./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 01:42:05,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:42:05,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:42:05,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:42:05,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:42:05,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:42:05,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:42:05,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:42:05,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:42:05,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:42:05,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:42:05,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:42:05,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:42:05,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:42:05,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:42:05,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:42:05,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:42:05,780 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:42:05,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:42:05,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:42:05,788 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:42:05,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:42:05,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:42:05,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:42:05,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:42:05,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:42:05,801 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:42:05,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:42:05,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:42:05,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:42:05,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:42:05,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:42:05,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:42:05,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:42:05,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:42:05,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:42:05,809 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:42:05,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:42:05,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:42:05,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:42:05,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:42:05,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:42:05,814 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-14 01:42:05,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:42:05,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:42:05,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:42:05,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:42:05,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:42:05,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:42:05,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:42:05,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:42:05,847 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:42:05,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:42:05,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-14 01:42:05,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:42:05,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:42:05,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:42:05,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:42:05,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:42:05,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:42:05,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:42:05,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:42:05,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:42:05,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:42:05,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:42:05,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:42:05,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:42:05,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:42:05,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-14 01:42:05,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-14 01:42:05,852 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:42:05,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:42:05,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:42:05,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-14 01:42:06,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:42:06,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:42:06,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:42:06,153 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:42:06,154 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:42:06,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-14 01:42:06,226 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb619632/e06856398f3f4fc6a8e91608e709128c/FLAG74530f20c [2022-07-14 01:42:06,939 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:42:06,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-14 01:42:06,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb619632/e06856398f3f4fc6a8e91608e709128c/FLAG74530f20c [2022-07-14 01:42:07,047 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfb619632/e06856398f3f4fc6a8e91608e709128c [2022-07-14 01:42:07,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:42:07,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:42:07,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:42:07,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:42:07,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:42:07,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:42:07" (1/1) ... [2022-07-14 01:42:07,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cac5773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:07, skipping insertion in model container [2022-07-14 01:42:07,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:42:07" (1/1) ... [2022-07-14 01:42:07,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:42:07,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:42:08,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-14 01:42:09,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:42:09,066 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:42:09,224 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) 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:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) 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 01:42:09,229 INFO L158 Benchmark]: Toolchain (without parser) took 2176.05ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 54.2MB in the beginning and 64.7MB in the end (delta: -10.5MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-07-14 01:42:09,230 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-14 01:42:09,231 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2171.02ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 54.2MB in the beginning and 64.7MB in the end (delta: -10.5MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. [2022-07-14 01:42:09,232 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory is still 48.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2171.02ms. Allocated memory was 94.4MB in the beginning and 123.7MB in the end (delta: 29.4MB). Free memory was 54.2MB in the beginning and 64.7MB in the end (delta: -10.5MB). Peak memory consumption was 43.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.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 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-14 01:42:11,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-14 01:42:11,204 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-14 01:42:11,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-14 01:42:11,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-14 01:42:11,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-14 01:42:11,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-14 01:42:11,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-14 01:42:11,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-14 01:42:11,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-14 01:42:11,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-14 01:42:11,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-14 01:42:11,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-14 01:42:11,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-14 01:42:11,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-14 01:42:11,273 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-14 01:42:11,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-14 01:42:11,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-14 01:42:11,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-14 01:42:11,282 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-14 01:42:11,283 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-14 01:42:11,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-14 01:42:11,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-14 01:42:11,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-14 01:42:11,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-14 01:42:11,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-14 01:42:11,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-14 01:42:11,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-14 01:42:11,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-14 01:42:11,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-14 01:42:11,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-14 01:42:11,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-14 01:42:11,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-14 01:42:11,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-14 01:42:11,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-14 01:42:11,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-14 01:42:11,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-14 01:42:11,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-14 01:42:11,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-14 01:42:11,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-14 01:42:11,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-14 01:42:11,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-14 01:42:11,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-14 01:42:11,354 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-14 01:42:11,355 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-14 01:42:11,355 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-14 01:42:11,355 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-14 01:42:11,356 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-14 01:42:11,356 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-14 01:42:11,357 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-14 01:42:11,358 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-14 01:42:11,358 INFO L138 SettingsManager]: * Use SBE=true [2022-07-14 01:42:11,359 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-14 01:42:11,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-14 01:42:11,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-14 01:42:11,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-14 01:42:11,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-14 01:42:11,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-14 01:42:11,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-14 01:42:11,361 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-14 01:42:11,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-14 01:42:11,361 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-14 01:42:11,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-14 01:42:11,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-14 01:42:11,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-14 01:42:11,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-14 01:42:11,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:42:11,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-14 01:42:11,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-14 01:42:11,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-14 01:42:11,363 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-14 01:42:11,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-14 01:42:11,364 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-14 01:42:11,364 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-14 01:42:11,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-14 01:42:11,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-14 01:42:11,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-14 01:42:11,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-14 01:42:11,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-14 01:42:11,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-14 01:42:11,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-14 01:42:11,734 INFO L275 PluginConnector]: CDTParser initialized [2022-07-14 01:42:11,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-14 01:42:11,809 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c589dfd/8cc52985f71e47d790505efa785bf04e/FLAGa7a6e88a6 [2022-07-14 01:42:12,590 INFO L306 CDTParser]: Found 1 translation units. [2022-07-14 01:42:12,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-14 01:42:12,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c589dfd/8cc52985f71e47d790505efa785bf04e/FLAGa7a6e88a6 [2022-07-14 01:42:12,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9c589dfd/8cc52985f71e47d790505efa785bf04e [2022-07-14 01:42:12,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-14 01:42:12,660 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-14 01:42:12,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-14 01:42:12,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-14 01:42:12,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-14 01:42:12,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:42:12" (1/1) ... [2022-07-14 01:42:12,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b382ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:12, skipping insertion in model container [2022-07-14 01:42:12,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.07 01:42:12" (1/1) ... [2022-07-14 01:42:12,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-14 01:42:12,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:42:14,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-14 01:42:14,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:42:14,643 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-14 01:42:14,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-14 01:42:14,943 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-14 01:42:14,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:42:14,988 INFO L203 MainTranslator]: Completed pre-run [2022-07-14 01:42:15,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-14 01:42:15,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-14 01:42:15,392 INFO L208 MainTranslator]: Completed translation [2022-07-14 01:42:15,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15 WrapperNode [2022-07-14 01:42:15,393 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-14 01:42:15,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-14 01:42:15,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-14 01:42:15,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-14 01:42:15,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,669 INFO L137 Inliner]: procedures = 265, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3180 [2022-07-14 01:42:15,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-14 01:42:15,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-14 01:42:15,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-14 01:42:15,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-14 01:42:15,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-14 01:42:15,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-14 01:42:15,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-14 01:42:15,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-14 01:42:15,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (1/1) ... [2022-07-14 01:42:15,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-14 01:42:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-14 01:42:15,986 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 01:42:16,007 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 01:42:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-14 01:42:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-14 01:42:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-14 01:42:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-14 01:42:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-14 01:42:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-14 01:42:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-14 01:42:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-14 01:42:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-14 01:42:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-14 01:42:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-14 01:42:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-14 01:42:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-14 01:42:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-14 01:42:16,027 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-14 01:42:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-14 01:42:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-14 01:42:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-14 01:42:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-14 01:42:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-14 01:42:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-14 01:42:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-14 01:42:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-14 01:42:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-14 01:42:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-14 01:42:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-14 01:42:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-14 01:42:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-14 01:42:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-14 01:42:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-14 01:42:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-14 01:42:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-14 01:42:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-14 01:42:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-14 01:42:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-14 01:42:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-14 01:42:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-14 01:42:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-14 01:42:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-14 01:42:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-14 01:42:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-14 01:42:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-14 01:42:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-14 01:42:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-14 01:42:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-14 01:42:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-14 01:42:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-14 01:42:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-14 01:42:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-14 01:42:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-14 01:42:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-14 01:42:16,035 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-14 01:42:16,035 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-14 01:42:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-14 01:42:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-14 01:42:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-14 01:42:16,036 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-14 01:42:16,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-14 01:42:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-14 01:42:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-14 01:42:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-14 01:42:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-14 01:42:16,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-14 01:42:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-14 01:42:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-14 01:42:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-14 01:42:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-14 01:42:16,038 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-14 01:42:16,039 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-14 01:42:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-14 01:42:16,039 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-14 01:42:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-14 01:42:16,039 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-14 01:42:16,039 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-14 01:42:16,039 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-14 01:42:16,040 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-14 01:42:16,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-14 01:42:16,040 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-14 01:42:16,040 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-14 01:42:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-14 01:42:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-14 01:42:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-14 01:42:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-14 01:42:16,041 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-14 01:42:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-14 01:42:16,042 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-14 01:42:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-14 01:42:16,043 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-14 01:42:16,043 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-14 01:42:16,043 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-14 01:42:16,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-14 01:42:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-14 01:42:16,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-14 01:42:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-14 01:42:16,044 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-14 01:42:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-14 01:42:16,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-14 01:42:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-14 01:42:16,045 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-14 01:42:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-14 01:42:16,045 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-14 01:42:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-14 01:42:16,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-14 01:42:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-14 01:42:16,046 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-14 01:42:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-14 01:42:16,047 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-14 01:42:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-14 01:42:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-14 01:42:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-14 01:42:16,049 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-14 01:42:16,050 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-14 01:42:16,051 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-14 01:42:16,051 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-14 01:42:16,051 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-14 01:42:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-14 01:42:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-14 01:42:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-14 01:42:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-14 01:42:16,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-14 01:42:16,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-14 01:42:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-14 01:42:16,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-14 01:42:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-14 01:42:16,058 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-14 01:42:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-14 01:42:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-14 01:42:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-07-14 01:42:16,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-07-14 01:42:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-14 01:42:16,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-14 01:42:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-14 01:42:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-14 01:42:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-14 01:42:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 01:42:16,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-14 01:42:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-14 01:42:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-14 01:42:16,060 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-14 01:42:16,060 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-14 01:42:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-14 01:42:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-14 01:42:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-14 01:42:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-14 01:42:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-14 01:42:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-14 01:42:16,061 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-14 01:42:16,061 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-14 01:42:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-14 01:42:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-14 01:42:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-14 01:42:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-14 01:42:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-14 01:42:16,062 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-14 01:42:16,062 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-14 01:42:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-14 01:42:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-14 01:42:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-14 01:42:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-14 01:42:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-14 01:42:16,063 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-14 01:42:16,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-14 01:42:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-14 01:42:16,064 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-14 01:42:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-14 01:42:16,064 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-14 01:42:16,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-14 01:42:16,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-14 01:42:16,676 INFO L234 CfgBuilder]: Building ICFG [2022-07-14 01:42:16,679 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-14 01:42:17,473 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-14 01:42:31,106 INFO L275 CfgBuilder]: Performing block encoding [2022-07-14 01:42:31,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-14 01:42:31,130 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-14 01:42:31,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:42:31 BoogieIcfgContainer [2022-07-14 01:42:31,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-14 01:42:31,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-14 01:42:31,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-14 01:42:31,140 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-14 01:42:31,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.07 01:42:12" (1/3) ... [2022-07-14 01:42:31,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e945bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:42:31, skipping insertion in model container [2022-07-14 01:42:31,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.07 01:42:15" (2/3) ... [2022-07-14 01:42:31,141 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e945bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 01:42:31, skipping insertion in model container [2022-07-14 01:42:31,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 01:42:31" (3/3) ... [2022-07-14 01:42:31,142 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-14 01:42:31,155 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-14 01:42:31,155 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-14 01:42:31,241 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-14 01:42:31,251 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@1c425abd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@553279a1 [2022-07-14 01:42:31,251 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-14 01:42:31,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-14 01:42:31,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-14 01:42:31,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:31,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:31,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:31,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1615853478, now seen corresponding path program 1 times [2022-07-14 01:42:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298954790] [2022-07-14 01:42:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:31,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:31,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:31,296 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 01:42:31,304 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 01:42:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:32,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-14 01:42:32,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-14 01:42:32,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:32,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:32,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298954790] [2022-07-14 01:42:32,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298954790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:32,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:32,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:42:32,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723249295] [2022-07-14 01:42:32,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:32,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-14 01:42:32,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-14 01:42:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 01:42:32,530 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:42:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:32,669 INFO L93 Difference]: Finished difference Result 2199 states and 3148 transitions. [2022-07-14 01:42:32,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-14 01:42:32,671 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-14 01:42:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:32,694 INFO L225 Difference]: With dead ends: 2199 [2022-07-14 01:42:32,694 INFO L226 Difference]: Without dead ends: 1089 [2022-07-14 01:42:32,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-14 01:42:32,711 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 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 01:42:32,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:42:32,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-07-14 01:42:32,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-07-14 01:42:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2022-07-14 01:42:32,825 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2022-07-14 01:42:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:32,828 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2022-07-14 01:42:32,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:42:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2022-07-14 01:42:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-14 01:42:32,833 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:32,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:32,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-14 01:42:33,040 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 01:42:33,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:33,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1669556384, now seen corresponding path program 1 times [2022-07-14 01:42:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:33,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013837922] [2022-07-14 01:42:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:33,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:33,044 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 01:42:33,044 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 01:42:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:34,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-14 01:42:34,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:34,317 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:34,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:34,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:34,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013837922] [2022-07-14 01:42:34,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013837922] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:34,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:34,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:42:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160172670] [2022-07-14 01:42:34,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:42:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:42:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:42:34,320 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 01:42:34,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:34,504 INFO L93 Difference]: Finished difference Result 2171 states and 3037 transitions. [2022-07-14 01:42:34,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:42:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-07-14 01:42:34,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:34,517 INFO L225 Difference]: With dead ends: 2171 [2022-07-14 01:42:34,518 INFO L226 Difference]: Without dead ends: 1090 [2022-07-14 01:42:34,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:42:34,524 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 364 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:34,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 5624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:42:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-14 01:42:34,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-14 01:42:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 765 states have (on average 1.330718954248366) internal successors, (1018), 796 states have internal predecessors, (1018), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:34,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1522 transitions. [2022-07-14 01:42:34,590 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1522 transitions. Word has length 72 [2022-07-14 01:42:34,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:34,591 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1522 transitions. [2022-07-14 01:42:34,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-14 01:42:34,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1522 transitions. [2022-07-14 01:42:34,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-14 01:42:34,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:34,599 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:34,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-14 01:42:34,819 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 01:42:34,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:34,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2122471599, now seen corresponding path program 1 times [2022-07-14 01:42:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:34,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025566658] [2022-07-14 01:42:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:34,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:34,824 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 01:42:34,825 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 01:42:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:35,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 01:42:35,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:36,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:42:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:36,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:36,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025566658] [2022-07-14 01:42:36,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025566658] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:42:36,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:42:36,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-14 01:42:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459978712] [2022-07-14 01:42:36,502 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:42:36,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-14 01:42:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-14 01:42:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:42:36,503 INFO L87 Difference]: Start difference. First operand 1090 states and 1522 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:37,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:37,047 INFO L93 Difference]: Finished difference Result 2173 states and 3039 transitions. [2022-07-14 01:42:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 01:42:37,048 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-14 01:42:37,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:37,056 INFO L225 Difference]: With dead ends: 2173 [2022-07-14 01:42:37,056 INFO L226 Difference]: Without dead ends: 1091 [2022-07-14 01:42:37,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-14 01:42:37,062 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 729 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 8654 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:37,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 8654 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 01:42:37,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-14 01:42:37,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-14 01:42:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 766 states have (on average 1.3302872062663185) internal successors, (1019), 797 states have internal predecessors, (1019), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:37,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1523 transitions. [2022-07-14 01:42:37,103 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1523 transitions. Word has length 73 [2022-07-14 01:42:37,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:37,103 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1523 transitions. [2022-07-14 01:42:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:37,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1523 transitions. [2022-07-14 01:42:37,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-14 01:42:37,105 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:37,105 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:42:37,153 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 01:42:37,319 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 01:42:37,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:37,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1017025920, now seen corresponding path program 2 times [2022-07-14 01:42:37,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:37,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488287426] [2022-07-14 01:42:37,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:42:37,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:37,323 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 01:42:37,325 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 01:42:38,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:42:38,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:42:38,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:38,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-14 01:42:38,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:38,708 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:38,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488287426] [2022-07-14 01:42:38,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488287426] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:38,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:38,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:42:38,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333107406] [2022-07-14 01:42:38,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:38,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:38,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:38,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:38,710 INFO L87 Difference]: Start difference. First operand 1091 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:38,750 INFO L93 Difference]: Finished difference Result 1093 states and 1524 transitions. [2022-07-14 01:42:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:38,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2022-07-14 01:42:38,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:38,758 INFO L225 Difference]: With dead ends: 1093 [2022-07-14 01:42:38,759 INFO L226 Difference]: Without dead ends: 1090 [2022-07-14 01:42:38,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 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 01:42:38,760 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1518 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 01:42:38,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:42:38,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-14 01:42:38,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-14 01:42:38,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 766 states have (on average 1.328981723237598) internal successors, (1018), 796 states have internal predecessors, (1018), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:38,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1521 transitions. [2022-07-14 01:42:38,803 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1521 transitions. Word has length 74 [2022-07-14 01:42:38,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:38,803 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1521 transitions. [2022-07-14 01:42:38,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:38,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1521 transitions. [2022-07-14 01:42:38,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-14 01:42:38,805 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:38,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 01:42:38,851 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 01:42:39,027 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 01:42:39,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:39,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:39,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1462680797, now seen corresponding path program 1 times [2022-07-14 01:42:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:39,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629720084] [2022-07-14 01:42:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:39,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:39,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:39,032 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 01:42:39,034 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 01:42:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:40,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:42:40,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:40,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:42:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:41,009 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629720084] [2022-07-14 01:42:41,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629720084] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:42:41,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:42:41,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-14 01:42:41,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504894432] [2022-07-14 01:42:41,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:42:41,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-14 01:42:41,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:41,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-14 01:42:41,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-14 01:42:41,011 INFO L87 Difference]: Start difference. First operand 1090 states and 1521 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:41,364 INFO L93 Difference]: Finished difference Result 2173 states and 3037 transitions. [2022-07-14 01:42:41,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:42:41,366 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2022-07-14 01:42:41,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:41,373 INFO L225 Difference]: With dead ends: 2173 [2022-07-14 01:42:41,373 INFO L226 Difference]: Without dead ends: 1091 [2022-07-14 01:42:41,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-14 01:42:41,379 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 365 mSDsluCounter, 9713 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:41,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11230 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:42:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-14 01:42:41,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-14 01:42:41,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 767 states have (on average 1.3285528031290743) internal successors, (1019), 797 states have internal predecessors, (1019), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1522 transitions. [2022-07-14 01:42:41,419 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1522 transitions. Word has length 75 [2022-07-14 01:42:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:41,419 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1522 transitions. [2022-07-14 01:42:41,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1522 transitions. [2022-07-14 01:42:41,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-14 01:42:41,421 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:41,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:41,468 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 01:42:41,639 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 01:42:41,639 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash -842212532, now seen corresponding path program 2 times [2022-07-14 01:42:41,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591874105] [2022-07-14 01:42:41,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:42:41,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:41,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:41,644 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 01:42:41,646 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 01:42:42,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:42:42,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:42:42,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:42,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:43,057 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-14 01:42:43,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:43,057 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:43,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591874105] [2022-07-14 01:42:43,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591874105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:43,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:43,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:42:43,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695591458] [2022-07-14 01:42:43,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:43,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:43,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:43,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:43,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:43,059 INFO L87 Difference]: Start difference. First operand 1091 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:43,097 INFO L93 Difference]: Finished difference Result 1093 states and 1523 transitions. [2022-07-14 01:42:43,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2022-07-14 01:42:43,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:43,105 INFO L225 Difference]: With dead ends: 1093 [2022-07-14 01:42:43,106 INFO L226 Difference]: Without dead ends: 1090 [2022-07-14 01:42:43,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 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 01:42:43,108 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1516 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 01:42:43,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1516 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:42:43,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-14 01:42:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-14 01:42:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 767 states have (on average 1.3272490221642763) internal successors, (1018), 796 states have internal predecessors, (1018), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:43,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1520 transitions. [2022-07-14 01:42:43,156 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1520 transitions. Word has length 76 [2022-07-14 01:42:43,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:43,156 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1520 transitions. [2022-07-14 01:42:43,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1520 transitions. [2022-07-14 01:42:43,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-14 01:42:43,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:43,163 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:43,203 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 01:42:43,383 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 01:42:43,384 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:43,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash -339131500, now seen corresponding path program 1 times [2022-07-14 01:42:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:43,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215607819] [2022-07-14 01:42:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:43,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:43,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:43,387 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 01:42:43,388 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 01:42:44,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:44,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-14 01:42:44,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:44,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:42:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-14 01:42:45,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:45,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215607819] [2022-07-14 01:42:45,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215607819] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:42:45,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:42:45,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-14 01:42:45,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130565300] [2022-07-14 01:42:45,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:42:45,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-14 01:42:45,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:45,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-14 01:42:45,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-14 01:42:45,471 INFO L87 Difference]: Start difference. First operand 1090 states and 1520 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:45,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:45,883 INFO L93 Difference]: Finished difference Result 2173 states and 3035 transitions. [2022-07-14 01:42:45,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 01:42:45,884 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-07-14 01:42:45,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:45,892 INFO L225 Difference]: With dead ends: 2173 [2022-07-14 01:42:45,892 INFO L226 Difference]: Without dead ends: 1091 [2022-07-14 01:42:45,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-14 01:42:45,899 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 365 mSDsluCounter, 9701 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11216 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:45,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11216 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 01:42:45,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-14 01:42:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-14 01:42:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 768 states have (on average 1.3268229166666667) internal successors, (1019), 797 states have internal predecessors, (1019), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1521 transitions. [2022-07-14 01:42:45,948 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1521 transitions. Word has length 77 [2022-07-14 01:42:45,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:45,950 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1521 transitions. [2022-07-14 01:42:45,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-14 01:42:45,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1521 transitions. [2022-07-14 01:42:45,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-14 01:42:45,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:45,952 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:45,999 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 01:42:46,168 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 01:42:46,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:46,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:46,169 INFO L85 PathProgramCache]: Analyzing trace with hash 861504067, now seen corresponding path program 2 times [2022-07-14 01:42:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:46,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618617062] [2022-07-14 01:42:46,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:42:46,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:46,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:46,173 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 01:42:46,175 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 01:42:47,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:42:47,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:42:47,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:47,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:42:47,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:47,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:47,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618617062] [2022-07-14 01:42:47,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618617062] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:47,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:47,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:42:47,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710743015] [2022-07-14 01:42:47,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:47,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:47,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:47,593 INFO L87 Difference]: Start difference. First operand 1091 states and 1521 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:47,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:47,627 INFO L93 Difference]: Finished difference Result 1093 states and 1522 transitions. [2022-07-14 01:42:47,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:47,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2022-07-14 01:42:47,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:47,636 INFO L225 Difference]: With dead ends: 1093 [2022-07-14 01:42:47,636 INFO L226 Difference]: Without dead ends: 1090 [2022-07-14 01:42:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 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 01:42:47,637 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1514 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 01:42:47,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1514 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:42:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-14 01:42:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-14 01:42:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 768 states have (on average 1.3255208333333333) internal successors, (1018), 796 states have internal predecessors, (1018), 252 states have call successors, (252), 70 states have call predecessors, (252), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-14 01:42:47,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1519 transitions. [2022-07-14 01:42:47,679 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1519 transitions. Word has length 78 [2022-07-14 01:42:47,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:47,680 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1519 transitions. [2022-07-14 01:42:47,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1519 transitions. [2022-07-14 01:42:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-14 01:42:47,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:47,681 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:47,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-14 01:42:47,903 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 01:42:47,904 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:47,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:47,904 INFO L85 PathProgramCache]: Analyzing trace with hash 936480384, now seen corresponding path program 1 times [2022-07-14 01:42:47,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:47,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888401498] [2022-07-14 01:42:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:47,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:47,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:47,908 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 01:42:47,910 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 01:42:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:49,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:49,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:42:49,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:49,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:49,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888401498] [2022-07-14 01:42:49,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888401498] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:49,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:49,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:42:49,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676742601] [2022-07-14 01:42:49,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:49,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:49,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:49,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:49,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:49,120 INFO L87 Difference]: Start difference. First operand 1090 states and 1519 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:49,391 INFO L93 Difference]: Finished difference Result 3228 states and 4505 transitions. [2022-07-14 01:42:49,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:49,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 79 [2022-07-14 01:42:49,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:49,405 INFO L225 Difference]: With dead ends: 3228 [2022-07-14 01:42:49,405 INFO L226 Difference]: Without dead ends: 2151 [2022-07-14 01:42:49,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 01:42:49,412 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1479 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3296 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:42:49,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-14 01:42:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2147. [2022-07-14 01:42:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1512 states have (on average 1.3280423280423281) internal successors, (2008), 1566 states have internal predecessors, (2008), 496 states have call successors, (496), 139 states have call predecessors, (496), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-14 01:42:49,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2997 transitions. [2022-07-14 01:42:49,501 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2997 transitions. Word has length 79 [2022-07-14 01:42:49,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:49,502 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 2997 transitions. [2022-07-14 01:42:49,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-14 01:42:49,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2997 transitions. [2022-07-14 01:42:49,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-14 01:42:49,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:49,504 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:49,546 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 01:42:49,723 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 01:42:49,723 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:49,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:49,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1356184505, now seen corresponding path program 1 times [2022-07-14 01:42:49,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:49,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107698589] [2022-07-14 01:42:49,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:49,731 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 01:42:49,733 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 01:42:50,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:50,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-14 01:42:50,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:50,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [107698589] [2022-07-14 01:42:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [107698589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:50,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:50,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:42:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451227318] [2022-07-14 01:42:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:50,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:50,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:50,879 INFO L87 Difference]: Start difference. First operand 2147 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:42:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:51,232 INFO L93 Difference]: Finished difference Result 6092 states and 8514 transitions. [2022-07-14 01:42:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-07-14 01:42:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:51,261 INFO L225 Difference]: With dead ends: 6092 [2022-07-14 01:42:51,262 INFO L226 Difference]: Without dead ends: 3968 [2022-07-14 01:42:51,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 01:42:51,274 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1302 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:51,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 3461 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:42:51,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-07-14 01:42:51,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3930. [2022-07-14 01:42:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3304473304473305) internal successors, (3688), 2870 states have internal predecessors, (3688), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-14 01:42:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5501 transitions. [2022-07-14 01:42:51,454 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5501 transitions. Word has length 85 [2022-07-14 01:42:51,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:51,455 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5501 transitions. [2022-07-14 01:42:51,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-14 01:42:51,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5501 transitions. [2022-07-14 01:42:51,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-14 01:42:51,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:51,458 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:42:51,498 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 01:42:51,679 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 01:42:51,679 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:51,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1100131717, now seen corresponding path program 1 times [2022-07-14 01:42:51,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:51,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433328690] [2022-07-14 01:42:51,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:51,684 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 01:42:51,686 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 01:42:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:52,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:52,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-14 01:42:52,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:52,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433328690] [2022-07-14 01:42:52,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433328690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:52,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:52,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:42:52,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005339921] [2022-07-14 01:42:52,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:52,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:52,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:52,879 INFO L87 Difference]: Start difference. First operand 3930 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 01:42:53,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:53,072 INFO L93 Difference]: Finished difference Result 3946 states and 5515 transitions. [2022-07-14 01:42:53,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:53,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-14 01:42:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:53,101 INFO L225 Difference]: With dead ends: 3946 [2022-07-14 01:42:53,101 INFO L226 Difference]: Without dead ends: 3938 [2022-07-14 01:42:53,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 01:42:53,107 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1510 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:53,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1528 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:42:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-07-14 01:42:53,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3930. [2022-07-14 01:42:53,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3297258297258296) internal successors, (3686), 2870 states have internal predecessors, (3686), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-14 01:42:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5499 transitions. [2022-07-14 01:42:53,302 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5499 transitions. Word has length 99 [2022-07-14 01:42:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5499 transitions. [2022-07-14 01:42:53,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 01:42:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5499 transitions. [2022-07-14 01:42:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-14 01:42:53,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:53,306 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:42:53,347 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 01:42:53,519 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 01:42:53,519 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:53,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:53,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1780190087, now seen corresponding path program 1 times [2022-07-14 01:42:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:53,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665998501] [2022-07-14 01:42:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:53,523 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 01:42:53,525 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 01:42:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:54,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:54,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-14 01:42:55,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:55,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:55,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665998501] [2022-07-14 01:42:55,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665998501] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:55,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:55,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-14 01:42:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881410600] [2022-07-14 01:42:55,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:55,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:55,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:55,131 INFO L87 Difference]: Start difference. First operand 3930 states and 5499 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 01:42:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:55,382 INFO L93 Difference]: Finished difference Result 11724 states and 16423 transitions. [2022-07-14 01:42:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-14 01:42:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:55,448 INFO L225 Difference]: With dead ends: 11724 [2022-07-14 01:42:55,448 INFO L226 Difference]: Without dead ends: 7809 [2022-07-14 01:42:55,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 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 01:42:55,470 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1451 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:55,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3401 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-14 01:42:55,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2022-07-14 01:42:55,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7803. [2022-07-14 01:42:55,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5501 states have (on average 1.3304853662970368) internal successors, (7319), 5696 states have internal predecessors, (7319), 1785 states have call successors, (1785), 523 states have call predecessors, (1785), 516 states have return successors, (1826), 1707 states have call predecessors, (1826), 1782 states have call successors, (1826) [2022-07-14 01:42:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 10930 transitions. [2022-07-14 01:42:55,813 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 10930 transitions. Word has length 99 [2022-07-14 01:42:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:55,814 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 10930 transitions. [2022-07-14 01:42:55,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-14 01:42:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 10930 transitions. [2022-07-14 01:42:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-14 01:42:55,825 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:55,825 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-14 01:42:55,866 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 01:42:56,047 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 01:42:56,047 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:56,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1638859229, now seen corresponding path program 1 times [2022-07-14 01:42:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:56,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009209623] [2022-07-14 01:42:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:56,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:56,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:56,050 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 01:42:56,051 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 01:42:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:42:57,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-14 01:42:57,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:42:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-14 01:42:57,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:42:57,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:42:57,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009209623] [2022-07-14 01:42:57,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009209623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:42:57,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:42:57,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-14 01:42:57,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126586490] [2022-07-14 01:42:57,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:42:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-14 01:42:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:42:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-14 01:42:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-14 01:42:57,399 INFO L87 Difference]: Start difference. First operand 7803 states and 10930 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 01:42:57,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:42:57,951 INFO L93 Difference]: Finished difference Result 21077 states and 29504 transitions. [2022-07-14 01:42:57,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-14 01:42:57,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-07-14 01:42:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:42:58,069 INFO L225 Difference]: With dead ends: 21077 [2022-07-14 01:42:58,069 INFO L226 Difference]: Without dead ends: 13297 [2022-07-14 01:42:58,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 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 01:42:58,097 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 1099 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:42:58,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-14 01:42:58,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-07-14 01:42:58,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 13275. [2022-07-14 01:42:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 9282 states have (on average 1.3269769446240034) internal successors, (12317), 9639 states have internal predecessors, (12317), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-14 01:42:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 18572 transitions. [2022-07-14 01:42:58,696 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 18572 transitions. Word has length 188 [2022-07-14 01:42:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:42:58,697 INFO L495 AbstractCegarLoop]: Abstraction has 13275 states and 18572 transitions. [2022-07-14 01:42:58,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-14 01:42:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 18572 transitions. [2022-07-14 01:42:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-14 01:42:58,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:42:58,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-14 01:42:58,767 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 01:42:58,935 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 01:42:58,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:42:58,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:42:58,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1778802056, now seen corresponding path program 1 times [2022-07-14 01:42:58,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:42:58,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251124593] [2022-07-14 01:42:58,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:42:58,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:42:58,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:42:58,939 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 01:42:58,940 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 01:43:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:00,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-14 01:43:00,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-14 01:43:00,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:00,561 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251124593] [2022-07-14 01:43:00,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251124593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:00,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:00,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-14 01:43:00,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505117993] [2022-07-14 01:43:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:00,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-14 01:43:00,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:00,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-14 01:43:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-14 01:43:00,563 INFO L87 Difference]: Start difference. First operand 13275 states and 18572 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 01:43:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:01,360 INFO L93 Difference]: Finished difference Result 30969 states and 44179 transitions. [2022-07-14 01:43:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:43:01,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 211 [2022-07-14 01:43:01,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:01,463 INFO L225 Difference]: With dead ends: 30969 [2022-07-14 01:43:01,464 INFO L226 Difference]: Without dead ends: 17725 [2022-07-14 01:43:01,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:01,518 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 720 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 5520 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:01,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 5520 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-14 01:43:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2022-07-14 01:43:02,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 13291. [2022-07-14 01:43:02,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 9298 states have (on average 1.3264142826414282) internal successors, (12333), 9655 states have internal predecessors, (12333), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-14 01:43:02,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18588 transitions. [2022-07-14 01:43:02,332 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18588 transitions. Word has length 211 [2022-07-14 01:43:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:02,333 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18588 transitions. [2022-07-14 01:43:02,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-14 01:43:02,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18588 transitions. [2022-07-14 01:43:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-14 01:43:02,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:02,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-14 01:43:02,407 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 01:43:02,568 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 01:43:02,569 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1257617411, now seen corresponding path program 1 times [2022-07-14 01:43:02,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371376624] [2022-07-14 01:43:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:02,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:02,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:02,572 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 01:43:02,575 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 01:43:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:04,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 01:43:04,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:04,498 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-14 01:43:04,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:04,499 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:04,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371376624] [2022-07-14 01:43:04,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371376624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:04,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:04,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:43:04,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094206991] [2022-07-14 01:43:04,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:04,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:43:04,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:04,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:43:04,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:04,500 INFO L87 Difference]: Start difference. First operand 13291 states and 18588 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 01:43:05,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:05,027 INFO L93 Difference]: Finished difference Result 28824 states and 40740 transitions. [2022-07-14 01:43:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:43:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 234 [2022-07-14 01:43:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:05,115 INFO L225 Difference]: With dead ends: 28824 [2022-07-14 01:43:05,115 INFO L226 Difference]: Without dead ends: 15564 [2022-07-14 01:43:05,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:05,167 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 264 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:05,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7242 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:43:05,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2022-07-14 01:43:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 13323. [2022-07-14 01:43:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13323 states, 9322 states have (on average 1.3255739111778588) internal successors, (12357), 9679 states have internal predecessors, (12357), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 915 states have return successors, (3186), 2947 states have call predecessors, (3186), 3082 states have call successors, (3186) [2022-07-14 01:43:05,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 18628 transitions. [2022-07-14 01:43:05,930 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 18628 transitions. Word has length 234 [2022-07-14 01:43:05,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:05,931 INFO L495 AbstractCegarLoop]: Abstraction has 13323 states and 18628 transitions. [2022-07-14 01:43:05,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 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 01:43:05,932 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 18628 transitions. [2022-07-14 01:43:05,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-14 01:43:05,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:05,950 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 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 01:43:06,004 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 01:43:06,171 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 01:43:06,172 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:06,172 INFO L85 PathProgramCache]: Analyzing trace with hash -562124410, now seen corresponding path program 1 times [2022-07-14 01:43:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:06,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331929911] [2022-07-14 01:43:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:06,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:06,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:06,176 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 01:43:06,178 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 01:43:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:08,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 01:43:08,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:08,243 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-14 01:43:08,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:08,244 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:08,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331929911] [2022-07-14 01:43:08,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331929911] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:08,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:08,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:43:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279092377] [2022-07-14 01:43:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:08,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:43:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:43:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:08,246 INFO L87 Difference]: Start difference. First operand 13323 states and 18628 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 01:43:08,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:08,901 INFO L93 Difference]: Finished difference Result 28888 states and 40820 transitions. [2022-07-14 01:43:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:43:08,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 241 [2022-07-14 01:43:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:08,987 INFO L225 Difference]: With dead ends: 28888 [2022-07-14 01:43:08,987 INFO L226 Difference]: Without dead ends: 15596 [2022-07-14 01:43:09,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:09,040 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 264 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:09,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7230 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:43:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2022-07-14 01:43:09,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 13355. [2022-07-14 01:43:09,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13355 states, 9346 states have (on average 1.3247378557671732) internal successors, (12381), 9703 states have internal predecessors, (12381), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-14 01:43:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13355 states to 13355 states and 18668 transitions. [2022-07-14 01:43:09,737 INFO L78 Accepts]: Start accepts. Automaton has 13355 states and 18668 transitions. Word has length 241 [2022-07-14 01:43:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:09,738 INFO L495 AbstractCegarLoop]: Abstraction has 13355 states and 18668 transitions. [2022-07-14 01:43:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 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 01:43:09,739 INFO L276 IsEmpty]: Start isEmpty. Operand 13355 states and 18668 transitions. [2022-07-14 01:43:09,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-14 01:43:09,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:09,756 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 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 01:43:09,814 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 01:43:09,975 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 01:43:09,976 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:09,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash 514428999, now seen corresponding path program 1 times [2022-07-14 01:43:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:09,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884260651] [2022-07-14 01:43:09,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:09,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:09,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:09,980 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 01:43:09,983 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 01:43:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:11,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 01:43:11,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-14 01:43:12,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:12,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:12,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884260651] [2022-07-14 01:43:12,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884260651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:12,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:12,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:43:12,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854779960] [2022-07-14 01:43:12,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:12,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:43:12,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:12,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:43:12,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:12,098 INFO L87 Difference]: Start difference. First operand 13355 states and 18668 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 01:43:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:12,742 INFO L93 Difference]: Finished difference Result 26751 states and 37469 transitions. [2022-07-14 01:43:12,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 01:43:12,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 241 [2022-07-14 01:43:12,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:12,809 INFO L225 Difference]: With dead ends: 26751 [2022-07-14 01:43:12,810 INFO L226 Difference]: Without dead ends: 13427 [2022-07-14 01:43:12,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:43:12,853 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 8 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:12,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6034 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-14 01:43:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-14 01:43:13,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13395. [2022-07-14 01:43:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 9386 states have (on average 1.3233539313871723) internal successors, (12421), 9743 states have internal predecessors, (12421), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-14 01:43:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 18708 transitions. [2022-07-14 01:43:13,584 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 18708 transitions. Word has length 241 [2022-07-14 01:43:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:13,585 INFO L495 AbstractCegarLoop]: Abstraction has 13395 states and 18708 transitions. [2022-07-14 01:43:13,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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 01:43:13,585 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 18708 transitions. [2022-07-14 01:43:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-14 01:43:13,601 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:13,602 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 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 01:43:13,657 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 01:43:13,823 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 01:43:13,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1176236545, now seen corresponding path program 1 times [2022-07-14 01:43:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:13,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069180916] [2022-07-14 01:43:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:13,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:13,828 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 01:43:13,829 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 01:43:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:15,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-14 01:43:15,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-14 01:43:16,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:16,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:16,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069180916] [2022-07-14 01:43:16,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069180916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:16,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:16,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-14 01:43:16,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137881661] [2022-07-14 01:43:16,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:16,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-14 01:43:16,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:16,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-14 01:43:16,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:43:16,017 INFO L87 Difference]: Start difference. First operand 13395 states and 18708 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 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 01:43:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:17,304 INFO L93 Difference]: Finished difference Result 31513 states and 44931 transitions. [2022-07-14 01:43:17,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-14 01:43:17,305 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 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 241 [2022-07-14 01:43:17,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:17,378 INFO L225 Difference]: With dead ends: 31513 [2022-07-14 01:43:17,378 INFO L226 Difference]: Without dead ends: 18149 [2022-07-14 01:43:17,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-14 01:43:17,416 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1396 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 11085 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:17,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 11085 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-14 01:43:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2022-07-14 01:43:18,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 13427. [2022-07-14 01:43:18,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.322255255892971) internal successors, (12453), 9767 states have internal predecessors, (12453), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-14 01:43:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18740 transitions. [2022-07-14 01:43:18,116 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18740 transitions. Word has length 241 [2022-07-14 01:43:18,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:18,117 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18740 transitions. [2022-07-14 01:43:18,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 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 01:43:18,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18740 transitions. [2022-07-14 01:43:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-14 01:43:18,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:18,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:18,185 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 01:43:18,355 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 01:43:18,356 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1540803124, now seen corresponding path program 1 times [2022-07-14 01:43:18,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:18,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238677151] [2022-07-14 01:43:18,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:18,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:18,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:18,359 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 01:43:18,360 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 01:43:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:20,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-14 01:43:20,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:20,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2022-07-14 01:43:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-14 01:43:20,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:20,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:20,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238677151] [2022-07-14 01:43:20,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238677151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:20,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:20,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-14 01:43:20,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108606649] [2022-07-14 01:43:20,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:20,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-14 01:43:20,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-14 01:43:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:20,571 INFO L87 Difference]: Start difference. First operand 13427 states and 18740 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 01:43:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:21,052 INFO L93 Difference]: Finished difference Result 26823 states and 37445 transitions. [2022-07-14 01:43:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-14 01:43:21,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 248 [2022-07-14 01:43:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:21,113 INFO L225 Difference]: With dead ends: 26823 [2022-07-14 01:43:21,113 INFO L226 Difference]: Without dead ends: 13427 [2022-07-14 01:43:21,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-14 01:43:21,147 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 0 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5878 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 189 Unchecked, 0.0s Time] [2022-07-14 01:43:21,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-14 01:43:21,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13427. [2022-07-14 01:43:21,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.3214058186451476) internal successors, (12445), 9767 states have internal predecessors, (12445), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-14 01:43:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18732 transitions. [2022-07-14 01:43:21,875 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18732 transitions. Word has length 248 [2022-07-14 01:43:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:21,876 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18732 transitions. [2022-07-14 01:43:21,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 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 01:43:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18732 transitions. [2022-07-14 01:43:21,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-14 01:43:21,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:21,894 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:21,957 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 01:43:22,107 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 01:43:22,108 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:22,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:22,108 INFO L85 PathProgramCache]: Analyzing trace with hash 937748831, now seen corresponding path program 1 times [2022-07-14 01:43:22,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:22,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577076627] [2022-07-14 01:43:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:22,111 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:22,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:22,113 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 01:43:22,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-14 01:43:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:24,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-14 01:43:24,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-14 01:43:24,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:24,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577076627] [2022-07-14 01:43:24,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577076627] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:24,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:24,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-14 01:43:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452300045] [2022-07-14 01:43:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:24,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-14 01:43:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:24,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-14 01:43:24,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-14 01:43:24,430 INFO L87 Difference]: Start difference. First operand 13427 states and 18732 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 01:43:25,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:25,665 INFO L93 Difference]: Finished difference Result 29836 states and 42204 transitions. [2022-07-14 01:43:25,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-14 01:43:25,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 253 [2022-07-14 01:43:25,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:25,733 INFO L225 Difference]: With dead ends: 29836 [2022-07-14 01:43:25,733 INFO L226 Difference]: Without dead ends: 16440 [2022-07-14 01:43:25,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-14 01:43:25,771 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 705 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 9058 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:25,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 9058 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-14 01:43:25,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2022-07-14 01:43:26,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 13467. [2022-07-14 01:43:26,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 9450 states have (on average 1.3203174603174603) internal successors, (12477), 9799 states have internal predecessors, (12477), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 931 states have return successors, (3250), 2971 states have call predecessors, (3250), 3082 states have call successors, (3250) [2022-07-14 01:43:26,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 18812 transitions. [2022-07-14 01:43:26,445 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 18812 transitions. Word has length 253 [2022-07-14 01:43:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:26,446 INFO L495 AbstractCegarLoop]: Abstraction has 13467 states and 18812 transitions. [2022-07-14 01:43:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-14 01:43:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 18812 transitions. [2022-07-14 01:43:26,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-14 01:43:26,456 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:26,457 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:26,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-14 01:43:26,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:43:26,657 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:26,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:26,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1571433039, now seen corresponding path program 1 times [2022-07-14 01:43:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:26,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904718768] [2022-07-14 01:43:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:26,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:26,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:26,662 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:43:26,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-14 01:43:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:28,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-14 01:43:28,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-14 01:43:29,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:43:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-14 01:43:30,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:30,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904718768] [2022-07-14 01:43:30,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904718768] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:43:30,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:43:30,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-07-14 01:43:30,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993253377] [2022-07-14 01:43:30,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:43:30,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-14 01:43:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:30,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-14 01:43:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-14 01:43:30,365 INFO L87 Difference]: Start difference. First operand 13467 states and 18812 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 01:43:33,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:43:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:34,514 INFO L93 Difference]: Finished difference Result 29190 states and 41214 transitions. [2022-07-14 01:43:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-14 01:43:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 259 [2022-07-14 01:43:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:34,586 INFO L225 Difference]: With dead ends: 29190 [2022-07-14 01:43:34,586 INFO L226 Difference]: Without dead ends: 15754 [2022-07-14 01:43:34,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 501 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-14 01:43:34,625 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 306 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 18570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:34,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 18570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-14 01:43:34,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2022-07-14 01:43:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 13499. [2022-07-14 01:43:35,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 9474 states have (on average 1.3186616001688833) internal successors, (12493), 9823 states have internal predecessors, (12493), 3093 states have call successors, (3093), 920 states have call predecessors, (3093), 931 states have return successors, (3258), 2975 states have call predecessors, (3258), 3090 states have call successors, (3258) [2022-07-14 01:43:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 18844 transitions. [2022-07-14 01:43:35,229 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 18844 transitions. Word has length 259 [2022-07-14 01:43:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:35,230 INFO L495 AbstractCegarLoop]: Abstraction has 13499 states and 18844 transitions. [2022-07-14 01:43:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-14 01:43:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 18844 transitions. [2022-07-14 01:43:35,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-14 01:43:35,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:35,241 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:35,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-07-14 01:43:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:43:35,442 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1159378091, now seen corresponding path program 1 times [2022-07-14 01:43:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532898685] [2022-07-14 01:43:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:35,445 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:43:35,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-14 01:43:38,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:38,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-14 01:43:38,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-14 01:43:38,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:38,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:38,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532898685] [2022-07-14 01:43:38,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532898685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:38,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:38,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-14 01:43:38,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666384985] [2022-07-14 01:43:38,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:38,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-14 01:43:38,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:38,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-14 01:43:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-14 01:43:38,922 INFO L87 Difference]: Start difference. First operand 13499 states and 18844 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 01:43:41,481 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-14 01:43:42,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:42,585 INFO L93 Difference]: Finished difference Result 31509 states and 44935 transitions. [2022-07-14 01:43:42,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-14 01:43:42,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 388 [2022-07-14 01:43:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:42,644 INFO L225 Difference]: With dead ends: 31509 [2022-07-14 01:43:42,644 INFO L226 Difference]: Without dead ends: 18041 [2022-07-14 01:43:42,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-14 01:43:42,677 INFO L413 NwaCegarLoop]: 2321 mSDtfsCounter, 1275 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 14345 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:42,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 14345 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 01:43:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18041 states. [2022-07-14 01:43:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18041 to 13219. [2022-07-14 01:43:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 9282 states have (on average 1.3200818789054083) internal successors, (12253), 9623 states have internal predecessors, (12253), 3025 states have call successors, (3025), 900 states have call predecessors, (3025), 911 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-14 01:43:43,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 18464 transitions. [2022-07-14 01:43:43,228 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 18464 transitions. Word has length 388 [2022-07-14 01:43:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:43,229 INFO L495 AbstractCegarLoop]: Abstraction has 13219 states and 18464 transitions. [2022-07-14 01:43:43,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-14 01:43:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 18464 transitions. [2022-07-14 01:43:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-14 01:43:43,239 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:43,239 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:43,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-07-14 01:43:43,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:43:43,440 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:43,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash 643551835, now seen corresponding path program 1 times [2022-07-14 01:43:43,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:43,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723344242] [2022-07-14 01:43:43,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:43:43,443 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:43,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:43,444 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:43:43,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-14 01:43:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:43:46,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-14 01:43:46,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 171 proven. 10 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-14 01:43:46,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:43:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 42 proven. 84 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-14 01:43:47,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:47,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723344242] [2022-07-14 01:43:47,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723344242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:43:47,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:43:47,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-14 01:43:47,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812909501] [2022-07-14 01:43:47,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:43:47,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-14 01:43:47,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:47,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-14 01:43:47,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-14 01:43:47,803 INFO L87 Difference]: Start difference. First operand 13219 states and 18464 transitions. Second operand has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:43:49,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:49,982 INFO L93 Difference]: Finished difference Result 26497 states and 37041 transitions. [2022-07-14 01:43:49,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 01:43:49,983 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 389 [2022-07-14 01:43:49,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:50,044 INFO L225 Difference]: With dead ends: 26497 [2022-07-14 01:43:50,044 INFO L226 Difference]: Without dead ends: 13293 [2022-07-14 01:43:50,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-14 01:43:50,086 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 30 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9061 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:50,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9061 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-14 01:43:50,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2022-07-14 01:43:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13283. [2022-07-14 01:43:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 9342 states have (on average 1.320595161635624) internal successors, (12337), 9683 states have internal predecessors, (12337), 3025 states have call successors, (3025), 904 states have call predecessors, (3025), 915 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-14 01:43:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 18548 transitions. [2022-07-14 01:43:50,897 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 18548 transitions. Word has length 389 [2022-07-14 01:43:50,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:43:50,898 INFO L495 AbstractCegarLoop]: Abstraction has 13283 states and 18548 transitions. [2022-07-14 01:43:50,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:43:50,899 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 18548 transitions. [2022-07-14 01:43:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-14 01:43:50,914 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:43:50,914 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:50,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-14 01:43:51,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:43:51,125 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:43:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:43:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -676411589, now seen corresponding path program 2 times [2022-07-14 01:43:51,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:43:51,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834078846] [2022-07-14 01:43:51,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:43:51,129 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:43:51,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:43:51,130 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:43:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-14 01:43:52,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-14 01:43:52,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:43:52,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-14 01:43:52,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:43:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-14 01:43:53,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-14 01:43:53,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:43:53,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834078846] [2022-07-14 01:43:53,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834078846] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-14 01:43:53,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-14 01:43:53,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-14 01:43:53,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065522328] [2022-07-14 01:43:53,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-14 01:43:53,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-14 01:43:53,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:43:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-14 01:43:53,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-14 01:43:53,106 INFO L87 Difference]: Start difference. First operand 13283 states and 18548 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-14 01:43:58,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:43:58,893 INFO L93 Difference]: Finished difference Result 42136 states and 59309 transitions. [2022-07-14 01:43:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-14 01:43:58,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 407 [2022-07-14 01:43:58,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:43:59,051 INFO L225 Difference]: With dead ends: 42136 [2022-07-14 01:43:59,051 INFO L226 Difference]: Without dead ends: 28884 [2022-07-14 01:43:59,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-14 01:43:59,123 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 2310 mSDsluCounter, 20515 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 23266 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:43:59,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 23266 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-14 01:43:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28884 states. [2022-07-14 01:44:00,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28884 to 26475. [2022-07-14 01:44:00,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26475 states, 18594 states have (on average 1.3216629020114015) internal successors, (24575), 19295 states have internal predecessors, (24575), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-14 01:44:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26475 states to 26475 states and 37014 transitions. [2022-07-14 01:44:00,458 INFO L78 Accepts]: Start accepts. Automaton has 26475 states and 37014 transitions. Word has length 407 [2022-07-14 01:44:00,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:44:00,459 INFO L495 AbstractCegarLoop]: Abstraction has 26475 states and 37014 transitions. [2022-07-14 01:44:00,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-14 01:44:00,459 INFO L276 IsEmpty]: Start isEmpty. Operand 26475 states and 37014 transitions. [2022-07-14 01:44:00,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-14 01:44:00,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:44:00,490 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:00,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-14 01:44:00,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:44:00,712 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:44:00,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:44:00,712 INFO L85 PathProgramCache]: Analyzing trace with hash 217074749, now seen corresponding path program 1 times [2022-07-14 01:44:00,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:44:00,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129563692] [2022-07-14 01:44:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-14 01:44:00,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:44:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:44:00,716 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:44:00,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-14 01:44:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-14 01:44:04,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-14 01:44:04,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:44:04,814 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 453 proven. 55 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-07-14 01:44:04,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:44:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 72 proven. 321 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-14 01:44:07,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:44:07,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129563692] [2022-07-14 01:44:07,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129563692] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:44:07,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:44:07,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-14 01:44:07,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895758299] [2022-07-14 01:44:07,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:44:07,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-14 01:44:07,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:44:07,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-14 01:44:07,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-14 01:44:07,197 INFO L87 Difference]: Start difference. First operand 26475 states and 37014 transitions. Second operand has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:44:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:44:15,726 INFO L93 Difference]: Finished difference Result 53369 states and 74677 transitions. [2022-07-14 01:44:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-14 01:44:15,727 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 407 [2022-07-14 01:44:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:44:15,895 INFO L225 Difference]: With dead ends: 53369 [2022-07-14 01:44:15,895 INFO L226 Difference]: Without dead ends: 26701 [2022-07-14 01:44:15,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-14 01:44:15,993 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 148 mSDsluCounter, 16662 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 18180 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-14 01:44:15,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 18180 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-14 01:44:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26701 states. [2022-07-14 01:44:17,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26701 to 26667. [2022-07-14 01:44:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26667 states, 18786 states have (on average 1.3162461407431065) internal successors, (24727), 19487 states have internal predecessors, (24727), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-14 01:44:17,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26667 states to 26667 states and 37166 transitions. [2022-07-14 01:44:17,256 INFO L78 Accepts]: Start accepts. Automaton has 26667 states and 37166 transitions. Word has length 407 [2022-07-14 01:44:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:44:17,256 INFO L495 AbstractCegarLoop]: Abstraction has 26667 states and 37166 transitions. [2022-07-14 01:44:17,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:44:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 26667 states and 37166 transitions. [2022-07-14 01:44:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-07-14 01:44:17,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:44:17,283 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:17,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-14 01:44:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:44:17,487 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:44:17,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:44:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1470402045, now seen corresponding path program 2 times [2022-07-14 01:44:17,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:44:17,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976685489] [2022-07-14 01:44:17,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-14 01:44:17,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:44:17,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:44:17,491 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:44:17,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-14 01:45:03,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-14 01:45:03,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-14 01:45:03,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 3904 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-14 01:45:03,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-14 01:45:06,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1449 proven. 253 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-07-14 01:45:06,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-14 01:45:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 132 proven. 1335 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2022-07-14 01:45:14,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-14 01:45:14,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976685489] [2022-07-14 01:45:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976685489] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-14 01:45:14,602 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-14 01:45:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-14 01:45:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708826272] [2022-07-14 01:45:14,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-14 01:45:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-14 01:45:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-14 01:45:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-14 01:45:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-14 01:45:14,606 INFO L87 Difference]: Start difference. First operand 26667 states and 37166 transitions. Second operand has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:45:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-14 01:45:55,382 INFO L93 Difference]: Finished difference Result 54185 states and 75629 transitions. [2022-07-14 01:45:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-14 01:45:55,383 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 443 [2022-07-14 01:45:55,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-14 01:45:55,524 INFO L225 Difference]: With dead ends: 54185 [2022-07-14 01:45:55,524 INFO L226 Difference]: Without dead ends: 27133 [2022-07-14 01:45:55,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-14 01:45:55,635 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 626 mSDsluCounter, 41136 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 42666 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-14 01:45:55,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 42666 Invalid, 2873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [352 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-07-14 01:45:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27133 states. [2022-07-14 01:45:56,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27133 to 27051. [2022-07-14 01:45:56,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27051 states, 19170 states have (on average 1.3099113197704746) internal successors, (25111), 19871 states have internal predecessors, (25111), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-14 01:45:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27051 states to 27051 states and 37550 transitions. [2022-07-14 01:45:56,742 INFO L78 Accepts]: Start accepts. Automaton has 27051 states and 37550 transitions. Word has length 443 [2022-07-14 01:45:56,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-14 01:45:56,743 INFO L495 AbstractCegarLoop]: Abstraction has 27051 states and 37550 transitions. [2022-07-14 01:45:56,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-14 01:45:56,743 INFO L276 IsEmpty]: Start isEmpty. Operand 27051 states and 37550 transitions. [2022-07-14 01:45:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-07-14 01:45:56,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-14 01:45:56,766 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:45:56,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-14 01:45:56,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-14 01:45:56,967 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-14 01:45:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-14 01:45:56,967 INFO L85 PathProgramCache]: Analyzing trace with hash -970034819, now seen corresponding path program 3 times [2022-07-14 01:45:56,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-14 01:45:56,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293746994] [2022-07-14 01:45:56,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-14 01:45:56,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-14 01:45:56,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-14 01:45:56,971 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-14 01:45:56,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process