./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:29:16,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:29:16,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:29:16,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:29:16,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:29:16,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:29:16,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:29:16,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:29:16,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:29:16,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:29:16,435 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:29:16,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:29:16,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:29:16,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:29:16,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:29:16,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:29:16,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:29:16,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:29:16,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:29:16,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:29:16,449 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:29:16,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:29:16,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:29:16,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:29:16,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:29:16,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:29:16,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:29:16,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:29:16,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:29:16,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:29:16,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:29:16,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:29:16,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:29:16,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:29:16,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:29:16,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:29:16,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:29:16,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:29:16,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:29:16,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:29:16,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:29:16,466 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:29:16,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:29:16,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:29:16,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:29:16,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:29:16,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:29:16,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:29:16,490 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:29:16,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:29:16,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:29:16,491 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:29:16,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:29:16,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:29:16,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:29:16,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:29:16,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:29:16,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:29:16,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:29:16,493 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:29:16,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:29:16,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:29:16,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:29:16,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:29:16,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:29:16,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:29:16,495 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:29:16,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:29:16,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-19 23:29:16,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:29:16,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:29:16,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:29:16,725 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:29:16,725 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:29:16,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-19 23:29:16,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2833f6ed8/aad176bd7fd64b8886b467dcfa0bc35d/FLAGb7d77f7fc [2022-07-19 23:29:17,459 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:29:17,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-19 23:29:17,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2833f6ed8/aad176bd7fd64b8886b467dcfa0bc35d/FLAGb7d77f7fc [2022-07-19 23:29:17,809 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2833f6ed8/aad176bd7fd64b8886b467dcfa0bc35d [2022-07-19 23:29:17,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:29:17,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:29:17,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:29:17,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:29:17,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:29:17,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:17" (1/1) ... [2022-07-19 23:29:17,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ed3fa20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:17, skipping insertion in model container [2022-07-19 23:29:17,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:17" (1/1) ... [2022-07-19 23:29:17,821 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:29:17,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:29:18,472 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-19 23:29:18,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:18,985 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:29:19,123 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-19 23:29:19,172 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) [2022-07-19 23:29:19,182 INFO L158 Benchmark]: Toolchain (without parser) took 1368.60ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 62.1MB in the end (delta: 39.0MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2022-07-19 23:29:19,183 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 23:29:19,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1367.23ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 62.1MB in the end (delta: 39.0MB). Peak memory consumption was 86.2MB. Max. memory is 16.1GB. [2022-07-19 23:29:19,185 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory is still 77.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1367.23ms. Allocated memory is still 127.9MB. Free memory was 101.1MB in the beginning and 62.1MB in the end (delta: 39.0MB). Peak memory consumption was 86.2MB. 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:29:20,759 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:29:20,760 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:29:20,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:29:20,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:29:20,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:29:20,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:29:20,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:29:20,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:29:20,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:29:20,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:29:20,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:29:20,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:29:20,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:29:20,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:29:20,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:29:20,817 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:29:20,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:29:20,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:29:20,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:29:20,825 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:29:20,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:29:20,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:29:20,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:29:20,827 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:29:20,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:29:20,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:29:20,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:29:20,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:29:20,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:29:20,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:29:20,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:29:20,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:29:20,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:29:20,832 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:29:20,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:29:20,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:29:20,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:29:20,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:29:20,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:29:20,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:29:20,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:29:20,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 23:29:20,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:29:20,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:29:20,865 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:29:20,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:29:20,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:29:20,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:29:20,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:29:20,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:29:20,866 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:29:20,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:29:20,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 23:29:20,868 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 23:29:20,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:29:20,869 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:29:20,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:29:20,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:29:20,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:29:20,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:29:20,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 23:29:20,870 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:29:20,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:29:20,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:29:20,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 23:29:20,871 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-19 23:29:21,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:29:21,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:29:21,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:29:21,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:29:21,127 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:29:21,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-19 23:29:21,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28dac340/31ae106d5c70402994c856ab77dac98b/FLAGed8c74248 [2022-07-19 23:29:21,766 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:29:21,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-19 23:29:21,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28dac340/31ae106d5c70402994c856ab77dac98b/FLAGed8c74248 [2022-07-19 23:29:21,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28dac340/31ae106d5c70402994c856ab77dac98b [2022-07-19 23:29:21,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:29:21,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:29:21,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:29:21,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:29:21,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:29:21,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:21" (1/1) ... [2022-07-19 23:29:21,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@375ff012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:21, skipping insertion in model container [2022-07-19 23:29:21,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:29:21" (1/1) ... [2022-07-19 23:29:21,928 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:29:22,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:29:22,718 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-19 23:29:23,091 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:23,136 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-19 23:29:23,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:29:23,260 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-19 23:29:23,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:23,388 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:29:23,547 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-19 23:29:23,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:29:23,743 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:29:23,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23 WrapperNode [2022-07-19 23:29:23,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:29:23,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:29:23,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:29:23,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:29:23,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:23,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:23,984 INFO L137 Inliner]: procedures = 198, calls = 1615, calls flagged for inlining = 84, calls inlined = 65, statements flattened = 2837 [2022-07-19 23:29:23,984 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:29:23,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:29:23,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:29:23,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:29:23,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:23,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:29:24,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:29:24,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:29:24,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:29:24,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (1/1) ... [2022-07-19 23:29:24,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:29:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:29:24,220 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) [2022-07-19 23:29:24,223 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 [2022-07-19 23:29:24,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:29:24,248 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-19 23:29:24,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-19 23:29:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-19 23:29:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-19 23:29:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-19 23:29:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-19 23:29:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-19 23:29:24,249 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-19 23:29:24,249 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:29:24,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:29:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-19 23:29:24,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-19 23:29:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2022-07-19 23:29:24,250 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2022-07-19 23:29:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2022-07-19 23:29:24,250 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2022-07-19 23:29:24,250 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:29:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:29:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 23:29:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 23:29:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 23:29:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 23:29:24,251 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-19 23:29:24,251 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-19 23:29:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-19 23:29:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-19 23:29:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-19 23:29:24,252 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-19 23:29:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:29:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-19 23:29:24,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:29:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-19 23:29:24,253 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-19 23:29:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-19 23:29:24,253 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-19 23:29:24,253 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2022-07-19 23:29:24,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-19 23:29:24,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 23:29:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-19 23:29:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-19 23:29:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-19 23:29:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-19 23:29:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 23:29:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 23:29:24,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-19 23:29:24,255 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-19 23:29:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-19 23:29:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-19 23:29:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-19 23:29:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-19 23:29:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-19 23:29:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-19 23:29:24,256 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-19 23:29:24,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-19 23:29:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-19 23:29:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-19 23:29:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2022-07-19 23:29:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2022-07-19 23:29:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-07-19 23:29:24,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-07-19 23:29:24,257 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-19 23:29:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-19 23:29:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-19 23:29:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-19 23:29:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-19 23:29:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-19 23:29:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-19 23:29:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-19 23:29:24,258 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:29:24,258 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:29:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-19 23:29:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-19 23:29:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-19 23:29:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-19 23:29:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-19 23:29:24,259 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-19 23:29:24,259 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 23:29:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2022-07-19 23:29:24,260 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2022-07-19 23:29:24,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:29:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-19 23:29:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-19 23:29:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:29:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-19 23:29:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-19 23:29:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-19 23:29:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-19 23:29:24,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-19 23:29:24,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-19 23:29:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-19 23:29:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-19 23:29:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:29:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-19 23:29:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2022-07-19 23:29:24,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2022-07-19 23:29:24,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-19 23:29:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:29:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 23:29:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-19 23:29:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-19 23:29:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-19 23:29:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-19 23:29:24,263 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-19 23:29:24,263 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-19 23:29:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-19 23:29:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-19 23:29:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-19 23:29:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-19 23:29:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-19 23:29:24,264 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-19 23:29:24,264 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-19 23:29:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-19 23:29:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-19 23:29:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-19 23:29:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-19 23:29:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-19 23:29:24,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-19 23:29:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-19 23:29:24,265 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-19 23:29:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-19 23:29:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-19 23:29:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-19 23:29:24,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:29:24,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:29:24,677 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:29:24,680 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:29:25,311 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-19 23:29:30,018 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-19 23:30:03,663 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:30:03,673 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:30:03,673 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 23:30:03,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:30:03 BoogieIcfgContainer [2022-07-19 23:30:03,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:30:03,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:30:03,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:30:03,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:30:03,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:29:21" (1/3) ... [2022-07-19 23:30:03,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48656b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:30:03, skipping insertion in model container [2022-07-19 23:30:03,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:29:23" (2/3) ... [2022-07-19 23:30:03,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48656b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:30:03, skipping insertion in model container [2022-07-19 23:30:03,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:30:03" (3/3) ... [2022-07-19 23:30:03,682 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-19 23:30:03,692 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:30:03,692 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:30:03,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:30:03,755 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@7d4e7709, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6e90217d [2022-07-19 23:30:03,755 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:30:03,762 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) [2022-07-19 23:30:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 23:30:03,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:03,769 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] [2022-07-19 23:30:03,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:03,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:03,772 INFO L85 PathProgramCache]: Analyzing trace with hash -753531349, now seen corresponding path program 1 times [2022-07-19 23:30:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:03,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142155898] [2022-07-19 23:30:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:03,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:03,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:03,787 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) [2022-07-19 23:30:03,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 23:30:04,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:30:04,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:30:05,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:05,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142155898] [2022-07-19 23:30:05,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142155898] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:05,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:05,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:30:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262637506] [2022-07-19 23:30:05,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:05,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:30:05,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:05,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:30:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:30:05,115 INFO L87 Difference]: Start difference. First operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:30:05,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:05,481 INFO L93 Difference]: Finished difference Result 1670 states and 2383 transitions. [2022-07-19 23:30:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:30:05,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-19 23:30:05,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:05,496 INFO L225 Difference]: With dead ends: 1670 [2022-07-19 23:30:05,496 INFO L226 Difference]: Without dead ends: 824 [2022-07-19 23:30:05,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:30:05,509 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 2 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:05,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3478 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:30:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-19 23:30:05,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2022-07-19 23:30:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 605 states have internal predecessors, (782), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-19 23:30:05,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1147 transitions. [2022-07-19 23:30:05,581 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1147 transitions. Word has length 28 [2022-07-19 23:30:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:05,582 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1147 transitions. [2022-07-19 23:30:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:30:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1147 transitions. [2022-07-19 23:30:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 23:30:05,584 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:05,584 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] [2022-07-19 23:30:05,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:05,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:05,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash 65775979, now seen corresponding path program 1 times [2022-07-19 23:30:05,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:05,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859806813] [2022-07-19 23:30:05,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:05,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:05,810 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) [2022-07-19 23:30:05,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 23:30:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:06,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:30:06,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:07,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:30:07,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:30:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:30:08,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859806813] [2022-07-19 23:30:08,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859806813] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:30:08,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:30:08,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-19 23:30:08,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911313557] [2022-07-19 23:30:08,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:30:08,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 23:30:08,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:08,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 23:30:08,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:30:08,193 INFO L87 Difference]: Start difference. First operand 824 states and 1147 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:09,024 INFO L93 Difference]: Finished difference Result 1644 states and 2291 transitions. [2022-07-19 23:30:09,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:30:09,030 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-19 23:30:09,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:09,036 INFO L225 Difference]: With dead ends: 1644 [2022-07-19 23:30:09,037 INFO L226 Difference]: Without dead ends: 827 [2022-07-19 23:30:09,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:30:09,043 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 11 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:09,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4574 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:30:09,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-07-19 23:30:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-07-19 23:30:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 589 states have (on average 1.33276740237691) internal successors, (785), 608 states have internal predecessors, (785), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-19 23:30:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1150 transitions. [2022-07-19 23:30:09,104 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1150 transitions. Word has length 29 [2022-07-19 23:30:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:09,104 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1150 transitions. [2022-07-19 23:30:09,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:09,105 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1150 transitions. [2022-07-19 23:30:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-19 23:30:09,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:09,109 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:09,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:09,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:09,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:09,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:09,328 INFO L85 PathProgramCache]: Analyzing trace with hash 755291691, now seen corresponding path program 2 times [2022-07-19 23:30:09,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:09,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643701716] [2022-07-19 23:30:09,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:30:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:09,333 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) [2022-07-19 23:30:09,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 23:30:10,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 23:30:10,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:30:10,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:10,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-19 23:30:10,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:10,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643701716] [2022-07-19 23:30:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643701716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:10,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:10,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:30:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240797523] [2022-07-19 23:30:10,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:10,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:10,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:10,510 INFO L87 Difference]: Start difference. First operand 827 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:30:12,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:30:13,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:13,017 INFO L93 Difference]: Finished difference Result 2428 states and 3388 transitions. [2022-07-19 23:30:13,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:13,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-19 23:30:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:13,024 INFO L225 Difference]: With dead ends: 2428 [2022-07-19 23:30:13,025 INFO L226 Difference]: Without dead ends: 1616 [2022-07-19 23:30:13,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:13,029 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 1104 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:13,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2459 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 23:30:13,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-19 23:30:13,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2022-07-19 23:30:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3330434782608696) internal successors, (1533), 1184 states have internal predecessors, (1533), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-19 23:30:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2252 transitions. [2022-07-19 23:30:13,077 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2252 transitions. Word has length 32 [2022-07-19 23:30:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:13,077 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2252 transitions. [2022-07-19 23:30:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 23:30:13,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2252 transitions. [2022-07-19 23:30:13,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:30:13,078 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:13,079 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:13,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:13,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:13,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:13,280 INFO L85 PathProgramCache]: Analyzing trace with hash -398706385, now seen corresponding path program 1 times [2022-07-19 23:30:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395897787] [2022-07-19 23:30:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:13,295 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) [2022-07-19 23:30:13,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 23:30:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:14,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:14,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:14,514 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:14,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:14,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:14,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395897787] [2022-07-19 23:30:14,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395897787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:14,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:14,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:30:14,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627544515] [2022-07-19 23:30:14,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:14,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:14,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:14,516 INFO L87 Difference]: Start difference. First operand 1616 states and 2252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:14,850 INFO L93 Difference]: Finished difference Result 1642 states and 2284 transitions. [2022-07-19 23:30:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:14,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-19 23:30:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:14,857 INFO L225 Difference]: With dead ends: 1642 [2022-07-19 23:30:14,858 INFO L226 Difference]: Without dead ends: 1629 [2022-07-19 23:30:14,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:14,860 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1141 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1177 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 [2022-07-19 23:30:14,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:30:14,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-19 23:30:14,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1616. [2022-07-19 23:30:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3321739130434782) internal successors, (1532), 1184 states have internal predecessors, (1532), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-19 23:30:14,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2251 transitions. [2022-07-19 23:30:14,911 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2251 transitions. Word has length 42 [2022-07-19 23:30:14,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:14,912 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2251 transitions. [2022-07-19 23:30:14,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:14,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2251 transitions. [2022-07-19 23:30:14,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-19 23:30:14,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:14,915 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:14,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:15,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:15,135 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:15,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash -341448083, now seen corresponding path program 1 times [2022-07-19 23:30:15,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:15,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869862036] [2022-07-19 23:30:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:15,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:15,140 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) [2022-07-19 23:30:15,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 23:30:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:16,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:30:16,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:19,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:19,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:19,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869862036] [2022-07-19 23:30:19,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869862036] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:19,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:19,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 23:30:19,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199850051] [2022-07-19 23:30:19,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:19,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:19,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:19,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:19,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:19,053 INFO L87 Difference]: Start difference. First operand 1616 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:19,466 INFO L93 Difference]: Finished difference Result 4803 states and 6768 transitions. [2022-07-19 23:30:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:19,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-19 23:30:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:19,485 INFO L225 Difference]: With dead ends: 4803 [2022-07-19 23:30:19,485 INFO L226 Difference]: Without dead ends: 3209 [2022-07-19 23:30:19,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:19,493 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1118 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:19,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 2601 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:30:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-07-19 23:30:19,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3199. [2022-07-19 23:30:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2278 states have (on average 1.3318700614574188) internal successors, (3034), 2342 states have internal predecessors, (3034), 716 states have call successors, (716), 205 states have call predecessors, (716), 204 states have return successors, (745), 699 states have call predecessors, (745), 711 states have call successors, (745) [2022-07-19 23:30:19,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4495 transitions. [2022-07-19 23:30:19,599 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4495 transitions. Word has length 42 [2022-07-19 23:30:19,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:19,599 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 4495 transitions. [2022-07-19 23:30:19,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:19,600 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4495 transitions. [2022-07-19 23:30:19,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-19 23:30:19,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:19,602 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:19,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:19,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:19,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1995368413, now seen corresponding path program 1 times [2022-07-19 23:30:19,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:19,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604855139] [2022-07-19 23:30:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:19,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:19,827 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) [2022-07-19 23:30:19,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 23:30:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:20,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:30:20,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:23,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:23,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:23,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604855139] [2022-07-19 23:30:23,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604855139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:23,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:23,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 23:30:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599611565] [2022-07-19 23:30:23,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:23,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:23,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:23,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:23,710 INFO L87 Difference]: Start difference. First operand 3199 states and 4495 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:24,275 INFO L93 Difference]: Finished difference Result 9544 states and 13706 transitions. [2022-07-19 23:30:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:24,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-07-19 23:30:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:24,304 INFO L225 Difference]: With dead ends: 9544 [2022-07-19 23:30:24,305 INFO L226 Difference]: Without dead ends: 6367 [2022-07-19 23:30:24,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:24,321 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1120 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:24,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2545 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:30:24,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-19 23:30:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6358. [2022-07-19 23:30:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4527 states have (on average 1.3293571901921803) internal successors, (6018), 4651 states have internal predecessors, (6018), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-19 23:30:24,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9033 transitions. [2022-07-19 23:30:24,552 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9033 transitions. Word has length 43 [2022-07-19 23:30:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:24,553 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9033 transitions. [2022-07-19 23:30:24,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9033 transitions. [2022-07-19 23:30:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-19 23:30:24,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:24,555 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:24,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-19 23:30:24,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:24,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1727286224, now seen corresponding path program 1 times [2022-07-19 23:30:24,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:24,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642038984] [2022-07-19 23:30:24,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:24,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:24,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:24,784 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) [2022-07-19 23:30:24,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 23:30:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:25,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:25,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:27,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:27,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:27,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642038984] [2022-07-19 23:30:27,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642038984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:27,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:27,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 23:30:27,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562320524] [2022-07-19 23:30:27,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:27,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:27,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:27,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:27,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:27,291 INFO L87 Difference]: Start difference. First operand 6358 states and 9033 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:27,523 INFO L93 Difference]: Finished difference Result 6365 states and 9039 transitions. [2022-07-19 23:30:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:27,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-07-19 23:30:27,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:27,554 INFO L225 Difference]: With dead ends: 6365 [2022-07-19 23:30:27,554 INFO L226 Difference]: Without dead ends: 6362 [2022-07-19 23:30:27,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:27,559 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1117 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:27,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:30:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2022-07-19 23:30:27,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 6359. [2022-07-19 23:30:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 4528 states have (on average 1.3292844522968197) internal successors, (6019), 4652 states have internal predecessors, (6019), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-19 23:30:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9034 transitions. [2022-07-19 23:30:27,766 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9034 transitions. Word has length 44 [2022-07-19 23:30:27,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:27,766 INFO L495 AbstractCegarLoop]: Abstraction has 6359 states and 9034 transitions. [2022-07-19 23:30:27,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:27,767 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9034 transitions. [2022-07-19 23:30:27,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-19 23:30:27,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:27,768 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:27,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:27,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:27,987 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:27,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2006668090, now seen corresponding path program 1 times [2022-07-19 23:30:27,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:27,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794833271] [2022-07-19 23:30:27,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:27,990 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:27,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:27,993 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) [2022-07-19 23:30:27,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-19 23:30:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:29,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:29,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:30,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:30,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:30,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794833271] [2022-07-19 23:30:30,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794833271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:30,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:30,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 23:30:30,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898115248] [2022-07-19 23:30:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:30,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:30,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:30,508 INFO L87 Difference]: Start difference. First operand 6359 states and 9034 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:30,665 INFO L93 Difference]: Finished difference Result 6361 states and 9035 transitions. [2022-07-19 23:30:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-19 23:30:30,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:30,701 INFO L225 Difference]: With dead ends: 6361 [2022-07-19 23:30:30,702 INFO L226 Difference]: Without dead ends: 6358 [2022-07-19 23:30:30,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:30,707 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1143 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 [2022-07-19 23:30:30,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1143 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:30:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2022-07-19 23:30:30,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2022-07-19 23:30:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4528 states have (on average 1.3290636042402826) internal successors, (6018), 4651 states have internal predecessors, (6018), 1423 states have call successors, (1423), 407 states have call predecessors, (1423), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-19 23:30:30,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9032 transitions. [2022-07-19 23:30:30,903 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9032 transitions. Word has length 45 [2022-07-19 23:30:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:30,903 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9032 transitions. [2022-07-19 23:30:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9032 transitions. [2022-07-19 23:30:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-19 23:30:30,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:30,904 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-19 23:30:30,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-19 23:30:31,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:31,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:31,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2077566477, now seen corresponding path program 1 times [2022-07-19 23:30:31,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:31,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1070211768] [2022-07-19 23:30:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:31,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:31,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:31,132 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) [2022-07-19 23:30:31,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 23:30:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:32,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:32,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:33,894 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-19 23:30:33,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:33,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1070211768] [2022-07-19 23:30:33,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1070211768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:33,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:33,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 23:30:33,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816183407] [2022-07-19 23:30:33,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:33,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:33,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:33,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:33,896 INFO L87 Difference]: Start difference. First operand 6358 states and 9032 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:33,979 INFO L93 Difference]: Finished difference Result 6360 states and 9033 transitions. [2022-07-19 23:30:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:33,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-07-19 23:30:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:33,996 INFO L225 Difference]: With dead ends: 6360 [2022-07-19 23:30:33,997 INFO L226 Difference]: Without dead ends: 6348 [2022-07-19 23:30:33,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:33,999 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1142 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 [2022-07-19 23:30:34,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 23:30:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2022-07-19 23:30:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6348. [2022-07-19 23:30:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 4519 states have (on average 1.3288338127904404) internal successors, (6005), 4641 states have internal predecessors, (6005), 1422 states have call successors, (1422), 407 states have call predecessors, (1422), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-19 23:30:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9018 transitions. [2022-07-19 23:30:34,245 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9018 transitions. Word has length 46 [2022-07-19 23:30:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:34,245 INFO L495 AbstractCegarLoop]: Abstraction has 6348 states and 9018 transitions. [2022-07-19 23:30:34,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-19 23:30:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9018 transitions. [2022-07-19 23:30:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 23:30:34,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:34,253 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:34,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:34,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:34,466 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:34,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1227308281, now seen corresponding path program 1 times [2022-07-19 23:30:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:34,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066051172] [2022-07-19 23:30:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:34,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:34,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:34,471 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) [2022-07-19 23:30:34,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-19 23:30:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:35,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:35,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:35,971 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 23:30:35,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:35,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:35,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066051172] [2022-07-19 23:30:35,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066051172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:35,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:35,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:30:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73846234] [2022-07-19 23:30:35,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:35,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:35,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:35,973 INFO L87 Difference]: Start difference. First operand 6348 states and 9018 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:30:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:36,605 INFO L93 Difference]: Finished difference Result 12802 states and 18190 transitions. [2022-07-19 23:30:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:36,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-19 23:30:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:36,628 INFO L225 Difference]: With dead ends: 12802 [2022-07-19 23:30:36,629 INFO L226 Difference]: Without dead ends: 6476 [2022-07-19 23:30:36,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:36,651 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 52 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:36,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:30:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2022-07-19 23:30:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 6452. [2022-07-19 23:30:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 4622 states have (on average 1.3308091735179577) internal successors, (6151), 4744 states have internal predecessors, (6151), 1422 states have call successors, (1422), 408 states have call predecessors, (1422), 407 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-19 23:30:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 9164 transitions. [2022-07-19 23:30:36,819 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 9164 transitions. Word has length 144 [2022-07-19 23:30:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:36,820 INFO L495 AbstractCegarLoop]: Abstraction has 6452 states and 9164 transitions. [2022-07-19 23:30:36,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 23:30:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 9164 transitions. [2022-07-19 23:30:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 23:30:36,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:36,826 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:30:36,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:37,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:37,051 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:37,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:37,052 INFO L85 PathProgramCache]: Analyzing trace with hash -481170855, now seen corresponding path program 1 times [2022-07-19 23:30:37,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:37,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107374970] [2022-07-19 23:30:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:37,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:37,057 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) [2022-07-19 23:30:37,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 23:30:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:38,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:38,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-19 23:30:39,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:39,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:39,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107374970] [2022-07-19 23:30:39,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107374970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:39,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:39,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:30:39,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820048018] [2022-07-19 23:30:39,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:39,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:39,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:39,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:39,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:39,123 INFO L87 Difference]: Start difference. First operand 6452 states and 9164 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 23:30:41,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:30:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:42,146 INFO L93 Difference]: Finished difference Result 13274 states and 18828 transitions. [2022-07-19 23:30:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:30:42,146 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-07-19 23:30:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:42,186 INFO L225 Difference]: With dead ends: 13274 [2022-07-19 23:30:42,186 INFO L226 Difference]: Without dead ends: 6848 [2022-07-19 23:30:42,211 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 [2022-07-19 23:30:42,212 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 208 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:42,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 23:30:42,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2022-07-19 23:30:42,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 6824. [2022-07-19 23:30:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 4946 states have (on average 1.3275374039627983) internal successors, (6566), 5068 states have internal predecessors, (6566), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 439 states have return successors, (1607), 1411 states have call predecessors, (1607), 1435 states have call successors, (1607) [2022-07-19 23:30:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9611 transitions. [2022-07-19 23:30:42,412 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9611 transitions. Word has length 153 [2022-07-19 23:30:42,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:42,412 INFO L495 AbstractCegarLoop]: Abstraction has 6824 states and 9611 transitions. [2022-07-19 23:30:42,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-19 23:30:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9611 transitions. [2022-07-19 23:30:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-19 23:30:42,417 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:42,417 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 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] [2022-07-19 23:30:42,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:42,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:42,631 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1461989513, now seen corresponding path program 1 times [2022-07-19 23:30:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:42,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748877845] [2022-07-19 23:30:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:42,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:42,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:42,643 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) [2022-07-19 23:30:42,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-19 23:30:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:44,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:30:44,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-19 23:30:45,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:45,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:45,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748877845] [2022-07-19 23:30:45,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748877845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:45,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:45,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:30:45,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404808791] [2022-07-19 23:30:45,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:45,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:30:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:30:45,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:30:45,166 INFO L87 Difference]: Start difference. First operand 6824 states and 9611 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:45,714 INFO L93 Difference]: Finished difference Result 13686 states and 19630 transitions. [2022-07-19 23:30:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:30:45,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-07-19 23:30:45,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:45,743 INFO L225 Difference]: With dead ends: 13686 [2022-07-19 23:30:45,743 INFO L226 Difference]: Without dead ends: 6856 [2022-07-19 23:30:45,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:30:45,768 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 0 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:45,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4540 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:30:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2022-07-19 23:30:46,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6856. [2022-07-19 23:30:46,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 4962 states have (on average 1.3264812575574365) internal successors, (6582), 5100 states have internal predecessors, (6582), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1411 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-19 23:30:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 9699 transitions. [2022-07-19 23:30:46,107 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 9699 transitions. Word has length 160 [2022-07-19 23:30:46,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:46,107 INFO L495 AbstractCegarLoop]: Abstraction has 6856 states and 9699 transitions. [2022-07-19 23:30:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-19 23:30:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 9699 transitions. [2022-07-19 23:30:46,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-19 23:30:46,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:46,112 INFO L195 NwaCegarLoop]: trace histogram [4, 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, 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] [2022-07-19 23:30:46,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:46,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:46,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:46,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash -443990667, now seen corresponding path program 1 times [2022-07-19 23:30:46,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:46,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044945114] [2022-07-19 23:30:46,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:46,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:46,336 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) [2022-07-19 23:30:46,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-19 23:30:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:48,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-19 23:30:48,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:49,496 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 23:30:49,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:49,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:49,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044945114] [2022-07-19 23:30:49,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044945114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:49,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:49,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:30:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346869354] [2022-07-19 23:30:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:49,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:30:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:30:49,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:30:49,498 INFO L87 Difference]: Start difference. First operand 6856 states and 9699 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:30:52,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:30:54,930 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 [] [2022-07-19 23:30:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:30:55,328 INFO L93 Difference]: Finished difference Result 14422 states and 20512 transitions. [2022-07-19 23:30:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:30:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2022-07-19 23:30:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:30:55,385 INFO L225 Difference]: With dead ends: 14422 [2022-07-19 23:30:55,392 INFO L226 Difference]: Without dead ends: 7592 [2022-07-19 23:30:55,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:30:55,415 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 158 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:30:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 5891 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 5.3s Time] [2022-07-19 23:30:55,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-07-19 23:30:55,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6880. [2022-07-19 23:30:55,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6880 states, 4986 states have (on average 1.3249097472924187) internal successors, (6606), 5116 states have internal predecessors, (6606), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-19 23:30:55,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6880 states to 6880 states and 9723 transitions. [2022-07-19 23:30:55,684 INFO L78 Accepts]: Start accepts. Automaton has 6880 states and 9723 transitions. Word has length 172 [2022-07-19 23:30:55,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:30:55,685 INFO L495 AbstractCegarLoop]: Abstraction has 6880 states and 9723 transitions. [2022-07-19 23:30:55,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:30:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states and 9723 transitions. [2022-07-19 23:30:55,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-19 23:30:55,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:30:55,696 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 23:30:55,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-19 23:30:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:30:55,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:30:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:30:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1808771924, now seen corresponding path program 1 times [2022-07-19 23:30:55,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:30:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546425917] [2022-07-19 23:30:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:30:55,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:30:55,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:30:55,927 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) [2022-07-19 23:30:55,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-19 23:30:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:30:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:30:58,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:30:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 23:30:58,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:30:58,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:30:58,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546425917] [2022-07-19 23:30:58,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546425917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:30:58,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:30:58,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:30:58,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805377899] [2022-07-19 23:30:58,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:30:58,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:30:58,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:30:58,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:30:58,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:30:58,642 INFO L87 Difference]: Start difference. First operand 6880 states and 9723 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:31:00,766 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 [] [2022-07-19 23:31:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:00,972 INFO L93 Difference]: Finished difference Result 14822 states and 21076 transitions. [2022-07-19 23:31:00,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:31:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2022-07-19 23:31:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:00,998 INFO L225 Difference]: With dead ends: 14822 [2022-07-19 23:31:00,998 INFO L226 Difference]: Without dead ends: 7968 [2022-07-19 23:31:01,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:31:01,018 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 134 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:01,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 23:31:01,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-19 23:31:01,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7056. [2022-07-19 23:31:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 5162 states have (on average 1.32932971716389) internal successors, (6862), 5292 states have internal predecessors, (6862), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-19 23:31:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 9979 transitions. [2022-07-19 23:31:01,222 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 9979 transitions. Word has length 178 [2022-07-19 23:31:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:01,223 INFO L495 AbstractCegarLoop]: Abstraction has 7056 states and 9979 transitions. [2022-07-19 23:31:01,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:31:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 9979 transitions. [2022-07-19 23:31:01,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 23:31:01,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:01,229 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-07-19 23:31:01,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-19 23:31:01,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:01,455 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:01,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:01,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415916, now seen corresponding path program 1 times [2022-07-19 23:31:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:01,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250574915] [2022-07-19 23:31:01,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:01,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:01,461 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) [2022-07-19 23:31:01,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-19 23:31:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:03,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:31:03,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:03,840 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:03,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:31:03,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:31:03,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250574915] [2022-07-19 23:31:03,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250574915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:03,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:03,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:31:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599001876] [2022-07-19 23:31:03,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:03,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:31:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:31:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:31:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:31:03,841 INFO L87 Difference]: Start difference. First operand 7056 states and 9979 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:04,205 INFO L93 Difference]: Finished difference Result 14134 states and 20010 transitions. [2022-07-19 23:31:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:31:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 182 [2022-07-19 23:31:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:04,276 INFO L225 Difference]: With dead ends: 14134 [2022-07-19 23:31:04,277 INFO L226 Difference]: Without dead ends: 7104 [2022-07-19 23:31:04,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:31:04,289 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 5 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:04,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:31:04,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2022-07-19 23:31:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 7088. [2022-07-19 23:31:04,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7088 states, 5194 states have (on average 1.3288409703504043) internal successors, (6902), 5324 states have internal predecessors, (6902), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-19 23:31:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 10019 transitions. [2022-07-19 23:31:04,471 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 10019 transitions. Word has length 182 [2022-07-19 23:31:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:04,472 INFO L495 AbstractCegarLoop]: Abstraction has 7088 states and 10019 transitions. [2022-07-19 23:31:04,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 10019 transitions. [2022-07-19 23:31:04,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-19 23:31:04,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:04,477 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-07-19 23:31:04,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-19 23:31:04,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:04,689 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:04,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:04,690 INFO L85 PathProgramCache]: Analyzing trace with hash -112961876, now seen corresponding path program 1 times [2022-07-19 23:31:04,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:04,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [733854966] [2022-07-19 23:31:04,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:04,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:04,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:04,694 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) [2022-07-19 23:31:04,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-19 23:31:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:07,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 23:31:07,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:08,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:31:08,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:31:08,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [733854966] [2022-07-19 23:31:08,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [733854966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:08,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:08,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052258765] [2022-07-19 23:31:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:31:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:08,147 INFO L87 Difference]: Start difference. First operand 7088 states and 10019 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:09,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:09,474 INFO L93 Difference]: Finished difference Result 15614 states and 22184 transitions. [2022-07-19 23:31:09,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:31:09,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2022-07-19 23:31:09,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:09,507 INFO L225 Difference]: With dead ends: 15614 [2022-07-19 23:31:09,508 INFO L226 Difference]: Without dead ends: 8552 [2022-07-19 23:31:09,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:31:09,530 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 154 mSDsluCounter, 5081 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:09,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 6394 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 23:31:09,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2022-07-19 23:31:09,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 7120. [2022-07-19 23:31:09,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 5218 states have (on average 1.3273284783441932) internal successors, (6926), 5348 states have internal predecessors, (6926), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-19 23:31:09,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 10051 transitions. [2022-07-19 23:31:09,826 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 10051 transitions. Word has length 184 [2022-07-19 23:31:09,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:09,827 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 10051 transitions. [2022-07-19 23:31:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:09,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 10051 transitions. [2022-07-19 23:31:09,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-19 23:31:09,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:09,832 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2022-07-19 23:31:09,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-19 23:31:10,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:10,059 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:10,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash 415048615, now seen corresponding path program 1 times [2022-07-19 23:31:10,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:10,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511670726] [2022-07-19 23:31:10,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:10,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:10,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:10,065 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) [2022-07-19 23:31:10,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-19 23:31:12,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:12,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:31:12,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:12,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:31:13,526 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:13,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:31:13,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511670726] [2022-07-19 23:31:13,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511670726] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:31:13,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:31:13,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 23:31:13,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459894602] [2022-07-19 23:31:13,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:31:13,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:13,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:31:13,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:13,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:13,529 INFO L87 Difference]: Start difference. First operand 7120 states and 10051 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:14,221 INFO L93 Difference]: Finished difference Result 14294 states and 20202 transitions. [2022-07-19 23:31:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:31:14,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-07-19 23:31:14,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:14,240 INFO L225 Difference]: With dead ends: 14294 [2022-07-19 23:31:14,240 INFO L226 Difference]: Without dead ends: 7200 [2022-07-19 23:31:14,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:14,256 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 29 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:14,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3410 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:31:14,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-07-19 23:31:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7160. [2022-07-19 23:31:14,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 5258 states have (on average 1.3263598326359833) internal successors, (6974), 5388 states have internal predecessors, (6974), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-19 23:31:14,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 10099 transitions. [2022-07-19 23:31:14,429 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 10099 transitions. Word has length 185 [2022-07-19 23:31:14,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:14,429 INFO L495 AbstractCegarLoop]: Abstraction has 7160 states and 10099 transitions. [2022-07-19 23:31:14,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 23:31:14,429 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 10099 transitions. [2022-07-19 23:31:14,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 23:31:14,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:14,434 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2022-07-19 23:31:14,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-19 23:31:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:14,649 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1423043673, now seen corresponding path program 1 times [2022-07-19 23:31:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:14,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964922980] [2022-07-19 23:31:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:14,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:14,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:14,654 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) [2022-07-19 23:31:14,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-19 23:31:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 23:31:17,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:18,447 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:18,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:31:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 23:31:20,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:31:20,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964922980] [2022-07-19 23:31:20,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964922980] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:31:20,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:31:20,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 23:31:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790753812] [2022-07-19 23:31:20,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:31:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 23:31:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:31:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 23:31:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-19 23:31:20,876 INFO L87 Difference]: Start difference. First operand 7160 states and 10099 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 23:31:25,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:25,428 INFO L93 Difference]: Finished difference Result 17198 states and 24474 transitions. [2022-07-19 23:31:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 23:31:25,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 187 [2022-07-19 23:31:25,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:25,460 INFO L225 Difference]: With dead ends: 17198 [2022-07-19 23:31:25,460 INFO L226 Difference]: Without dead ends: 10064 [2022-07-19 23:31:25,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-19 23:31:25,482 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 323 mSDsluCounter, 9955 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 11454 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:25,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 11454 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 23:31:25,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-07-19 23:31:25,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7152. [2022-07-19 23:31:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 5250 states have (on average 1.326857142857143) internal successors, (6966), 5380 states have internal predecessors, (6966), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-19 23:31:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 10091 transitions. [2022-07-19 23:31:25,752 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 10091 transitions. Word has length 187 [2022-07-19 23:31:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:25,753 INFO L495 AbstractCegarLoop]: Abstraction has 7152 states and 10091 transitions. [2022-07-19 23:31:25,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 23:31:25,753 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 10091 transitions. [2022-07-19 23:31:25,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-19 23:31:25,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:25,759 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2022-07-19 23:31:25,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-19 23:31:25,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:25,968 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:25,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1679269715, now seen corresponding path program 1 times [2022-07-19 23:31:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:25,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142902788] [2022-07-19 23:31:25,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:25,971 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:25,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:25,983 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:31:26,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-19 23:31:28,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:31:28,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 23:31:28,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:31:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-19 23:31:29,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:31:29,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:31:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142902788] [2022-07-19 23:31:29,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142902788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:31:29,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:31:29,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:31:29,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872068779] [2022-07-19 23:31:29,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:31:29,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:31:29,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:31:29,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:31:29,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:31:29,434 INFO L87 Difference]: Start difference. First operand 7152 states and 10091 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 23:31:31,591 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:31:36,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:31:36,139 INFO L93 Difference]: Finished difference Result 18160 states and 25375 transitions. [2022-07-19 23:31:36,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 23:31:36,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 201 [2022-07-19 23:31:36,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:31:36,174 INFO L225 Difference]: With dead ends: 18160 [2022-07-19 23:31:36,175 INFO L226 Difference]: Without dead ends: 11034 [2022-07-19 23:31:36,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:31:36,196 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 624 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 7113 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:31:36,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 7113 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2022-07-19 23:31:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11034 states. [2022-07-19 23:31:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11034 to 7184. [2022-07-19 23:31:36,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 5282 states have (on average 1.324876940552821) internal successors, (6998), 5412 states have internal predecessors, (6998), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-19 23:31:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10123 transitions. [2022-07-19 23:31:36,489 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10123 transitions. Word has length 201 [2022-07-19 23:31:36,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:31:36,490 INFO L495 AbstractCegarLoop]: Abstraction has 7184 states and 10123 transitions. [2022-07-19 23:31:36,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 23:31:36,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10123 transitions. [2022-07-19 23:31:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-19 23:31:36,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:31:36,493 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1] [2022-07-19 23:31:36,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-19 23:31:36,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:31:36,720 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:31:36,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:31:36,720 INFO L85 PathProgramCache]: Analyzing trace with hash 399406037, now seen corresponding path program 1 times [2022-07-19 23:31:36,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:31:36,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422160967] [2022-07-19 23:31:36,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:31:36,723 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:31:36,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:31:36,731 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:31:36,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process