20 00:56:04,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-20 00:56:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-07-20 00:56:05,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2889. [2022-07-20 00:56:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2093 states have (on average 1.3239369326325847) internal successors, (2771), 2147 states have internal predecessors, (2771), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-20 00:56:05,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4006 transitions. [2022-07-20 00:56:05,152 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4006 transitions. Word has length 153 [2022-07-20 00:56:05,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:56:05,153 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4006 transitions. [2022-07-20 00:56:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-20 00:56:05,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4006 transitions. [2022-07-20 00:56:05,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-20 00:56:05,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:56:05,159 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:56:05,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-20 00:56:05,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:56:05,380 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:56:05,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:56:05,380 INFO L85 PathProgramCache]: Analyzing trace with hash -604240790, now seen corresponding path program 1 times [2022-07-20 00:56:05,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:56:05,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583334235] [2022-07-20 00:56:05,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:56:05,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:56:05,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:56:05,386 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:56:05,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-20 00:56:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:56:09,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 3771 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-20 00:56:09,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:56:12,823 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-20 00:56:12,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:56:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-20 00:56:22,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:56:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583334235] [2022-07-20 00:56:22,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583334235] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:56:22,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:56:22,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-20 00:56:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256733511] [2022-07-20 00:56:22,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:56:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-20 00:56:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:56:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-20 00:56:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-20 00:56:22,071 INFO L87 Difference]: Start difference. First operand 2889 states and 4006 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-20 00:56:45,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:56:45,184 INFO L93 Difference]: Finished difference Result 5846 states and 8145 transitions. [2022-07-20 00:56:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-20 00:56:45,185 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2022-07-20 00:56:45,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:56:45,198 INFO L225 Difference]: With dead ends: 5846 [2022-07-20 00:56:45,199 INFO L226 Difference]: Without dead ends: 2971 [2022-07-20 00:56:45,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=635, Invalid=1171, Unknown=0, NotChecked=0, Total=1806 [2022-07-20 00:56:45,209 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 158 mSDsluCounter, 14805 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-20 00:56:45,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 15796 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-20 00:56:45,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-07-20 00:56:45,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2937. [2022-07-20 00:56:45,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2141 states have (on average 1.3166744511910322) internal successors, (2819), 2195 states have internal predecessors, (2819), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-20 00:56:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 4054 transitions. [2022-07-20 00:56:45,330 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 4054 transitions. Word has length 169 [2022-07-20 00:56:45,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:56:45,331 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 4054 transitions. [2022-07-20 00:56:45,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-20 00:56:45,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 4054 transitions. [2022-07-20 00:56:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-20 00:56:45,336 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:56:45,337 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:56:45,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-20 00:56:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:56:45,564 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:56:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:56:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 731148714, now seen corresponding path program 2 times [2022-07-20 00:56:45,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:56:45,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578913424] [2022-07-20 00:56:45,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-20 00:56:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:56:45,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:56:45,574 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:56:45,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-20 00:56:47,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-20 00:56:47,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-20 00:56:48,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-20 00:56:48,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:56:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2022-07-20 00:56:48,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-20 00:56:48,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:56:48,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578913424] [2022-07-20 00:56:48,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578913424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-20 00:56:48,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-20 00:56:48,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-20 00:56:48,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944093537] [2022-07-20 00:56:48,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-20 00:56:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-20 00:56:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:56:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-20 00:56:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:56:48,496 INFO L87 Difference]: Start difference. First operand 2937 states and 4054 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:56:50,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-20 00:56:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-20 00:56:50,971 INFO L93 Difference]: Finished difference Result 5846 states and 8078 transitions. [2022-07-20 00:56:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-20 00:56:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 181 [2022-07-20 00:56:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-20 00:56:50,987 INFO L225 Difference]: With dead ends: 5846 [2022-07-20 00:56:50,988 INFO L226 Difference]: Without dead ends: 2939 [2022-07-20 00:56:50,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-20 00:56:50,999 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 960 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-20 00:56:50,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2867 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-20 00:56:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-20 00:56:51,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2934. [2022-07-20 00:56:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2139 states have (on average 1.3151005142589995) internal successors, (2813), 2193 states have internal predecessors, (2813), 604 states have call successors, (604), 188 states have call predecessors, (604), 190 states have return successors, (628), 604 states have call predecessors, (628), 600 states have call successors, (628) [2022-07-20 00:56:51,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4045 transitions. [2022-07-20 00:56:51,132 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4045 transitions. Word has length 181 [2022-07-20 00:56:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-20 00:56:51,133 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4045 transitions. [2022-07-20 00:56:51,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-20 00:56:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4045 transitions. [2022-07-20 00:56:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-20 00:56:51,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-20 00:56:51,139 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-20 00:56:51,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-20 00:56:51,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-20 00:56:51,356 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-20 00:56:51,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-20 00:56:51,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1008632914, now seen corresponding path program 1 times [2022-07-20 00:56:51,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-20 00:56:51,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721133588] [2022-07-20 00:56:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-20 00:56:51,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-20 00:56:51,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-20 00:56:51,362 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-20 00:56:51,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-20 00:56:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-20 00:56:55,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 3911 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-20 00:56:55,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-20 00:57:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 127 proven. 253 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-20 00:57:09,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-20 00:57:41,864 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 117 proven. 253 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-20 00:57:41,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-20 00:57:41,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721133588] [2022-07-20 00:57:41,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721133588] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-20 00:57:41,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-20 00:57:41,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-20 00:57:41,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000770447] [2022-07-20 00:57:41,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-20 00:57:41,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-20 00:57:41,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-20 00:57:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-20 00:57:41,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-20 00:57:41,940 INFO L87 Difference]: Start difference. First operand 2934 states and 4045 transitions. Second operand has 50 states, 50 states have (on average 3.26) internal successors, (163), 50 states have internal predecessors, (163), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)