./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:07:28,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:07:28,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:07:28,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:07:28,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:07:28,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:07:28,117 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:07:28,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:07:28,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:07:28,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:07:28,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:07:28,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:07:28,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:07:28,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:07:28,132 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:07:28,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:07:28,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:07:28,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:07:28,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:07:28,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:07:28,145 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:07:28,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:07:28,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:07:28,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:07:28,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:07:28,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:07:28,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:07:28,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:07:28,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:07:28,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:07:28,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:07:28,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:07:28,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:07:28,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:07:28,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:07:28,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:07:28,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:07:28,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:07:28,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:07:28,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:07:28,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:07:28,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:07:28,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-23 01:07:28,196 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:07:28,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:07:28,197 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:07:28,197 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:07:28,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:07:28,198 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:07:28,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:07:28,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:07:28,199 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:07:28,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:07:28,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 01:07:28,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:07:28,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:07:28,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:07:28,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:07:28,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:07:28,201 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:07:28,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:07:28,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:07:28,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:07:28,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:07:28,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:07:28,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:07:28,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:07:28,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:07:28,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 01:07:28,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 01:07:28,203 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:07:28,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:07:28,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:07:28,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-23 01:07:28,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:07:28,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:07:28,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:07:28,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:07:28,477 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:07:28,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-23 01:07:28,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113680559/bc4e30101b4d429a9a4b502ebde5537f/FLAGd0f8f5c60 [2022-07-23 01:07:29,203 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:07:29,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-23 01:07:29,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113680559/bc4e30101b4d429a9a4b502ebde5537f/FLAGd0f8f5c60 [2022-07-23 01:07:29,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113680559/bc4e30101b4d429a9a4b502ebde5537f [2022-07-23 01:07:29,561 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:07:29,562 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:07:29,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:07:29,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:07:29,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:07:29,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:07:29" (1/1) ... [2022-07-23 01:07:29,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349e8a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:29, skipping insertion in model container [2022-07-23 01:07:29,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:07:29" (1/1) ... [2022-07-23 01:07:29,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:07:29,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:07:31,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-23 01:07:31,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:07:31,714 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:07:31,933 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) [2022-07-23 01:07:31,940 INFO L158 Benchmark]: Toolchain (without parser) took 2375.62ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 65.1MB in the beginning and 73.3MB in the end (delta: -8.2MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-07-23 01:07:31,941 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory was 50.1MB in the beginning and 50.1MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 01:07:31,944 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2373.48ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.8MB in the beginning and 73.3MB in the end (delta: -8.5MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. [2022-07-23 01:07:31,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 79.7MB. Free memory was 50.1MB in the beginning and 50.1MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2373.48ms. Allocated memory was 109.1MB in the beginning and 138.4MB in the end (delta: 29.4MB). Free memory was 64.8MB in the beginning and 73.3MB in the end (delta: -8.5MB). Peak memory consumption was 46.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 01:07:33,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 01:07:33,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 01:07:33,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 01:07:33,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 01:07:33,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 01:07:33,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 01:07:33,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 01:07:33,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 01:07:33,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 01:07:33,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 01:07:33,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 01:07:33,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 01:07:33,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 01:07:33,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 01:07:33,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 01:07:33,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 01:07:33,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 01:07:33,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 01:07:33,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 01:07:33,921 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 01:07:33,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 01:07:33,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 01:07:33,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 01:07:33,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 01:07:33,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 01:07:33,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 01:07:33,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 01:07:33,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 01:07:33,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 01:07:33,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 01:07:33,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 01:07:33,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 01:07:33,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 01:07:33,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 01:07:33,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 01:07:33,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 01:07:33,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 01:07:33,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 01:07:33,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 01:07:33,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 01:07:33,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 01:07:33,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-23 01:07:33,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 01:07:33,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 01:07:33,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 01:07:33,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 01:07:33,982 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 01:07:33,982 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 01:07:33,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 01:07:33,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 01:07:33,983 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 01:07:33,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 01:07:33,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 01:07:33,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 01:07:33,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 01:07:33,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 01:07:33,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 01:07:33,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 01:07:33,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 01:07:33,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 01:07:33,985 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 01:07:33,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 01:07:33,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 01:07:33,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 01:07:33,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 01:07:33,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:07:33,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 01:07:33,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 01:07:33,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 01:07:33,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 01:07:33,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 01:07:33,987 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 01:07:33,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 01:07:33,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 01:07:33,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 01:07:33,988 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57d203c2bb9e5fb46a500992932f18e1bc69473edc196ab4ca3ccbbd153a7dab [2022-07-23 01:07:34,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 01:07:34,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 01:07:34,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 01:07:34,390 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 01:07:34,391 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 01:07:34,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-23 01:07:34,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/795d93414/a915449296cd4873b81f7419a89e4e77/FLAGcfa6fce54 [2022-07-23 01:07:35,295 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 01:07:35,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-23 01:07:35,359 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/795d93414/a915449296cd4873b81f7419a89e4e77/FLAGcfa6fce54 [2022-07-23 01:07:35,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/795d93414/a915449296cd4873b81f7419a89e4e77 [2022-07-23 01:07:35,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 01:07:35,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 01:07:35,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 01:07:35,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 01:07:35,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 01:07:35,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:07:35" (1/1) ... [2022-07-23 01:07:35,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e265331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:35, skipping insertion in model container [2022-07-23 01:07:35,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:07:35" (1/1) ... [2022-07-23 01:07:35,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 01:07:35,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:07:37,563 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-23 01:07:37,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:07:37,870 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 01:07:37,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 01:07:38,260 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-23 01:07:38,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:07:38,367 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 01:07:38,630 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[258961,258974] [2022-07-23 01:07:38,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 01:07:38,764 INFO L208 MainTranslator]: Completed translation [2022-07-23 01:07:38,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38 WrapperNode [2022-07-23 01:07:38,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 01:07:38,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 01:07:38,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 01:07:38,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 01:07:38,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:38,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,051 INFO L137 Inliner]: procedures = 232, calls = 1688, calls flagged for inlining = 75, calls inlined = 52, statements flattened = 3434 [2022-07-23 01:07:39,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 01:07:39,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 01:07:39,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 01:07:39,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 01:07:39,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 01:07:39,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 01:07:39,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 01:07:39,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 01:07:39,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (1/1) ... [2022-07-23 01:07:39,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 01:07:39,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 01:07:39,330 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) [2022-07-23 01:07:39,352 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 [2022-07-23 01:07:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-23 01:07:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-23 01:07:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-23 01:07:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-23 01:07:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-23 01:07:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-23 01:07:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-23 01:07:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-23 01:07:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-23 01:07:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-23 01:07:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-23 01:07:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-23 01:07:39,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-23 01:07:39,373 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-23 01:07:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_dev [2022-07-23 01:07:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_dev [2022-07-23 01:07:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-07-23 01:07:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-07-23 01:07:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_common [2022-07-23 01:07:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_common [2022-07-23 01:07:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-23 01:07:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-23 01:07:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-23 01:07:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-23 01:07:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-23 01:07:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-23 01:07:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-23 01:07:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-23 01:07:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 01:07:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 01:07:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-23 01:07:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-23 01:07:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-23 01:07:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-23 01:07:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-23 01:07:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-23 01:07:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 01:07:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 01:07:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 01:07:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-23 01:07:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-23 01:07:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-23 01:07:39,379 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-23 01:07:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-23 01:07:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-23 01:07:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 01:07:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-23 01:07:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-23 01:07:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-23 01:07:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-23 01:07:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-23 01:07:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-23 01:07:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-23 01:07:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-23 01:07:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-23 01:07:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-23 01:07:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-23 01:07:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-23 01:07:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-23 01:07:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-23 01:07:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-23 01:07:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-23 01:07:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-23 01:07:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-23 01:07:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-23 01:07:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-23 01:07:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-23 01:07:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-23 01:07:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-23 01:07:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-23 01:07:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-23 01:07:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-23 01:07:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-23 01:07:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-23 01:07:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 01:07:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-23 01:07:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-23 01:07:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-23 01:07:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-23 01:07:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-23 01:07:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-23 01:07:39,387 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-23 01:07:39,387 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-23 01:07:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-23 01:07:39,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-23 01:07:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-23 01:07:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-23 01:07:39,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-23 01:07:39,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-23 01:07:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-23 01:07:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 01:07:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 01:07:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-23 01:07:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-23 01:07:39,390 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-23 01:07:39,390 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-23 01:07:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-23 01:07:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-23 01:07:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-23 01:07:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-23 01:07:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 01:07:39,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-23 01:07:39,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev_of_p54u_priv [2022-07-23 01:07:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-23 01:07:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-23 01:07:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-23 01:07:39,392 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-23 01:07:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-23 01:07:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-23 01:07:39,393 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-23 01:07:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-23 01:07:39,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-23 01:07:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-23 01:07:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-23 01:07:39,396 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-23 01:07:39,396 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-23 01:07:39,397 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-23 01:07:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-23 01:07:39,398 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-23 01:07:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-23 01:07:39,399 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-23 01:07:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-23 01:07:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-23 01:07:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-23 01:07:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-23 01:07:39,405 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-23 01:07:39,405 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-23 01:07:39,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 01:07:39,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 01:07:39,907 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 01:07:39,910 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 01:07:40,588 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-23 01:08:47,237 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 01:08:47,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 01:08:47,249 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 01:08:47,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:08:47 BoogieIcfgContainer [2022-07-23 01:08:47,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 01:08:47,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 01:08:47,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 01:08:47,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 01:08:47,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:07:35" (1/3) ... [2022-07-23 01:08:47,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537cf87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:08:47, skipping insertion in model container [2022-07-23 01:08:47,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:07:38" (2/3) ... [2022-07-23 01:08:47,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537cf87c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:08:47, skipping insertion in model container [2022-07-23 01:08:47,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:08:47" (3/3) ... [2022-07-23 01:08:47,260 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-23 01:08:47,273 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 01:08:47,274 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-23 01:08:47,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 01:08:47,340 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@3748f7d9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b3ac7c0 [2022-07-23 01:08:47,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-23 01:08:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) [2022-07-23 01:08:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-23 01:08:47,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:08:47,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:08:47,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:08:47,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:08:47,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1349896211, now seen corresponding path program 1 times [2022-07-23 01:08:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:08:47,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680033383] [2022-07-23 01:08:47,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:08:47,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:08:47,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:08:47,387 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) [2022-07-23 01:08:47,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 01:08:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:08:49,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 01:08:49,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:08:49,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:08:49,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:08:49,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:08:49,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680033383] [2022-07-23 01:08:49,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680033383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:08:49,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:08:49,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:08:49,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286156051] [2022-07-23 01:08:49,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:08:49,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 01:08:49,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:08:49,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 01:08:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:08:49,429 INFO L87 Difference]: Start difference. First operand has 729 states, 516 states have (on average 1.3468992248062015) internal successors, (695), 540 states have internal predecessors, (695), 163 states have call successors, (163), 49 states have call predecessors, (163), 48 states have return successors, (159), 159 states have call predecessors, (159), 159 states have call successors, (159) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 01:08:49,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:08:49,549 INFO L93 Difference]: Finished difference Result 1453 states and 2054 transitions. [2022-07-23 01:08:49,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 01:08:49,551 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-23 01:08:49,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:08:49,572 INFO L225 Difference]: With dead ends: 1453 [2022-07-23 01:08:49,573 INFO L226 Difference]: Without dead ends: 718 [2022-07-23 01:08:49,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 01:08:49,588 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:08:49,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:08:49,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-07-23 01:08:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-07-23 01:08:49,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 511 states have (on average 1.3346379647749511) internal successors, (682), 529 states have internal predecessors, (682), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-23 01:08:49,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 994 transitions. [2022-07-23 01:08:49,710 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 994 transitions. Word has length 39 [2022-07-23 01:08:49,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:08:49,710 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 994 transitions. [2022-07-23 01:08:49,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 01:08:49,711 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 994 transitions. [2022-07-23 01:08:49,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-23 01:08:49,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:08:49,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:08:49,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-23 01:08:49,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:08:49,936 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:08:49,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:08:49,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1859369301, now seen corresponding path program 1 times [2022-07-23 01:08:49,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:08:49,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886556728] [2022-07-23 01:08:49,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:08:49,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:08:49,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:08:49,944 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) [2022-07-23 01:08:49,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 01:08:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:08:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 01:08:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:08:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:08:52,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:08:52,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:08:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886556728] [2022-07-23 01:08:52,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886556728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:08:52,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:08:52,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 01:08:52,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980064817] [2022-07-23 01:08:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:08:52,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 01:08:52,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:08:52,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 01:08:52,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 01:08:52,311 INFO L87 Difference]: Start difference. First operand 718 states and 994 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 01:08:52,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:08:52,720 INFO L93 Difference]: Finished difference Result 1433 states and 1985 transitions. [2022-07-23 01:08:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 01:08:52,721 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-07-23 01:08:52,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:08:52,729 INFO L225 Difference]: With dead ends: 1433 [2022-07-23 01:08:52,732 INFO L226 Difference]: Without dead ends: 719 [2022-07-23 01:08:52,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:08:52,741 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 176 mSDsluCounter, 2770 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 01:08:52,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 3762 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 01:08:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-07-23 01:08:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2022-07-23 01:08:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 512 states have (on average 1.333984375) internal successors, (683), 530 states have internal predecessors, (683), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-23 01:08:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 995 transitions. [2022-07-23 01:08:52,813 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 995 transitions. Word has length 39 [2022-07-23 01:08:52,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:08:52,816 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 995 transitions. [2022-07-23 01:08:52,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-23 01:08:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 995 transitions. [2022-07-23 01:08:52,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-23 01:08:52,823 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:08:52,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:08:52,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 01:08:53,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:08:53,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:08:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:08:53,044 INFO L85 PathProgramCache]: Analyzing trace with hash 290922194, now seen corresponding path program 1 times [2022-07-23 01:08:53,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:08:53,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413998662] [2022-07-23 01:08:53,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:08:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:08:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:08:53,052 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) [2022-07-23 01:08:53,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-23 01:08:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:08:55,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 01:08:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:08:55,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:08:55,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:08:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:08:56,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:08:56,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413998662] [2022-07-23 01:08:56,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413998662] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:08:56,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:08:56,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-23 01:08:56,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527620131] [2022-07-23 01:08:56,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:08:56,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 01:08:56,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:08:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 01:08:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-23 01:08:56,797 INFO L87 Difference]: Start difference. First operand 719 states and 995 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-23 01:08:57,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:08:57,431 INFO L93 Difference]: Finished difference Result 1435 states and 1987 transitions. [2022-07-23 01:08:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:08:57,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 40 [2022-07-23 01:08:57,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:08:57,437 INFO L225 Difference]: With dead ends: 1435 [2022-07-23 01:08:57,438 INFO L226 Difference]: Without dead ends: 720 [2022-07-23 01:08:57,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-23 01:08:57,443 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 177 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 5542 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:08:57,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 5542 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 01:08:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-07-23 01:08:57,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 720. [2022-07-23 01:08:57,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 513 states have (on average 1.3333333333333333) internal successors, (684), 531 states have internal predecessors, (684), 159 states have call successors, (159), 48 states have call predecessors, (159), 47 states have return successors, (153), 153 states have call predecessors, (153), 153 states have call successors, (153) [2022-07-23 01:08:57,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 996 transitions. [2022-07-23 01:08:57,484 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 996 transitions. Word has length 40 [2022-07-23 01:08:57,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:08:57,485 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 996 transitions. [2022-07-23 01:08:57,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-07-23 01:08:57,486 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 996 transitions. [2022-07-23 01:08:57,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-23 01:08:57,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:08:57,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:08:57,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-23 01:08:57,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:08:57,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:08:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:08:57,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1769518197, now seen corresponding path program 2 times [2022-07-23 01:08:57,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:08:57,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383354626] [2022-07-23 01:08:57,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:08:57,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:08:57,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:08:57,723 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) [2022-07-23 01:08:57,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 01:08:59,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:08:59,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:08:59,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:08:59,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:00,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-23 01:09:00,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:00,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:00,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383354626] [2022-07-23 01:09:00,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383354626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:00,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:00,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:09:00,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054160524] [2022-07-23 01:09:00,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:00,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:00,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:00,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:00,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:00,011 INFO L87 Difference]: Start difference. First operand 720 states and 996 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 01:09:02,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:09:02,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:02,564 INFO L93 Difference]: Finished difference Result 2125 states and 2944 transitions. [2022-07-23 01:09:02,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:02,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2022-07-23 01:09:02,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:02,573 INFO L225 Difference]: With dead ends: 2125 [2022-07-23 01:09:02,573 INFO L226 Difference]: Without dead ends: 1413 [2022-07-23 01:09:02,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:02,578 INFO L413 NwaCegarLoop]: 1159 mSDtfsCounter, 959 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:02,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 2134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-23 01:09:02,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-23 01:09:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1409. [2022-07-23 01:09:02,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1005 states have (on average 1.3333333333333333) internal successors, (1340), 1036 states have internal predecessors, (1340), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1952 transitions. [2022-07-23 01:09:02,647 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1952 transitions. Word has length 41 [2022-07-23 01:09:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 1409 states and 1952 transitions. [2022-07-23 01:09:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 01:09:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1952 transitions. [2022-07-23 01:09:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-23 01:09:02,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:02,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:02,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:02,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:02,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1815198130, now seen corresponding path program 1 times [2022-07-23 01:09:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:02,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16762055] [2022-07-23 01:09:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:02,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:02,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:02,877 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) [2022-07-23 01:09:02,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 01:09:04,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:05,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 3180 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:09:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:09:05,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:09:08,339 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 01:09:08,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:08,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16762055] [2022-07-23 01:09:08,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16762055] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:09:08,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:09:08,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-23 01:09:08,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035814921] [2022-07-23 01:09:08,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:09:08,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 01:09:08,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 01:09:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-23 01:09:08,342 INFO L87 Difference]: Start difference. First operand 1409 states and 1952 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 01:09:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:09,323 INFO L93 Difference]: Finished difference Result 2808 states and 3895 transitions. [2022-07-23 01:09:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 01:09:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 61 [2022-07-23 01:09:09,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:09,334 INFO L225 Difference]: With dead ends: 2808 [2022-07-23 01:09:09,334 INFO L226 Difference]: Without dead ends: 1411 [2022-07-23 01:09:09,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-23 01:09:09,342 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 354 mSDsluCounter, 4749 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:09,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 5741 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-23 01:09:09,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-23 01:09:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-23 01:09:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3326713008937439) internal successors, (1342), 1038 states have internal predecessors, (1342), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:09,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1954 transitions. [2022-07-23 01:09:09,398 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1954 transitions. Word has length 61 [2022-07-23 01:09:09,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:09,399 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1954 transitions. [2022-07-23 01:09:09,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 11 states have internal predecessors, (51), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 01:09:09,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1954 transitions. [2022-07-23 01:09:09,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-23 01:09:09,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:09,402 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:09,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:09,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:09,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:09,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:09,624 INFO L85 PathProgramCache]: Analyzing trace with hash 934865561, now seen corresponding path program 2 times [2022-07-23 01:09:09,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:09,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892823563] [2022-07-23 01:09:09,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:09:09,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:09,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:09,631 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) [2022-07-23 01:09:09,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 01:09:11,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:09:11,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:09:11,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 3040 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:11,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-23 01:09:11,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:11,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:11,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892823563] [2022-07-23 01:09:11,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892823563] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:11,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:11,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:09:11,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813938488] [2022-07-23 01:09:11,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:11,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:11,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:11,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:11,999 INFO L87 Difference]: Start difference. First operand 1411 states and 1954 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:12,331 INFO L93 Difference]: Finished difference Result 1433 states and 1980 transitions. [2022-07-23 01:09:12,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:12,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 62 [2022-07-23 01:09:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:12,341 INFO L225 Difference]: With dead ends: 1433 [2022-07-23 01:09:12,341 INFO L226 Difference]: Without dead ends: 1422 [2022-07-23 01:09:12,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:12,344 INFO L413 NwaCegarLoop]: 1006 mSDtfsCounter, 989 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:12,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1019 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 01:09:12,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-07-23 01:09:12,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1411. [2022-07-23 01:09:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1007 states have (on average 1.3316782522343595) internal successors, (1341), 1038 states have internal predecessors, (1341), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:12,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1953 transitions. [2022-07-23 01:09:12,405 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1953 transitions. Word has length 62 [2022-07-23 01:09:12,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:12,405 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1953 transitions. [2022-07-23 01:09:12,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:12,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1953 transitions. [2022-07-23 01:09:12,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-23 01:09:12,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:12,408 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:12,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:12,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:12,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:12,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:12,628 INFO L85 PathProgramCache]: Analyzing trace with hash 992123863, now seen corresponding path program 1 times [2022-07-23 01:09:12,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:12,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128258867] [2022-07-23 01:09:12,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:12,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:12,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:12,635 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) [2022-07-23 01:09:12,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 01:09:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:14,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 3190 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 01:09:14,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 01:09:16,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:09:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-23 01:09:19,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:19,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128258867] [2022-07-23 01:09:19,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128258867] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:09:19,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:09:19,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-23 01:09:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160908125] [2022-07-23 01:09:19,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:09:19,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-23 01:09:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:19,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-23 01:09:19,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-23 01:09:19,524 INFO L87 Difference]: Start difference. First operand 1411 states and 1953 transitions. Second operand has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 01:09:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:20,896 INFO L93 Difference]: Finished difference Result 2812 states and 3897 transitions. [2022-07-23 01:09:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 01:09:20,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) Word has length 62 [2022-07-23 01:09:20,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:20,905 INFO L225 Difference]: With dead ends: 2812 [2022-07-23 01:09:20,906 INFO L226 Difference]: Without dead ends: 1413 [2022-07-23 01:09:20,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-23 01:09:20,914 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 181 mSDsluCounter, 5540 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:20,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 6532 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-23 01:09:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1413 states. [2022-07-23 01:09:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1413 to 1413. [2022-07-23 01:09:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1009 states have (on average 1.3310208126858276) internal successors, (1343), 1040 states have internal predecessors, (1343), 309 states have call successors, (309), 95 states have call predecessors, (309), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1955 transitions. [2022-07-23 01:09:20,973 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1955 transitions. Word has length 62 [2022-07-23 01:09:20,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:20,973 INFO L495 AbstractCegarLoop]: Abstraction has 1413 states and 1955 transitions. [2022-07-23 01:09:20,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.818181818181818) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-23 01:09:20,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1955 transitions. [2022-07-23 01:09:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-23 01:09:20,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:20,975 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:21,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:21,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:21,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:21,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:21,196 INFO L85 PathProgramCache]: Analyzing trace with hash -528382000, now seen corresponding path program 2 times [2022-07-23 01:09:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:21,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315765813] [2022-07-23 01:09:21,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:09:21,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:21,216 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) [2022-07-23 01:09:21,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-23 01:09:23,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:09:23,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:09:23,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:23,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:25,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 01:09:25,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:25,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315765813] [2022-07-23 01:09:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315765813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:25,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:25,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:09:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913292412] [2022-07-23 01:09:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:25,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:25,500 INFO L87 Difference]: Start difference. First operand 1413 states and 1955 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:25,558 INFO L93 Difference]: Finished difference Result 1415 states and 1956 transitions. [2022-07-23 01:09:25,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:25,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 63 [2022-07-23 01:09:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:25,569 INFO L225 Difference]: With dead ends: 1415 [2022-07-23 01:09:25,569 INFO L226 Difference]: Without dead ends: 1412 [2022-07-23 01:09:25,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:25,572 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 948 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:25,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 991 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:09:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-07-23 01:09:25,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1412. [2022-07-23 01:09:25,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1412 states, 1009 states have (on average 1.330029732408325) internal successors, (1342), 1039 states have internal predecessors, (1342), 308 states have call successors, (308), 95 states have call predecessors, (308), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1412 states to 1412 states and 1953 transitions. [2022-07-23 01:09:25,637 INFO L78 Accepts]: Start accepts. Automaton has 1412 states and 1953 transitions. Word has length 63 [2022-07-23 01:09:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:25,638 INFO L495 AbstractCegarLoop]: Abstraction has 1412 states and 1953 transitions. [2022-07-23 01:09:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 1412 states and 1953 transitions. [2022-07-23 01:09:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 01:09:25,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:25,640 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:25,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-23 01:09:25,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:25,868 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash 799813546, now seen corresponding path program 1 times [2022-07-23 01:09:25,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:25,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189148814] [2022-07-23 01:09:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:25,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:25,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:25,874 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) [2022-07-23 01:09:25,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-23 01:09:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:28,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:28,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 01:09:30,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:30,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:30,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189148814] [2022-07-23 01:09:30,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189148814] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:30,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:30,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:09:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757831422] [2022-07-23 01:09:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:30,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:30,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:30,439 INFO L87 Difference]: Start difference. First operand 1412 states and 1953 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:30,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:30,492 INFO L93 Difference]: Finished difference Result 1414 states and 1954 transitions. [2022-07-23 01:09:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:30,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2022-07-23 01:09:30,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:30,500 INFO L225 Difference]: With dead ends: 1414 [2022-07-23 01:09:30,501 INFO L226 Difference]: Without dead ends: 1411 [2022-07-23 01:09:30,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:30,503 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:30,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:09:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-07-23 01:09:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1411. [2022-07-23 01:09:30,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1009 states have (on average 1.3290386521308226) internal successors, (1341), 1038 states have internal predecessors, (1341), 307 states have call successors, (307), 95 states have call predecessors, (307), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:30,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1951 transitions. [2022-07-23 01:09:30,565 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1951 transitions. Word has length 64 [2022-07-23 01:09:30,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:30,565 INFO L495 AbstractCegarLoop]: Abstraction has 1411 states and 1951 transitions. [2022-07-23 01:09:30,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:30,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1951 transitions. [2022-07-23 01:09:30,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-23 01:09:30,567 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:30,568 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:30,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:30,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:30,783 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:30,784 INFO L85 PathProgramCache]: Analyzing trace with hash -975792621, now seen corresponding path program 1 times [2022-07-23 01:09:30,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:30,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487979878] [2022-07-23 01:09:30,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:30,788 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) [2022-07-23 01:09:30,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-23 01:09:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:33,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:33,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 01:09:35,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:35,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:35,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487979878] [2022-07-23 01:09:35,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487979878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:35,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:35,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:09:35,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190522961] [2022-07-23 01:09:35,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:35,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:35,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:35,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:35,247 INFO L87 Difference]: Start difference. First operand 1411 states and 1951 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:35,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:35,298 INFO L93 Difference]: Finished difference Result 1413 states and 1952 transitions. [2022-07-23 01:09:35,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:35,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2022-07-23 01:09:35,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:35,307 INFO L225 Difference]: With dead ends: 1413 [2022-07-23 01:09:35,307 INFO L226 Difference]: Without dead ends: 1410 [2022-07-23 01:09:35,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:35,309 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:35,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 987 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 01:09:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-07-23 01:09:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-07-23 01:09:35,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1009 states have (on average 1.32804757185332) internal successors, (1340), 1037 states have internal predecessors, (1340), 306 states have call successors, (306), 95 states have call predecessors, (306), 94 states have return successors, (303), 303 states have call predecessors, (303), 303 states have call successors, (303) [2022-07-23 01:09:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1949 transitions. [2022-07-23 01:09:35,367 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1949 transitions. Word has length 65 [2022-07-23 01:09:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:35,368 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1949 transitions. [2022-07-23 01:09:35,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:35,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1949 transitions. [2022-07-23 01:09:35,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-23 01:09:35,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:35,369 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:35,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:35,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:35,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:35,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:35,592 INFO L85 PathProgramCache]: Analyzing trace with hash -185004083, now seen corresponding path program 1 times [2022-07-23 01:09:35,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:35,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943930705] [2022-07-23 01:09:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:35,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:35,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:35,602 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) [2022-07-23 01:09:35,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-23 01:09:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:37,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 3204 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:37,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-23 01:09:40,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:40,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:40,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943930705] [2022-07-23 01:09:40,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943930705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:40,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:40,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 01:09:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959087527] [2022-07-23 01:09:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:40,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:40,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:40,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:40,147 INFO L87 Difference]: Start difference. First operand 1410 states and 1949 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:40,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:40,350 INFO L93 Difference]: Finished difference Result 4176 states and 5791 transitions. [2022-07-23 01:09:40,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:40,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 66 [2022-07-23 01:09:40,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:40,371 INFO L225 Difference]: With dead ends: 4176 [2022-07-23 01:09:40,372 INFO L226 Difference]: Without dead ends: 2776 [2022-07-23 01:09:40,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:40,380 INFO L413 NwaCegarLoop]: 1171 mSDtfsCounter, 931 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:40,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 2140 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:09:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2022-07-23 01:09:40,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2771. [2022-07-23 01:09:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2771 states, 1981 states have (on average 1.331145885916204) internal successors, (2637), 2035 states have internal predecessors, (2637), 605 states have call successors, (605), 187 states have call predecessors, (605), 184 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-23 01:09:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 3844 transitions. [2022-07-23 01:09:40,505 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 3844 transitions. Word has length 66 [2022-07-23 01:09:40,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:40,506 INFO L495 AbstractCegarLoop]: Abstraction has 2771 states and 3844 transitions. [2022-07-23 01:09:40,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-23 01:09:40,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 3844 transitions. [2022-07-23 01:09:40,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-23 01:09:40,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:40,509 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:40,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:40,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:40,732 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:40,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:40,732 INFO L85 PathProgramCache]: Analyzing trace with hash -779176628, now seen corresponding path program 1 times [2022-07-23 01:09:40,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:40,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443682073] [2022-07-23 01:09:40,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:40,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:40,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:40,737 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) [2022-07-23 01:09:40,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-23 01:09:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:43,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 3558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:09:43,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:43,550 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-23 01:09:43,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:43,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443682073] [2022-07-23 01:09:43,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443682073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:43,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:43,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:09:43,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223070151] [2022-07-23 01:09:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:43,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:09:43,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:43,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:09:43,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:43,552 INFO L87 Difference]: Start difference. First operand 2771 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 01:09:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:44,194 INFO L93 Difference]: Finished difference Result 5599 states and 7766 transitions. [2022-07-23 01:09:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:09:44,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 112 [2022-07-23 01:09:44,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:44,211 INFO L225 Difference]: With dead ends: 5599 [2022-07-23 01:09:44,212 INFO L226 Difference]: Without dead ends: 2846 [2022-07-23 01:09:44,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:09:44,224 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 52 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:44,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1948 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-23 01:09:44,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2846 states. [2022-07-23 01:09:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2846 to 2833. [2022-07-23 01:09:44,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2833 states, 2041 states have (on average 1.33219010289074) internal successors, (2719), 2095 states have internal predecessors, (2719), 605 states have call successors, (605), 189 states have call predecessors, (605), 186 states have return successors, (602), 600 states have call predecessors, (602), 602 states have call successors, (602) [2022-07-23 01:09:44,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3926 transitions. [2022-07-23 01:09:44,363 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3926 transitions. Word has length 112 [2022-07-23 01:09:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:44,363 INFO L495 AbstractCegarLoop]: Abstraction has 2833 states and 3926 transitions. [2022-07-23 01:09:44,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-23 01:09:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3926 transitions. [2022-07-23 01:09:44,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-23 01:09:44,370 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:44,370 INFO L195 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:44,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:44,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:44,584 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:44,584 INFO L85 PathProgramCache]: Analyzing trace with hash -2095317379, now seen corresponding path program 1 times [2022-07-23 01:09:44,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:44,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [865272850] [2022-07-23 01:09:44,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:44,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:44,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:44,591 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) [2022-07-23 01:09:44,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-23 01:09:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 3652 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 01:09:47,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-23 01:09:48,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:09:48,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:09:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [865272850] [2022-07-23 01:09:48,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [865272850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:09:48,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:09:48,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 01:09:48,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516122547] [2022-07-23 01:09:48,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:09:48,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 01:09:48,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:09:48,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 01:09:48,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 01:09:48,575 INFO L87 Difference]: Start difference. First operand 2833 states and 3926 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:09:51,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:09:53,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:09:53,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:09:53,687 INFO L93 Difference]: Finished difference Result 5905 states and 8249 transitions. [2022-07-23 01:09:53,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 01:09:53,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 141 [2022-07-23 01:09:53,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:09:53,710 INFO L225 Difference]: With dead ends: 5905 [2022-07-23 01:09:53,711 INFO L226 Difference]: Without dead ends: 3102 [2022-07-23 01:09:53,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-23 01:09:53,770 INFO L413 NwaCegarLoop]: 1072 mSDtfsCounter, 152 mSDsluCounter, 4119 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 5191 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-23 01:09:53,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 5191 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2022-07-23 01:09:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2022-07-23 01:09:53,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 2853. [2022-07-23 01:09:53,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2853 states, 2057 states have (on average 1.329606222654351) internal successors, (2735), 2111 states have internal predecessors, (2735), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-23 01:09:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2853 states to 2853 states and 3970 transitions. [2022-07-23 01:09:53,911 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 3970 transitions. Word has length 141 [2022-07-23 01:09:53,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:09:53,911 INFO L495 AbstractCegarLoop]: Abstraction has 2853 states and 3970 transitions. [2022-07-23 01:09:53,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-23 01:09:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 3970 transitions. [2022-07-23 01:09:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-23 01:09:53,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:09:53,916 INFO L195 NwaCegarLoop]: trace histogram [8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:09:54,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-23 01:09:54,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:09:54,131 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:09:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:09:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1072486492, now seen corresponding path program 1 times [2022-07-23 01:09:54,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:09:54,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076673662] [2022-07-23 01:09:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:09:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:09:54,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:09:54,137 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) [2022-07-23 01:09:54,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-23 01:09:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:09:57,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 3669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 01:09:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:09:58,743 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 37 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-23 01:09:58,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:10:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:10:01,730 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:10:01,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076673662] [2022-07-23 01:10:01,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076673662] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:10:01,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:10:01,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-23 01:10:01,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073244216] [2022-07-23 01:10:01,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:10:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 01:10:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:10:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 01:10:01,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-23 01:10:01,733 INFO L87 Difference]: Start difference. First operand 2853 states and 3970 transitions. Second operand has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:10:06,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:10:06,659 INFO L93 Difference]: Finished difference Result 5726 states and 7989 transitions. [2022-07-23 01:10:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-23 01:10:06,661 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 147 [2022-07-23 01:10:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:10:06,680 INFO L225 Difference]: With dead ends: 5726 [2022-07-23 01:10:06,680 INFO L226 Difference]: Without dead ends: 2887 [2022-07-23 01:10:06,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-07-23 01:10:06,693 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 26 mSDsluCounter, 4918 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5903 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-23 01:10:06,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5903 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-23 01:10:06,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2022-07-23 01:10:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2877. [2022-07-23 01:10:06,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2081 states have (on average 1.3258049014896685) internal successors, (2759), 2135 states have internal predecessors, (2759), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-23 01:10:06,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3994 transitions. [2022-07-23 01:10:06,838 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3994 transitions. Word has length 147 [2022-07-23 01:10:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:10:06,838 INFO L495 AbstractCegarLoop]: Abstraction has 2877 states and 3994 transitions. [2022-07-23 01:10:06,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.642857142857143) internal successors, (107), 14 states have internal predecessors, (107), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-23 01:10:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3994 transitions. [2022-07-23 01:10:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-23 01:10:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:10:06,845 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:10:06,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-07-23 01:10:07,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:10:07,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:10:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:10:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1148257020, now seen corresponding path program 2 times [2022-07-23 01:10:07,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:10:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79451936] [2022-07-23 01:10:07,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:10:07,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:10:07,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:10:07,066 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) [2022-07-23 01:10:07,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-23 01:10:09,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:10:09,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:10:09,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 3091 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:10:09,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:10:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-23 01:10:09,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:10:09,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:10:09,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79451936] [2022-07-23 01:10:09,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79451936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:10:09,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:10:09,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:10:09,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352467968] [2022-07-23 01:10:09,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:10:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:10:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:10:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:10:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:10:09,794 INFO L87 Difference]: Start difference. First operand 2877 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 01:10:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:10:10,043 INFO L93 Difference]: Finished difference Result 6273 states and 8767 transitions. [2022-07-23 01:10:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:10:10,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 153 [2022-07-23 01:10:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:10:10,069 INFO L225 Difference]: With dead ends: 6273 [2022-07-23 01:10:10,069 INFO L226 Difference]: Without dead ends: 3426 [2022-07-23 01:10:10,082 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 [2022-07-23 01:10:10,082 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 147 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 01:10:10,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2181 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 01:10:10,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3426 states. [2022-07-23 01:10:10,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3426 to 2889. [2022-07-23 01:10:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2889 states, 2093 states have (on average 1.3239369326325847) internal successors, (2771), 2147 states have internal predecessors, (2771), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-23 01:10:10,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2889 states to 2889 states and 4006 transitions. [2022-07-23 01:10:10,231 INFO L78 Accepts]: Start accepts. Automaton has 2889 states and 4006 transitions. Word has length 153 [2022-07-23 01:10:10,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:10:10,232 INFO L495 AbstractCegarLoop]: Abstraction has 2889 states and 4006 transitions. [2022-07-23 01:10:10,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-23 01:10:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand 2889 states and 4006 transitions. [2022-07-23 01:10:10,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-23 01:10:10,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:10:10,238 INFO L195 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:10:10,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-23 01:10:10,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:10:10,452 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:10:10,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:10:10,453 INFO L85 PathProgramCache]: Analyzing trace with hash -604240790, now seen corresponding path program 1 times [2022-07-23 01:10:10,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:10:10,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465462824] [2022-07-23 01:10:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:10:10,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:10:10,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:10:10,459 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) [2022-07-23 01:10:10,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-23 01:10:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:10:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 3771 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-23 01:10:14,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:10:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 67 proven. 55 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-23 01:10:18,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 01:10:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 57 proven. 55 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-23 01:10:27,491 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:10:27,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465462824] [2022-07-23 01:10:27,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465462824] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 01:10:27,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 01:10:27,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-23 01:10:27,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576948835] [2022-07-23 01:10:27,492 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 01:10:27,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-23 01:10:27,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:10:27,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-23 01:10:27,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-23 01:10:27,495 INFO L87 Difference]: Start difference. First operand 2889 states and 4006 transitions. Second operand has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-23 01:10:49,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:10:49,206 INFO L93 Difference]: Finished difference Result 5846 states and 8145 transitions. [2022-07-23 01:10:49,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-23 01:10:49,207 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2022-07-23 01:10:49,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:10:49,232 INFO L225 Difference]: With dead ends: 5846 [2022-07-23 01:10:49,232 INFO L226 Difference]: Without dead ends: 2971 [2022-07-23 01:10:49,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=635, Invalid=1171, Unknown=0, NotChecked=0, Total=1806 [2022-07-23 01:10:49,243 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 158 mSDsluCounter, 14805 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 15796 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:10:49,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 15796 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-23 01:10:49,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2022-07-23 01:10:49,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2937. [2022-07-23 01:10:49,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2141 states have (on average 1.3166744511910322) internal successors, (2819), 2195 states have internal predecessors, (2819), 605 states have call successors, (605), 189 states have call predecessors, (605), 190 states have return successors, (630), 604 states have call predecessors, (630), 602 states have call successors, (630) [2022-07-23 01:10:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 4054 transitions. [2022-07-23 01:10:49,375 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 4054 transitions. Word has length 169 [2022-07-23 01:10:49,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:10:49,376 INFO L495 AbstractCegarLoop]: Abstraction has 2937 states and 4054 transitions. [2022-07-23 01:10:49,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.269230769230769) internal successors, (137), 26 states have internal predecessors, (137), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-23 01:10:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 4054 transitions. [2022-07-23 01:10:49,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-23 01:10:49,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:10:49,389 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:10:49,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-23 01:10:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:10:49,603 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:10:49,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:10:49,604 INFO L85 PathProgramCache]: Analyzing trace with hash 731148714, now seen corresponding path program 2 times [2022-07-23 01:10:49,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:10:49,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936615656] [2022-07-23 01:10:49,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 01:10:49,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:10:49,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:10:49,610 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) [2022-07-23 01:10:49,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-23 01:10:52,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-23 01:10:52,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 01:10:52,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 3127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 01:10:52,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:10:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2022-07-23 01:10:52,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 01:10:52,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 01:10:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936615656] [2022-07-23 01:10:52,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936615656] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 01:10:52,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 01:10:52,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 01:10:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438789678] [2022-07-23 01:10:52,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 01:10:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 01:10:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 01:10:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 01:10:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:10:52,746 INFO L87 Difference]: Start difference. First operand 2937 states and 4054 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:10:54,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-23 01:10:55,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 01:10:55,225 INFO L93 Difference]: Finished difference Result 5846 states and 8078 transitions. [2022-07-23 01:10:55,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 01:10:55,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 181 [2022-07-23 01:10:55,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 01:10:55,238 INFO L225 Difference]: With dead ends: 5846 [2022-07-23 01:10:55,238 INFO L226 Difference]: Without dead ends: 2939 [2022-07-23 01:10:55,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 01:10:55,247 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 960 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 2867 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-23 01:10:55,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [960 Valid, 2867 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-23 01:10:55,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-23 01:10:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2934. [2022-07-23 01:10:55,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2139 states have (on average 1.3151005142589995) internal successors, (2813), 2193 states have internal predecessors, (2813), 604 states have call successors, (604), 188 states have call predecessors, (604), 190 states have return successors, (628), 604 states have call predecessors, (628), 600 states have call successors, (628) [2022-07-23 01:10:55,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4045 transitions. [2022-07-23 01:10:55,358 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4045 transitions. Word has length 181 [2022-07-23 01:10:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 01:10:55,359 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4045 transitions. [2022-07-23 01:10:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-23 01:10:55,359 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4045 transitions. [2022-07-23 01:10:55,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-07-23 01:10:55,364 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 01:10:55,365 INFO L195 NwaCegarLoop]: trace histogram [26, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 01:10:55,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-23 01:10:55,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 01:10:55,580 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 01:10:55,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 01:10:55,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1008632914, now seen corresponding path program 1 times [2022-07-23 01:10:55,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 01:10:55,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372654713] [2022-07-23 01:10:55,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 01:10:55,587 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 01:10:55,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 01:10:55,589 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) [2022-07-23 01:10:55,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-23 01:10:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 01:10:59,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 3911 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-23 01:10:59,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 01:11:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 127 proven. 253 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-23 01:11:13,700 INFO L328 TraceCheckSpWp]: Computing backward predicates...