./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:07:03,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:07:03,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:07:03,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:07:03,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:07:03,095 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:07:03,098 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:07:03,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:07:03,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:07:03,106 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:07:03,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:07:03,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:07:03,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:07:03,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:07:03,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:07:03,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:07:03,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:07:03,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:07:03,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:07:03,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:07:03,122 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:07:03,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:07:03,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:07:03,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:07:03,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:07:03,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:07:03,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:07:03,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:07:03,131 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:07:03,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:07:03,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:07:03,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:07:03,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:07:03,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:07:03,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:07:03,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:07:03,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:07:03,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:07:03,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:07:03,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:07:03,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:07:03,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:07:03,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 00:07:03,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:07:03,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:07:03,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:07:03,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:07:03,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:07:03,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:07:03,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:07:03,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:07:03,164 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:07:03,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:07:03,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 00:07:03,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:07:03,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:07:03,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:07:03,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:07:03,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:07:03,166 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:07:03,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:07:03,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:07:03,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:07:03,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:07:03,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:07:03,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:07:03,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:07:03,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:07:03,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 00:07:03,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 00:07:03,169 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:07:03,169 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:07:03,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:07:03,169 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-14 00:07:03,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:07:03,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:07:03,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:07:03,341 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:07:03,342 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:07:03,343 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 00:07:03,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c300e3592/99717aed6c0b4c6da74f745a29f03ae8/FLAG6b3061e96 [2022-07-14 00:07:04,056 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:07:04,056 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 00:07:04,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c300e3592/99717aed6c0b4c6da74f745a29f03ae8/FLAG6b3061e96 [2022-07-14 00:07:04,430 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c300e3592/99717aed6c0b4c6da74f745a29f03ae8 [2022-07-14 00:07:04,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:07:04,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:07:04,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:07:04,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:07:04,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:07:04,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:07:04" (1/1) ... [2022-07-14 00:07:04,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c67ab50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:04, skipping insertion in model container [2022-07-14 00:07:04,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:07:04" (1/1) ... [2022-07-14 00:07:04,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:07:04,515 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:07:05,047 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-14 00:07:05,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:07:05,440 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:07:05,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-14 00:07:05,614 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) [2022-07-14 00:07:05,618 INFO L158 Benchmark]: Toolchain (without parser) took 1183.79ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 97.5MB in the beginning and 138.9MB in the end (delta: -41.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-07-14 00:07:05,620 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 00:07:05,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1182.51ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 97.5MB in the beginning and 138.9MB in the end (delta: -41.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. [2022-07-14 00:07:05,622 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 130.0MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1182.51ms. Allocated memory was 130.0MB in the beginning and 190.8MB in the end (delta: 60.8MB). Free memory was 97.5MB in the beginning and 138.9MB in the end (delta: -41.5MB). Peak memory consumption was 71.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 00:07:07,394 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 00:07:07,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 00:07:07,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 00:07:07,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 00:07:07,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 00:07:07,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 00:07:07,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 00:07:07,434 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 00:07:07,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 00:07:07,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 00:07:07,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 00:07:07,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 00:07:07,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 00:07:07,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 00:07:07,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 00:07:07,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 00:07:07,447 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 00:07:07,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 00:07:07,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 00:07:07,453 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 00:07:07,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 00:07:07,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 00:07:07,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 00:07:07,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 00:07:07,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 00:07:07,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 00:07:07,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 00:07:07,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 00:07:07,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 00:07:07,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 00:07:07,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 00:07:07,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 00:07:07,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 00:07:07,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 00:07:07,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 00:07:07,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 00:07:07,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 00:07:07,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 00:07:07,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 00:07:07,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 00:07:07,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 00:07:07,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 00:07:07,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 00:07:07,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 00:07:07,499 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 00:07:07,499 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 00:07:07,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 00:07:07,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 00:07:07,500 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 00:07:07,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 00:07:07,501 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 00:07:07,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 00:07:07,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 00:07:07,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 00:07:07,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 00:07:07,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 00:07:07,509 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 00:07:07,509 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 00:07:07,509 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 00:07:07,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 00:07:07,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:07:07,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 00:07:07,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 00:07:07,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 00:07:07,511 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 00:07:07,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 00:07:07,511 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 00:07:07,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 00:07:07,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 00:07:07,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 00:07:07,512 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-14 00:07:07,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 00:07:07,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 00:07:07,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 00:07:07,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 00:07:07,872 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 00:07:07,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 00:07:07,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fb2c4e2/b7bbbbc595f645c49155c99cce652f0f/FLAGfaae60499 [2022-07-14 00:07:08,465 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 00:07:08,466 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 00:07:08,521 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fb2c4e2/b7bbbbc595f645c49155c99cce652f0f/FLAGfaae60499 [2022-07-14 00:07:08,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77fb2c4e2/b7bbbbc595f645c49155c99cce652f0f [2022-07-14 00:07:08,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 00:07:08,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 00:07:08,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 00:07:08,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 00:07:08,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 00:07:08,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:07:08" (1/1) ... [2022-07-14 00:07:08,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fdea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:08, skipping insertion in model container [2022-07-14 00:07:08,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 12:07:08" (1/1) ... [2022-07-14 00:07:08,680 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 00:07:08,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:07:09,459 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-14 00:07:09,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:07:09,839 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 00:07:09,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 00:07:09,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-14 00:07:10,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:07:10,084 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 00:07:10,188 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-14 00:07:10,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 00:07:10,325 INFO L208 MainTranslator]: Completed translation [2022-07-14 00:07:10,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10 WrapperNode [2022-07-14 00:07:10,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 00:07:10,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 00:07:10,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 00:07:10,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 00:07:10,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,481 INFO L137 Inliner]: procedures = 198, calls = 1615, calls flagged for inlining = 84, calls inlined = 65, statements flattened = 2837 [2022-07-14 00:07:10,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 00:07:10,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 00:07:10,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 00:07:10,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 00:07:10,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,653 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 00:07:10,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 00:07:10,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 00:07:10,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 00:07:10,674 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (1/1) ... [2022-07-14 00:07:10,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 00:07:10,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 00:07:10,694 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) [2022-07-14 00:07:10,701 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 [2022-07-14 00:07:10,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 00:07:10,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 00:07:10,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 00:07:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-14 00:07:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-14 00:07:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-14 00:07:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-14 00:07:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-14 00:07:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-14 00:07:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 00:07:10,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 00:07:10,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-14 00:07:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-14 00:07:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2022-07-14 00:07:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2022-07-14 00:07:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2022-07-14 00:07:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2022-07-14 00:07:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 00:07:10,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 00:07:10,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 00:07:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 00:07:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 00:07:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 00:07:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-14 00:07:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-14 00:07:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-14 00:07:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-14 00:07:10,724 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 00:07:10,724 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-14 00:07:10,725 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-14 00:07:10,725 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-14 00:07:10,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2022-07-14 00:07:10,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 00:07:10,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-14 00:07:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-14 00:07:10,727 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-14 00:07:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-14 00:07:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-14 00:07:10,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-14 00:07:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-14 00:07:10,727 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-14 00:07:10,727 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-14 00:07:10,727 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-14 00:07:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-14 00:07:10,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-14 00:07:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-14 00:07:10,728 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-14 00:07:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 00:07:10,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 00:07:10,728 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-14 00:07:10,728 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-14 00:07:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2022-07-14 00:07:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2022-07-14 00:07:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-07-14 00:07:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-07-14 00:07:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-14 00:07:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-14 00:07:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 00:07:10,729 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 00:07:10,729 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 00:07:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 00:07:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-14 00:07:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-14 00:07:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-14 00:07:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-14 00:07:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-14 00:07:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-14 00:07:10,730 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-14 00:07:10,730 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-14 00:07:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 00:07:10,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 00:07:10,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2022-07-14 00:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-14 00:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-14 00:07:10,732 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-14 00:07:10,732 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-14 00:07:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-14 00:07:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-14 00:07:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-14 00:07:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-14 00:07:10,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-14 00:07:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 00:07:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 00:07:10,733 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2022-07-14 00:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2022-07-14 00:07:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 00:07:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 00:07:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 00:07:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-14 00:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-14 00:07:10,734 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-14 00:07:10,734 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-14 00:07:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-14 00:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-14 00:07:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-14 00:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-14 00:07:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-14 00:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-14 00:07:10,735 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-14 00:07:10,735 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-14 00:07:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-14 00:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-14 00:07:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-14 00:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-14 00:07:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-14 00:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-14 00:07:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 00:07:10,736 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-14 00:07:10,736 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-14 00:07:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-14 00:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-14 00:07:10,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 00:07:10,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 00:07:11,084 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 00:07:11,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 00:07:11,525 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 00:07:16,133 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-14 00:07:48,707 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 00:07:48,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 00:07:48,724 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-14 00:07:48,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:07:48 BoogieIcfgContainer [2022-07-14 00:07:48,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 00:07:48,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 00:07:48,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 00:07:48,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 00:07:48,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 12:07:08" (1/3) ... [2022-07-14 00:07:48,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba30da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:07:48, skipping insertion in model container [2022-07-14 00:07:48,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 12:07:10" (2/3) ... [2022-07-14 00:07:48,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ba30da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 12:07:48, skipping insertion in model container [2022-07-14 00:07:48,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 12:07:48" (3/3) ... [2022-07-14 00:07:48,733 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-14 00:07:48,742 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 00:07:48,742 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 00:07:48,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 00:07:48,807 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@8343aac, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d7ae11 [2022-07-14 00:07:48,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 00:07:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) [2022-07-14 00:07:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-14 00:07:48,826 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:48,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:48,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:48,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:48,832 INFO L85 PathProgramCache]: Analyzing trace with hash -753531349, now seen corresponding path program 1 times [2022-07-14 00:07:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:07:48,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063258032] [2022-07-14 00:07:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:48,846 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:07:48,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:07:48,858 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) [2022-07-14 00:07:48,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-14 00:07:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:49,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:07:49,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:50,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:07:50,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:07:50,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:07:50,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063258032] [2022-07-14 00:07:50,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063258032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:50,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:07:50,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 00:07:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569818566] [2022-07-14 00:07:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 00:07:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:07:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 00:07:50,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 00:07:50,277 INFO L87 Difference]: Start difference. First operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:07:50,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:50,591 INFO L93 Difference]: Finished difference Result 1670 states and 2383 transitions. [2022-07-14 00:07:50,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-14 00:07:50,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-14 00:07:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:50,612 INFO L225 Difference]: With dead ends: 1670 [2022-07-14 00:07:50,612 INFO L226 Difference]: Without dead ends: 824 [2022-07-14 00:07:50,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:07:50,626 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 2 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:50,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3478 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:07:50,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-14 00:07:50,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2022-07-14 00:07:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 605 states have internal predecessors, (782), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-14 00:07:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1147 transitions. [2022-07-14 00:07:50,714 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1147 transitions. Word has length 28 [2022-07-14 00:07:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1147 transitions. [2022-07-14 00:07:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:07:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1147 transitions. [2022-07-14 00:07:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-14 00:07:50,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:50,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:50,755 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-14 00:07:50,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:07:50,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:50,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:50,949 INFO L85 PathProgramCache]: Analyzing trace with hash 65775979, now seen corresponding path program 1 times [2022-07-14 00:07:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:07:50,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183450945] [2022-07-14 00:07:50,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:50,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:07:50,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:07:50,958 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) [2022-07-14 00:07:50,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-14 00:07:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:52,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 00:07:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:52,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:07:52,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:07:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-14 00:07:53,179 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:07:53,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183450945] [2022-07-14 00:07:53,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183450945] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:07:53,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:07:53,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-14 00:07:53,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799148415] [2022-07-14 00:07:53,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:07:53,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 00:07:53,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:07:53,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 00:07:53,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 00:07:53,183 INFO L87 Difference]: Start difference. First operand 824 states and 1147 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:07:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:53,962 INFO L93 Difference]: Finished difference Result 1644 states and 2291 transitions. [2022-07-14 00:07:53,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 00:07:53,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-14 00:07:53,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:53,967 INFO L225 Difference]: With dead ends: 1644 [2022-07-14 00:07:53,967 INFO L226 Difference]: Without dead ends: 827 [2022-07-14 00:07:53,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-14 00:07:53,970 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 11 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:53,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4574 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:07:53,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-07-14 00:07:53,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-07-14 00:07:53,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 589 states have (on average 1.33276740237691) internal successors, (785), 608 states have internal predecessors, (785), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-14 00:07:53,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1150 transitions. [2022-07-14 00:07:53,994 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1150 transitions. Word has length 29 [2022-07-14 00:07:53,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:53,994 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1150 transitions. [2022-07-14 00:07:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:07:53,995 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1150 transitions. [2022-07-14 00:07:53,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-14 00:07:53,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:53,996 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:54,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-14 00:07:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:07:54,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 755291691, now seen corresponding path program 2 times [2022-07-14 00:07:54,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:07:54,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227257035] [2022-07-14 00:07:54,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 00:07:54,223 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:07:54,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:07:54,224 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) [2022-07-14 00:07:54,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-14 00:07:55,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 00:07:55,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 00:07:55,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:07:55,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-14 00:07:55,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:07:55,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:07:55,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227257035] [2022-07-14 00:07:55,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227257035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:55,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:07:55,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:07:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83512289] [2022-07-14 00:07:55,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:55,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:07:55,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:07:55,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:07:55,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:07:55,587 INFO L87 Difference]: Start difference. First operand 827 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:07:57,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:07:58,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:07:58,246 INFO L93 Difference]: Finished difference Result 2428 states and 3388 transitions. [2022-07-14 00:07:58,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:07:58,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-14 00:07:58,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:07:58,255 INFO L225 Difference]: With dead ends: 2428 [2022-07-14 00:07:58,256 INFO L226 Difference]: Without dead ends: 1616 [2022-07-14 00:07:58,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:07:58,266 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 1104 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 00:07:58,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2459 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 00:07:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-14 00:07:58,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2022-07-14 00:07:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3330434782608696) internal successors, (1533), 1184 states have internal predecessors, (1533), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-14 00:07:58,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2252 transitions. [2022-07-14 00:07:58,347 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2252 transitions. Word has length 32 [2022-07-14 00:07:58,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:07:58,348 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2252 transitions. [2022-07-14 00:07:58,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-14 00:07:58,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2252 transitions. [2022-07-14 00:07:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 00:07:58,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:07:58,353 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:07:58,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-14 00:07:58,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:07:58,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:07:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:07:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash -398706385, now seen corresponding path program 1 times [2022-07-14 00:07:58,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:07:58,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839770552] [2022-07-14 00:07:58,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:07:58,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:07:58,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:07:58,581 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) [2022-07-14 00:07:58,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-14 00:07:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:07:59,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:07:59,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:07:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:07:59,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:07:59,832 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:07:59,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839770552] [2022-07-14 00:07:59,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839770552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:07:59,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:07:59,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:07:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330622533] [2022-07-14 00:07:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:07:59,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:07:59,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:07:59,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:07:59,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:07:59,834 INFO L87 Difference]: Start difference. First operand 1616 states and 2252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:00,100 INFO L93 Difference]: Finished difference Result 1642 states and 2284 transitions. [2022-07-14 00:08:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-14 00:08:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:00,107 INFO L225 Difference]: With dead ends: 1642 [2022-07-14 00:08:00,107 INFO L226 Difference]: Without dead ends: 1629 [2022-07-14 00:08:00,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:00,108 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1141 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:00,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 00:08:00,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-14 00:08:00,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1616. [2022-07-14 00:08:00,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3321739130434782) internal successors, (1532), 1184 states have internal predecessors, (1532), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-14 00:08:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2251 transitions. [2022-07-14 00:08:00,160 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2251 transitions. Word has length 42 [2022-07-14 00:08:00,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:00,161 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2251 transitions. [2022-07-14 00:08:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2251 transitions. [2022-07-14 00:08:00,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-14 00:08:00,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:00,165 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:00,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:00,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:00,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:00,380 INFO L85 PathProgramCache]: Analyzing trace with hash -341448083, now seen corresponding path program 1 times [2022-07-14 00:08:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:00,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057511740] [2022-07-14 00:08:00,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:00,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:00,386 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) [2022-07-14 00:08:00,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-14 00:08:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:01,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:08:01,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:08:04,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:04,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:04,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057511740] [2022-07-14 00:08:04,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057511740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:04,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:04,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 00:08:04,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409255403] [2022-07-14 00:08:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:04,144 INFO L87 Difference]: Start difference. First operand 1616 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:04,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:04,527 INFO L93 Difference]: Finished difference Result 4803 states and 6768 transitions. [2022-07-14 00:08:04,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:04,529 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-14 00:08:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:04,547 INFO L225 Difference]: With dead ends: 4803 [2022-07-14 00:08:04,547 INFO L226 Difference]: Without dead ends: 3209 [2022-07-14 00:08:04,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:04,553 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1118 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:04,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 2601 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 00:08:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-07-14 00:08:04,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3199. [2022-07-14 00:08:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2278 states have (on average 1.3318700614574188) internal successors, (3034), 2342 states have internal predecessors, (3034), 716 states have call successors, (716), 205 states have call predecessors, (716), 204 states have return successors, (745), 699 states have call predecessors, (745), 711 states have call successors, (745) [2022-07-14 00:08:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4495 transitions. [2022-07-14 00:08:04,652 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4495 transitions. Word has length 42 [2022-07-14 00:08:04,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:04,652 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 4495 transitions. [2022-07-14 00:08:04,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4495 transitions. [2022-07-14 00:08:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-14 00:08:04,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:04,653 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:04,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:04,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:04,872 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1995368413, now seen corresponding path program 1 times [2022-07-14 00:08:04,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:04,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602226658] [2022-07-14 00:08:04,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:04,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:04,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:04,877 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) [2022-07-14 00:08:04,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-14 00:08:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:05,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:08:05,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:08:08,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:08,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:08,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602226658] [2022-07-14 00:08:08,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602226658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:08,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:08,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 00:08:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952440088] [2022-07-14 00:08:08,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:08,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:08,681 INFO L87 Difference]: Start difference. First operand 3199 states and 4495 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:09,249 INFO L93 Difference]: Finished difference Result 9544 states and 13706 transitions. [2022-07-14 00:08:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:09,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-07-14 00:08:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:09,283 INFO L225 Difference]: With dead ends: 9544 [2022-07-14 00:08:09,283 INFO L226 Difference]: Without dead ends: 6367 [2022-07-14 00:08:09,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:09,300 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1120 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:09,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2545 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 00:08:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-14 00:08:09,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6358. [2022-07-14 00:08:09,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4527 states have (on average 1.3293571901921803) internal successors, (6018), 4651 states have internal predecessors, (6018), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-14 00:08:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9033 transitions. [2022-07-14 00:08:09,490 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9033 transitions. Word has length 43 [2022-07-14 00:08:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:09,491 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9033 transitions. [2022-07-14 00:08:09,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:09,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9033 transitions. [2022-07-14 00:08:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-14 00:08:09,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:09,493 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:09,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:09,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:09,719 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1727286224, now seen corresponding path program 1 times [2022-07-14 00:08:09,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:09,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489408155] [2022-07-14 00:08:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:09,724 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) [2022-07-14 00:08:09,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-14 00:08:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:10,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:10,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:08:12,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:12,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:12,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489408155] [2022-07-14 00:08:12,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489408155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:12,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:12,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 00:08:12,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363109437] [2022-07-14 00:08:12,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:12,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:12,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:12,280 INFO L87 Difference]: Start difference. First operand 6358 states and 9033 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:12,513 INFO L93 Difference]: Finished difference Result 6365 states and 9039 transitions. [2022-07-14 00:08:12,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-07-14 00:08:12,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:12,546 INFO L225 Difference]: With dead ends: 6365 [2022-07-14 00:08:12,547 INFO L226 Difference]: Without dead ends: 6362 [2022-07-14 00:08:12,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:12,553 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1117 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:12,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 00:08:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2022-07-14 00:08:12,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 6359. [2022-07-14 00:08:12,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 4528 states have (on average 1.3292844522968197) internal successors, (6019), 4652 states have internal predecessors, (6019), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-14 00:08:12,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9034 transitions. [2022-07-14 00:08:12,836 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9034 transitions. Word has length 44 [2022-07-14 00:08:12,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:12,837 INFO L495 AbstractCegarLoop]: Abstraction has 6359 states and 9034 transitions. [2022-07-14 00:08:12,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:12,838 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9034 transitions. [2022-07-14 00:08:12,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-14 00:08:12,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:12,839 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:12,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:13,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:13,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:13,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:13,052 INFO L85 PathProgramCache]: Analyzing trace with hash -2006668090, now seen corresponding path program 1 times [2022-07-14 00:08:13,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:13,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750827554] [2022-07-14 00:08:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:13,055 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:13,056 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) [2022-07-14 00:08:13,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-14 00:08:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:14,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:14,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:15,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:08:15,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:15,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750827554] [2022-07-14 00:08:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750827554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:15,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:15,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 00:08:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989500328] [2022-07-14 00:08:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:15,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:15,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:15,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:15,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:15,711 INFO L87 Difference]: Start difference. First operand 6359 states and 9034 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:15,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:15,838 INFO L93 Difference]: Finished difference Result 6361 states and 9035 transitions. [2022-07-14 00:08:15,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:15,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-14 00:08:15,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:15,880 INFO L225 Difference]: With dead ends: 6361 [2022-07-14 00:08:15,881 INFO L226 Difference]: Without dead ends: 6358 [2022-07-14 00:08:15,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:15,885 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:15,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1143 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:08:15,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2022-07-14 00:08:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2022-07-14 00:08:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4528 states have (on average 1.3290636042402826) internal successors, (6018), 4651 states have internal predecessors, (6018), 1423 states have call successors, (1423), 407 states have call predecessors, (1423), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-14 00:08:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9032 transitions. [2022-07-14 00:08:16,088 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9032 transitions. Word has length 45 [2022-07-14 00:08:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:16,088 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9032 transitions. [2022-07-14 00:08:16,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9032 transitions. [2022-07-14 00:08:16,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-14 00:08:16,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:16,089 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:16,144 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-14 00:08:16,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:16,303 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:16,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2077566477, now seen corresponding path program 1 times [2022-07-14 00:08:16,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:16,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71169950] [2022-07-14 00:08:16,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:16,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:16,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:16,307 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) [2022-07-14 00:08:16,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-14 00:08:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:17,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:17,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-14 00:08:18,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:18,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:18,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71169950] [2022-07-14 00:08:18,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71169950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:18,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:18,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 00:08:18,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219518220] [2022-07-14 00:08:18,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:18,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:18,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:18,923 INFO L87 Difference]: Start difference. First operand 6358 states and 9032 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:19,017 INFO L93 Difference]: Finished difference Result 6360 states and 9033 transitions. [2022-07-14 00:08:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-07-14 00:08:19,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:19,039 INFO L225 Difference]: With dead ends: 6360 [2022-07-14 00:08:19,039 INFO L226 Difference]: Without dead ends: 6348 [2022-07-14 00:08:19,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:19,045 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:19,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 00:08:19,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2022-07-14 00:08:19,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6348. [2022-07-14 00:08:19,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 4519 states have (on average 1.3288338127904404) internal successors, (6005), 4641 states have internal predecessors, (6005), 1422 states have call successors, (1422), 407 states have call predecessors, (1422), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-14 00:08:19,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9018 transitions. [2022-07-14 00:08:19,232 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9018 transitions. Word has length 46 [2022-07-14 00:08:19,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:19,233 INFO L495 AbstractCegarLoop]: Abstraction has 6348 states and 9018 transitions. [2022-07-14 00:08:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-14 00:08:19,233 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9018 transitions. [2022-07-14 00:08:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-14 00:08:19,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:19,243 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:19,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:19,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:19,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:19,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:19,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1227308281, now seen corresponding path program 1 times [2022-07-14 00:08:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:19,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242610985] [2022-07-14 00:08:19,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:19,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:19,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:19,463 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) [2022-07-14 00:08:19,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-14 00:08:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:20,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:20,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:21,005 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 00:08:21,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:21,005 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:21,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242610985] [2022-07-14 00:08:21,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242610985] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:21,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:21,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:08:21,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026242344] [2022-07-14 00:08:21,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:21,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:21,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:21,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:21,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:21,006 INFO L87 Difference]: Start difference. First operand 6348 states and 9018 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 00:08:21,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:21,734 INFO L93 Difference]: Finished difference Result 12802 states and 18190 transitions. [2022-07-14 00:08:21,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:21,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-14 00:08:21,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:21,762 INFO L225 Difference]: With dead ends: 12802 [2022-07-14 00:08:21,762 INFO L226 Difference]: Without dead ends: 6476 [2022-07-14 00:08:21,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:21,782 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 52 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:21,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:08:21,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2022-07-14 00:08:21,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 6452. [2022-07-14 00:08:21,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 4622 states have (on average 1.3308091735179577) internal successors, (6151), 4744 states have internal predecessors, (6151), 1422 states have call successors, (1422), 408 states have call predecessors, (1422), 407 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-14 00:08:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 9164 transitions. [2022-07-14 00:08:21,988 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 9164 transitions. Word has length 144 [2022-07-14 00:08:21,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:21,989 INFO L495 AbstractCegarLoop]: Abstraction has 6452 states and 9164 transitions. [2022-07-14 00:08:21,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-14 00:08:21,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 9164 transitions. [2022-07-14 00:08:21,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-14 00:08:21,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:21,994 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:22,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:22,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:22,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:22,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:22,224 INFO L85 PathProgramCache]: Analyzing trace with hash -481170855, now seen corresponding path program 1 times [2022-07-14 00:08:22,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:22,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629178158] [2022-07-14 00:08:22,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:22,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:22,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:22,236 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) [2022-07-14 00:08:22,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-14 00:08:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:23,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:23,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:24,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-14 00:08:24,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:24,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:24,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629178158] [2022-07-14 00:08:24,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629178158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:24,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:24,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:08:24,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427196120] [2022-07-14 00:08:24,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:24,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:24,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:24,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:24,329 INFO L87 Difference]: Start difference. First operand 6452 states and 9164 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-14 00:08:26,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:08:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:27,534 INFO L93 Difference]: Finished difference Result 13274 states and 18828 transitions. [2022-07-14 00:08:27,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:27,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-07-14 00:08:27,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:27,559 INFO L225 Difference]: With dead ends: 13274 [2022-07-14 00:08:27,560 INFO L226 Difference]: Without dead ends: 6848 [2022-07-14 00:08:27,581 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 [2022-07-14 00:08:27,582 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 208 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:27,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 00:08:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2022-07-14 00:08:27,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 6824. [2022-07-14 00:08:27,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 4946 states have (on average 1.3275374039627983) internal successors, (6566), 5068 states have internal predecessors, (6566), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 439 states have return successors, (1607), 1411 states have call predecessors, (1607), 1435 states have call successors, (1607) [2022-07-14 00:08:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9611 transitions. [2022-07-14 00:08:27,891 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9611 transitions. Word has length 153 [2022-07-14 00:08:27,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:27,891 INFO L495 AbstractCegarLoop]: Abstraction has 6824 states and 9611 transitions. [2022-07-14 00:08:27,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-14 00:08:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9611 transitions. [2022-07-14 00:08:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-14 00:08:27,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:27,895 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:27,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:28,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:28,116 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:28,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:28,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1461989513, now seen corresponding path program 1 times [2022-07-14 00:08:28,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [149043211] [2022-07-14 00:08:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:28,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:28,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:28,121 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) [2022-07-14 00:08:28,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-14 00:08:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:29,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 00:08:29,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-14 00:08:30,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:30,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:30,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [149043211] [2022-07-14 00:08:30,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [149043211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:30,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:30,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 00:08:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134362257] [2022-07-14 00:08:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:30,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 00:08:30,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:30,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 00:08:30,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:30,660 INFO L87 Difference]: Start difference. First operand 6824 states and 9611 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:08:31,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:31,220 INFO L93 Difference]: Finished difference Result 13686 states and 19630 transitions. [2022-07-14 00:08:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:08:31,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-07-14 00:08:31,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:31,241 INFO L225 Difference]: With dead ends: 13686 [2022-07-14 00:08:31,241 INFO L226 Difference]: Without dead ends: 6856 [2022-07-14 00:08:31,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 00:08:31,267 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 0 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:31,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4540 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 00:08:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2022-07-14 00:08:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6856. [2022-07-14 00:08:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 4962 states have (on average 1.3264812575574365) internal successors, (6582), 5100 states have internal predecessors, (6582), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1411 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-14 00:08:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 9699 transitions. [2022-07-14 00:08:31,437 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 9699 transitions. Word has length 160 [2022-07-14 00:08:31,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:31,438 INFO L495 AbstractCegarLoop]: Abstraction has 6856 states and 9699 transitions. [2022-07-14 00:08:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 00:08:31,438 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 9699 transitions. [2022-07-14 00:08:31,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-14 00:08:31,444 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:31,444 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:31,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:31,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:31,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -443990667, now seen corresponding path program 1 times [2022-07-14 00:08:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:31,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293181151] [2022-07-14 00:08:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:31,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:31,676 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) [2022-07-14 00:08:31,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-14 00:08:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:33,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 00:08:33,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-14 00:08:34,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:34,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:34,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293181151] [2022-07-14 00:08:34,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293181151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:34,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:34,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:08:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439383485] [2022-07-14 00:08:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:08:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:08:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:08:34,640 INFO L87 Difference]: Start difference. First operand 6856 states and 9699 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:08:37,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:08:39,527 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 [] [2022-07-14 00:08:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:39,841 INFO L93 Difference]: Finished difference Result 14422 states and 20512 transitions. [2022-07-14 00:08:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:08:39,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2022-07-14 00:08:39,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:39,882 INFO L225 Difference]: With dead ends: 14422 [2022-07-14 00:08:39,882 INFO L226 Difference]: Without dead ends: 7592 [2022-07-14 00:08:39,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:08:39,904 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 158 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:39,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 5891 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-07-14 00:08:39,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-07-14 00:08:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6880. [2022-07-14 00:08:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6880 states, 4986 states have (on average 1.3249097472924187) internal successors, (6606), 5116 states have internal predecessors, (6606), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-14 00:08:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6880 states to 6880 states and 9723 transitions. [2022-07-14 00:08:40,149 INFO L78 Accepts]: Start accepts. Automaton has 6880 states and 9723 transitions. Word has length 172 [2022-07-14 00:08:40,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:40,150 INFO L495 AbstractCegarLoop]: Abstraction has 6880 states and 9723 transitions. [2022-07-14 00:08:40,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:08:40,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states and 9723 transitions. [2022-07-14 00:08:40,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-14 00:08:40,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:40,154 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:40,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:40,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:40,379 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:40,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:40,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1808771924, now seen corresponding path program 1 times [2022-07-14 00:08:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:40,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837991182] [2022-07-14 00:08:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:40,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:40,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:40,391 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) [2022-07-14 00:08:40,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-14 00:08:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:42,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:42,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 00:08:42,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:42,757 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:42,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837991182] [2022-07-14 00:08:42,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837991182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:42,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:42,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:08:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853935783] [2022-07-14 00:08:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:42,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:42,758 INFO L87 Difference]: Start difference. First operand 6880 states and 9723 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:08:44,879 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 [] [2022-07-14 00:08:45,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:45,175 INFO L93 Difference]: Finished difference Result 14822 states and 21076 transitions. [2022-07-14 00:08:45,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:45,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2022-07-14 00:08:45,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:45,205 INFO L225 Difference]: With dead ends: 14822 [2022-07-14 00:08:45,205 INFO L226 Difference]: Without dead ends: 7968 [2022-07-14 00:08:45,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:45,222 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 134 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:45,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-14 00:08:45,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-14 00:08:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7056. [2022-07-14 00:08:45,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 5162 states have (on average 1.32932971716389) internal successors, (6862), 5292 states have internal predecessors, (6862), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-14 00:08:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 9979 transitions. [2022-07-14 00:08:45,418 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 9979 transitions. Word has length 178 [2022-07-14 00:08:45,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:45,419 INFO L495 AbstractCegarLoop]: Abstraction has 7056 states and 9979 transitions. [2022-07-14 00:08:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-14 00:08:45,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 9979 transitions. [2022-07-14 00:08:45,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-14 00:08:45,424 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:45,424 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:45,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:45,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:45,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415916, now seen corresponding path program 1 times [2022-07-14 00:08:45,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:45,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671535268] [2022-07-14 00:08:45,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:45,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:45,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:45,650 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) [2022-07-14 00:08:45,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-14 00:08:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:48,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 00:08:48,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:48,177 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:08:48,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:48,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:48,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671535268] [2022-07-14 00:08:48,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671535268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:48,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:48,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 00:08:48,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606615577] [2022-07-14 00:08:48,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:48,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 00:08:48,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:48,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 00:08:48,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:48,179 INFO L87 Difference]: Start difference. First operand 7056 states and 9979 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:48,547 INFO L93 Difference]: Finished difference Result 14134 states and 20010 transitions. [2022-07-14 00:08:48,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 00:08:48,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 182 [2022-07-14 00:08:48,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:48,570 INFO L225 Difference]: With dead ends: 14134 [2022-07-14 00:08:48,570 INFO L226 Difference]: Without dead ends: 7104 [2022-07-14 00:08:48,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 00:08:48,586 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 5 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:48,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 00:08:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2022-07-14 00:08:48,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 7088. [2022-07-14 00:08:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7088 states, 5194 states have (on average 1.3288409703504043) internal successors, (6902), 5324 states have internal predecessors, (6902), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-14 00:08:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 10019 transitions. [2022-07-14 00:08:48,963 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 10019 transitions. Word has length 182 [2022-07-14 00:08:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:48,965 INFO L495 AbstractCegarLoop]: Abstraction has 7088 states and 10019 transitions. [2022-07-14 00:08:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 10019 transitions. [2022-07-14 00:08:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-14 00:08:48,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:48,977 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:49,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:49,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:49,202 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -112961876, now seen corresponding path program 1 times [2022-07-14 00:08:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:49,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812266072] [2022-07-14 00:08:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:49,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:49,224 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) [2022-07-14 00:08:49,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-14 00:08:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:51,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 00:08:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:52,481 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:08:52,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:08:52,481 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:52,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812266072] [2022-07-14 00:08:52,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812266072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:08:52,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:08:52,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:08:52,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591609151] [2022-07-14 00:08:52,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:08:52,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:08:52,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:08:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:08:52,482 INFO L87 Difference]: Start difference. First operand 7088 states and 10019 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:53,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:53,673 INFO L93 Difference]: Finished difference Result 15614 states and 22184 transitions. [2022-07-14 00:08:53,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 00:08:53,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2022-07-14 00:08:53,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:53,700 INFO L225 Difference]: With dead ends: 15614 [2022-07-14 00:08:53,701 INFO L226 Difference]: Without dead ends: 8552 [2022-07-14 00:08:53,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 00:08:53,717 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 154 mSDsluCounter, 5081 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:53,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 6394 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-14 00:08:53,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2022-07-14 00:08:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 7120. [2022-07-14 00:08:53,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 5218 states have (on average 1.3273284783441932) internal successors, (6926), 5348 states have internal predecessors, (6926), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-14 00:08:53,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 10051 transitions. [2022-07-14 00:08:53,962 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 10051 transitions. Word has length 184 [2022-07-14 00:08:53,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:53,962 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 10051 transitions. [2022-07-14 00:08:53,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 10051 transitions. [2022-07-14 00:08:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-14 00:08:53,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:53,968 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:54,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:54,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:54,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 415048615, now seen corresponding path program 1 times [2022-07-14 00:08:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961470425] [2022-07-14 00:08:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:54,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:54,211 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) [2022-07-14 00:08:54,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-14 00:08:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:08:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 00:08:56,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:08:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:08:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:08:57,666 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:08:57,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:08:57,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961470425] [2022-07-14 00:08:57,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961470425] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:08:57,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:08:57,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-14 00:08:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607171713] [2022-07-14 00:08:57,667 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:08:57,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:08:57,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:08:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:08:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:08:57,668 INFO L87 Difference]: Start difference. First operand 7120 states and 10051 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:58,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:08:58,336 INFO L93 Difference]: Finished difference Result 14294 states and 20202 transitions. [2022-07-14 00:08:58,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 00:08:58,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-07-14 00:08:58,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:08:58,355 INFO L225 Difference]: With dead ends: 14294 [2022-07-14 00:08:58,355 INFO L226 Difference]: Without dead ends: 7200 [2022-07-14 00:08:58,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:08:58,371 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 29 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 00:08:58,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3410 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 00:08:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-07-14 00:08:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7160. [2022-07-14 00:08:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 5258 states have (on average 1.3263598326359833) internal successors, (6974), 5388 states have internal predecessors, (6974), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-14 00:08:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 10099 transitions. [2022-07-14 00:08:58,552 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 10099 transitions. Word has length 185 [2022-07-14 00:08:58,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:08:58,553 INFO L495 AbstractCegarLoop]: Abstraction has 7160 states and 10099 transitions. [2022-07-14 00:08:58,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-14 00:08:58,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 10099 transitions. [2022-07-14 00:08:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-14 00:08:58,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:08:58,558 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:08:58,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-14 00:08:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:08:58,772 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:08:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:08:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1423043673, now seen corresponding path program 1 times [2022-07-14 00:08:58,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:08:58,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514985299] [2022-07-14 00:08:58,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:08:58,775 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:08:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:08:58,776 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) [2022-07-14 00:08:58,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-14 00:09:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 00:09:01,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:09:02,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 00:09:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-14 00:09:04,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:09:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514985299] [2022-07-14 00:09:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514985299] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 00:09:04,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 00:09:04,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-14 00:09:04,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708699528] [2022-07-14 00:09:04,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 00:09:04,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 00:09:04,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:09:04,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 00:09:04,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-14 00:09:04,846 INFO L87 Difference]: Start difference. First operand 7160 states and 10099 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 00:09:09,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:09,634 INFO L93 Difference]: Finished difference Result 17198 states and 24474 transitions. [2022-07-14 00:09:09,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-14 00:09:09,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 187 [2022-07-14 00:09:09,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:09,691 INFO L225 Difference]: With dead ends: 17198 [2022-07-14 00:09:09,699 INFO L226 Difference]: Without dead ends: 10064 [2022-07-14 00:09:09,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-14 00:09:09,730 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 323 mSDsluCounter, 9955 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 11454 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:09,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 11454 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 00:09:09,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-07-14 00:09:10,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7152. [2022-07-14 00:09:10,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 5250 states have (on average 1.326857142857143) internal successors, (6966), 5380 states have internal predecessors, (6966), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-14 00:09:10,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 10091 transitions. [2022-07-14 00:09:10,226 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 10091 transitions. Word has length 187 [2022-07-14 00:09:10,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:10,240 INFO L495 AbstractCegarLoop]: Abstraction has 7152 states and 10091 transitions. [2022-07-14 00:09:10,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 00:09:10,240 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 10091 transitions. [2022-07-14 00:09:10,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-14 00:09:10,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:10,246 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:10,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:10,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:09:10,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:10,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1679269715, now seen corresponding path program 1 times [2022-07-14 00:09:10,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:09:10,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488706105] [2022-07-14 00:09:10,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:10,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:09:10,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:09:10,473 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 00:09:10,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-14 00:09:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 00:09:13,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 00:09:13,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 00:09:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-14 00:09:14,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 00:09:14,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 00:09:14,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488706105] [2022-07-14 00:09:14,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488706105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 00:09:14,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 00:09:14,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 00:09:14,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294414652] [2022-07-14 00:09:14,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 00:09:14,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 00:09:14,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 00:09:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 00:09:14,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 00:09:14,155 INFO L87 Difference]: Start difference. First operand 7152 states and 10091 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 00:09:16,305 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 00:09:21,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 00:09:21,695 INFO L93 Difference]: Finished difference Result 18160 states and 25375 transitions. [2022-07-14 00:09:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-14 00:09:21,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 201 [2022-07-14 00:09:21,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 00:09:21,746 INFO L225 Difference]: With dead ends: 18160 [2022-07-14 00:09:21,747 INFO L226 Difference]: Without dead ends: 11034 [2022-07-14 00:09:21,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-14 00:09:21,795 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 624 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 7113 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-14 00:09:21,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 7113 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2022-07-14 00:09:21,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11034 states. [2022-07-14 00:09:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11034 to 7184. [2022-07-14 00:09:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 5282 states have (on average 1.324876940552821) internal successors, (6998), 5412 states have internal predecessors, (6998), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-14 00:09:22,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10123 transitions. [2022-07-14 00:09:22,304 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10123 transitions. Word has length 201 [2022-07-14 00:09:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 00:09:22,306 INFO L495 AbstractCegarLoop]: Abstraction has 7184 states and 10123 transitions. [2022-07-14 00:09:22,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-14 00:09:22,307 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10123 transitions. [2022-07-14 00:09:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-14 00:09:22,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 00:09:22,328 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 00:09:22,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-14 00:09:22,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 00:09:22,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 00:09:22,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 00:09:22,548 INFO L85 PathProgramCache]: Analyzing trace with hash 399406037, now seen corresponding path program 1 times [2022-07-14 00:09:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 00:09:22,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624085030] [2022-07-14 00:09:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 00:09:22,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 00:09:22,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 00:09:22,571 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 00:09:22,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process