./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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-43_2a-drivers--atm--nicstar.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:02:42,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:02:42,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:02:43,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:02:43,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:02:43,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:02:43,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:02:43,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:02:43,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:02:43,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:02:43,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:02:43,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:02:43,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:02:43,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:02:43,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:02:43,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:02:43,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:02:43,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:02:43,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:02:43,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:02:43,042 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:02:43,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:02:43,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:02:43,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:02:43,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:02:43,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:02:43,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:02:43,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:02:43,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:02:43,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:02:43,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:02:43,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:02:43,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:02:43,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:02:43,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:02:43,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:02:43,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:02:43,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:02:43,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:02:43,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:02:43,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:02:43,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:02:43,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 14:02:43,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:02:43,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:02:43,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:02:43,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:02:43,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:02:43,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:02:43,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:02:43,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:02:43,088 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:02:43,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:02:43,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:02:43,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:02:43,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:02:43,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:02:43,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:02:43,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:02:43,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:02:43,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:02:43,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:02:43,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:02:43,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 14:02:43,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 14:02:43,091 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:02:43,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:02:43,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:02:43,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-12 14:02:43,293 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:02:43,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:02:43,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:02:43,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:02:43,321 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:02:43,322 INFO L432 ainManager$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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-12 14:02:43,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13152bc11/7ab3ca26435e49db98a9580787059534/FLAG22525c4e7 [2022-07-12 14:02:43,968 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:02:43,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-12 14:02:44,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13152bc11/7ab3ca26435e49db98a9580787059534/FLAG22525c4e7 [2022-07-12 14:02:44,398 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13152bc11/7ab3ca26435e49db98a9580787059534 [2022-07-12 14:02:44,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:02:44,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:02:44,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:02:44,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:02:44,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:02:44,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:02:44" (1/1) ... [2022-07-12 14:02:44,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c090a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:44, skipping insertion in model container [2022-07-12 14:02:44,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:02:44" (1/1) ... [2022-07-12 14:02:44,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:02:44,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:02:46,162 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-12 14:02:46,212 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-12 14:02:46,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:02:46,251 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:02:46,498 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-12 14:02:46,503 INFO L158 Benchmark]: Toolchain (without parser) took 2098.29ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 61.1MB in the beginning and 65.6MB in the end (delta: -4.6MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. [2022-07-12 14:02:46,504 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 14:02:46,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2095.74ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 60.8MB in the beginning and 65.6MB in the end (delta: -4.8MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. [2022-07-12 14:02:46,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 62.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2095.74ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 60.8MB in the beginning and 65.6MB in the end (delta: -4.8MB). Peak memory consumption was 68.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.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 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:02:48,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:02:48,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:02:48,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:02:48,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:02:48,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:02:48,128 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:02:48,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:02:48,131 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:02:48,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:02:48,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:02:48,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:02:48,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:02:48,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:02:48,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:02:48,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:02:48,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:02:48,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:02:48,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:02:48,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:02:48,141 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:02:48,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:02:48,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:02:48,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:02:48,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:02:48,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:02:48,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:02:48,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:02:48,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:02:48,158 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:02:48,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:02:48,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:02:48,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:02:48,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:02:48,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:02:48,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:02:48,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:02:48,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:02:48,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:02:48,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:02:48,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:02:48,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:02:48,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 14:02:48,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:02:48,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:02:48,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:02:48,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:02:48,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:02:48,196 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:02:48,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:02:48,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:02:48,197 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:02:48,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:02:48,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:02:48,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:02:48,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:02:48,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:02:48,198 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 14:02:48,219 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 14:02:48,219 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 14:02:48,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:02:48,219 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:02:48,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:02:48,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:02:48,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 14:02:48,220 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 14:02:48,221 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:02:48,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:02:48,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:02:48,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 14:02:48,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-12 14:02:48,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:02:48,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:02:48,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:02:48,503 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:02:48,503 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:02:48,504 INFO L432 ainManager$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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-12 14:02:48,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55fe69b24/69de0cf867fc419e9830514d4c2b91c4/FLAG1c6b2b689 [2022-07-12 14:02:49,183 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:02:49,184 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-12 14:02:49,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55fe69b24/69de0cf867fc419e9830514d4c2b91c4/FLAG1c6b2b689 [2022-07-12 14:02:49,334 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55fe69b24/69de0cf867fc419e9830514d4c2b91c4 [2022-07-12 14:02:49,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:02:49,337 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:02:49,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:02:49,340 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:02:49,343 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:02:49,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:02:49" (1/1) ... [2022-07-12 14:02:49,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ee037a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:49, skipping insertion in model container [2022-07-12 14:02:49,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:02:49" (1/1) ... [2022-07-12 14:02:49,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:02:49,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:02:51,031 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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-12 14:02:51,071 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-12 14:02:51,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:02:51,113 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 14:02:51,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:02:51,419 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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-12 14:02:51,426 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-12 14:02:51,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:02:51,445 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:02:51,715 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-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-12 14:02:51,717 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-12 14:02:51,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:02:51,812 INFO L208 MainTranslator]: Completed translation [2022-07-12 14:02:51,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51 WrapperNode [2022-07-12 14:02:51,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 14:02:51,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 14:02:51,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 14:02:51,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 14:02:51,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:51,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,026 INFO L137 Inliner]: procedures = 266, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 5915 [2022-07-12 14:02:52,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 14:02:52,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 14:02:52,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 14:02:52,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 14:02:52,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,218 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 14:02:52,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 14:02:52,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 14:02:52,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 14:02:52,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (1/1) ... [2022-07-12 14:02:52,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:02:52,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 14:02:52,320 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) [2022-07-12 14:02:52,339 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 [2022-07-12 14:02:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2022-07-12 14:02:52,353 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2022-07-12 14:02:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 14:02:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 14:02:52,353 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-12 14:02:52,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2022-07-12 14:02:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-12 14:02:52,354 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 14:02:52,354 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 14:02:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 14:02:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 14:02:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 14:02:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-12 14:02:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-12 14:02:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2022-07-12 14:02:52,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2022-07-12 14:02:52,355 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-12 14:02:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-12 14:02:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-12 14:02:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-12 14:02:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2022-07-12 14:02:52,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2022-07-12 14:02:52,356 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2022-07-12 14:02:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2022-07-12 14:02:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 14:02:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 14:02:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2022-07-12 14:02:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2022-07-12 14:02:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-12 14:02:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-12 14:02:52,357 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 14:02:52,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 14:02:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2022-07-12 14:02:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2022-07-12 14:02:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-12 14:02:52,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-12 14:02:52,358 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-12 14:02:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-12 14:02:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-12 14:02:52,359 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-12 14:02:52,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 14:02:52,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 14:02:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 14:02:52,360 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 14:02:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 14:02:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 14:02:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2022-07-12 14:02:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2022-07-12 14:02:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-07-12 14:02:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-07-12 14:02:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 14:02:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 14:02:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 14:02:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2022-07-12 14:02:52,362 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2022-07-12 14:02:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 14:02:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-12 14:02:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-12 14:02:52,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-12 14:02:52,362 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 14:02:52,363 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 14:02:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2022-07-12 14:02:52,363 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2022-07-12 14:02:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 14:02:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 14:02:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 14:02:52,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 14:02:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 14:02:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-12 14:02:52,364 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-12 14:02:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-12 14:02:52,364 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-12 14:02:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 14:02:52,364 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2022-07-12 14:02:52,365 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2022-07-12 14:02:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 14:02:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-12 14:02:52,365 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-12 14:02:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 14:02:52,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 14:02:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-12 14:02:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-12 14:02:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 14:02:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 14:02:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2022-07-12 14:02:52,366 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2022-07-12 14:02:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2022-07-12 14:02:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2022-07-12 14:02:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-12 14:02:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-12 14:02:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 14:02:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 14:02:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-07-12 14:02:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-07-12 14:02:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2022-07-12 14:02:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2022-07-12 14:02:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-12 14:02:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-12 14:02:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-12 14:02:52,368 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-12 14:02:52,368 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-12 14:02:52,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-12 14:02:52,369 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2022-07-12 14:02:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2022-07-12 14:02:52,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 14:02:52,371 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 14:02:52,372 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2022-07-12 14:02:52,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2022-07-12 14:02:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 14:02:52,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-12 14:02:52,373 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-12 14:02:52,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-12 14:02:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2022-07-12 14:02:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2022-07-12 14:02:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-12 14:02:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-12 14:02:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 14:02:52,378 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 14:02:52,378 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-12 14:02:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-12 14:02:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2022-07-12 14:02:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-07-12 14:02:52,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 14:02:52,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-12 14:02:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-12 14:02:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 14:02:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-07-12 14:02:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-07-12 14:02:52,380 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 14:02:52,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-12 14:02:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-12 14:02:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-07-12 14:02:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2022-07-12 14:02:52,381 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2022-07-12 14:02:52,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-12 14:02:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-12 14:02:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 14:02:52,382 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-12 14:02:52,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-07-12 14:02:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-12 14:02:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2022-07-12 14:02:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-12 14:02:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-12 14:02:52,383 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2022-07-12 14:02:52,383 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2022-07-12 14:02:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2022-07-12 14:02:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2022-07-12 14:02:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-12 14:02:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-12 14:02:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2022-07-12 14:02:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2022-07-12 14:02:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-12 14:02:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-12 14:02:52,384 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-12 14:02:52,384 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-12 14:02:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-12 14:02:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-12 14:02:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2022-07-12 14:02:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2022-07-12 14:02:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-12 14:02:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-12 14:02:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-12 14:02:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-12 14:02:52,385 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-12 14:02:52,385 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2022-07-12 14:02:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-12 14:02:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 14:02:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-12 14:02:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-12 14:02:52,386 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-12 14:02:52,386 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-12 14:02:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 14:02:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 14:02:52,387 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-12 14:02:52,387 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-12 14:02:52,999 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 14:02:53,002 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 14:02:56,317 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 14:03:48,440 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 14:03:48,453 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 14:03:48,453 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 14:03:48,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:03:48 BoogieIcfgContainer [2022-07-12 14:03:48,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 14:03:48,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 14:03:48,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 14:03:48,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 14:03:48,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:02:49" (1/3) ... [2022-07-12 14:03:48,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c25d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:03:48, skipping insertion in model container [2022-07-12 14:03:48,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:02:51" (2/3) ... [2022-07-12 14:03:48,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c25d05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:03:48, skipping insertion in model container [2022-07-12 14:03:48,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:03:48" (3/3) ... [2022-07-12 14:03:48,463 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-12 14:03:48,473 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 14:03:48,473 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 14:03:48,545 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 14:03:48,551 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@62e2d69e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60eedb87 [2022-07-12 14:03:48,552 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 14:03:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) [2022-07-12 14:03:48,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 14:03:48,593 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:48,594 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:48,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:48,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:48,598 INFO L85 PathProgramCache]: Analyzing trace with hash 703457863, now seen corresponding path program 1 times [2022-07-12 14:03:48,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:48,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571692780] [2022-07-12 14:03:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:48,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:48,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:48,615 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) [2022-07-12 14:03:48,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 14:03:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:49,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 14:03:49,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 14:03:49,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:03:49,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:49,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571692780] [2022-07-12 14:03:49,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571692780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:03:49,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:03:49,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:03:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297696709] [2022-07-12 14:03:49,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:03:49,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 14:03:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:49,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 14:03:49,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 14:03:49,742 INFO L87 Difference]: Start difference. First operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:03:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:49,886 INFO L93 Difference]: Finished difference Result 4041 states and 6043 transitions. [2022-07-12 14:03:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 14:03:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-07-12 14:03:49,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:49,919 INFO L225 Difference]: With dead ends: 4041 [2022-07-12 14:03:49,920 INFO L226 Difference]: Without dead ends: 1993 [2022-07-12 14:03:49,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 14:03:49,943 INFO L413 NwaCegarLoop]: 2953 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, 2953 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 [2022-07-12 14:03:49,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:03:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2022-07-12 14:03:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2022-07-12 14:03:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1345 states have (on average 1.3405204460966542) internal successors, (1803), 1406 states have internal predecessors, (1803), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-12 14:03:50,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2022-07-12 14:03:50,080 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2022-07-12 14:03:50,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:50,080 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2022-07-12 14:03:50,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:03:50,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2022-07-12 14:03:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 14:03:50,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:50,084 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:50,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:50,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:50,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:50,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:50,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1341829763, now seen corresponding path program 1 times [2022-07-12 14:03:50,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:50,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821199453] [2022-07-12 14:03:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:50,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:50,312 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) [2022-07-12 14:03:50,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 14:03:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:51,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:03:51,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:51,673 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-12 14:03:51,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:03:51,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:51,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821199453] [2022-07-12 14:03:51,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821199453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:03:51,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:03:51,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:03:51,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160506830] [2022-07-12 14:03:51,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:03:51,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:03:51,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:51,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:03:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:03:51,677 INFO L87 Difference]: Start difference. First operand 1993 states and 2920 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 14:03:52,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:52,196 INFO L93 Difference]: Finished difference Result 3978 states and 5831 transitions. [2022-07-12 14:03:52,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:03:52,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 149 [2022-07-12 14:03:52,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:52,208 INFO L225 Difference]: With dead ends: 3978 [2022-07-12 14:03:52,208 INFO L226 Difference]: Without dead ends: 1994 [2022-07-12 14:03:52,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:03:52,219 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 6 mSDsluCounter, 11634 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:52,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:03:52,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-07-12 14:03:52,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1994. [2022-07-12 14:03:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1346 states have (on average 1.3402674591381871) internal successors, (1804), 1407 states have internal predecessors, (1804), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-12 14:03:52,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2921 transitions. [2022-07-12 14:03:52,279 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2921 transitions. Word has length 149 [2022-07-12 14:03:52,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:52,281 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2921 transitions. [2022-07-12 14:03:52,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 14:03:52,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2921 transitions. [2022-07-12 14:03:52,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 14:03:52,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:52,283 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:52,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:52,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:52,499 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:52,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:52,500 INFO L85 PathProgramCache]: Analyzing trace with hash -899632067, now seen corresponding path program 1 times [2022-07-12 14:03:52,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:52,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020609991] [2022-07-12 14:03:52,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:52,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:52,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:52,518 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) [2022-07-12 14:03:52,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 14:03:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:53,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:03:53,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-12 14:03:53,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:03:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-12 14:03:54,991 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:54,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020609991] [2022-07-12 14:03:54,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020609991] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:03:54,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:03:54,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-12 14:03:54,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687511756] [2022-07-12 14:03:54,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:03:54,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 14:03:54,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:54,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 14:03:54,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 14:03:54,993 INFO L87 Difference]: Start difference. First operand 1994 states and 2921 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 14:03:55,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:55,964 INFO L93 Difference]: Finished difference Result 3990 states and 5847 transitions. [2022-07-12 14:03:55,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 14:03:55,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2022-07-12 14:03:55,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:55,983 INFO L225 Difference]: With dead ends: 3990 [2022-07-12 14:03:55,984 INFO L226 Difference]: Without dead ends: 2010 [2022-07-12 14:03:55,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-12 14:03:55,996 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 12 mSDsluCounter, 11640 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14555 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:55,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14555 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 14:03:56,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-12 14:03:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-07-12 14:03:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1357 states have (on average 1.3382461311717022) internal successors, (1816), 1418 states have internal predecessors, (1816), 561 states have call successors, (561), 92 states have call predecessors, (561), 91 states have return successors, (560), 549 states have call predecessors, (560), 560 states have call successors, (560) [2022-07-12 14:03:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2937 transitions. [2022-07-12 14:03:56,059 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2937 transitions. Word has length 153 [2022-07-12 14:03:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:56,060 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2937 transitions. [2022-07-12 14:03:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 14:03:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2937 transitions. [2022-07-12 14:03:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-12 14:03:56,065 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:56,065 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:56,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:56,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:56,279 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:56,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:56,280 INFO L85 PathProgramCache]: Analyzing trace with hash -437318811, now seen corresponding path program 2 times [2022-07-12 14:03:56,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:56,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617774210] [2022-07-12 14:03:56,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:03:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:56,285 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) [2022-07-12 14:03:56,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 14:03:56,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:03:56,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:03:57,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:03:57,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-12 14:03:57,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:03:57,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617774210] [2022-07-12 14:03:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617774210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:03:57,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:03:57,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:03:57,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691261985] [2022-07-12 14:03:57,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:03:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:03:57,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:03:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:03:57,118 INFO L87 Difference]: Start difference. First operand 2010 states and 2937 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 14:03:57,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:57,383 INFO L93 Difference]: Finished difference Result 5482 states and 7998 transitions. [2022-07-12 14:03:57,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:03:57,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 156 [2022-07-12 14:03:57,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:57,404 INFO L225 Difference]: With dead ends: 5482 [2022-07-12 14:03:57,404 INFO L226 Difference]: Without dead ends: 3509 [2022-07-12 14:03:57,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:03:57,417 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 2194 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 6313 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:57,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 6313 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:03:57,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-12 14:03:57,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3505. [2022-07-12 14:03:57,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2376 states have (on average 1.3434343434343434) internal successors, (3192), 2486 states have internal predecessors, (3192), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-12 14:03:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5103 transitions. [2022-07-12 14:03:57,534 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5103 transitions. Word has length 156 [2022-07-12 14:03:57,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:57,535 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 5103 transitions. [2022-07-12 14:03:57,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-12 14:03:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5103 transitions. [2022-07-12 14:03:57,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-12 14:03:57,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:57,537 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:57,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:57,755 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1645701321, now seen corresponding path program 1 times [2022-07-12 14:03:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:57,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1000370418] [2022-07-12 14:03:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:57,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:57,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:57,758 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) [2022-07-12 14:03:57,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 14:03:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:58,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:03:58,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:59,207 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-12 14:03:59,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:00,573 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-12 14:04:00,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:00,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1000370418] [2022-07-12 14:04:00,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1000370418] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:00,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:00,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 14:04:00,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315580655] [2022-07-12 14:04:00,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:00,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 14:04:00,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:00,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 14:04:00,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-12 14:04:00,576 INFO L87 Difference]: Start difference. First operand 3505 states and 5103 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 14:04:01,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:01,860 INFO L93 Difference]: Finished difference Result 6993 states and 10187 transitions. [2022-07-12 14:04:01,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 14:04:01,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 163 [2022-07-12 14:04:01,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:01,878 INFO L225 Difference]: With dead ends: 6993 [2022-07-12 14:04:01,878 INFO L226 Difference]: Without dead ends: 3507 [2022-07-12 14:04:01,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-12 14:04:01,894 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 23 mSDsluCounter, 14556 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:01,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17472 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 14:04:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-12 14:04:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-12 14:04:01,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 2378 states have (on average 1.3431455004205215) internal successors, (3194), 2488 states have internal predecessors, (3194), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-12 14:04:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5105 transitions. [2022-07-12 14:04:01,990 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5105 transitions. Word has length 163 [2022-07-12 14:04:01,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:01,991 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5105 transitions. [2022-07-12 14:04:01,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 14:04:01,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5105 transitions. [2022-07-12 14:04:01,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-12 14:04:01,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:01,994 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:02,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:02,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:02,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1465862159, now seen corresponding path program 2 times [2022-07-12 14:04:02,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:02,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113485867] [2022-07-12 14:04:02,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:04:02,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:02,215 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) [2022-07-12 14:04:02,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 14:04:03,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:04:03,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:03,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:04:03,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:03,123 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-12 14:04:03,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:04:03,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:03,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113485867] [2022-07-12 14:04:03,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113485867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:04:03,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:04:03,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:04:03,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074048115] [2022-07-12 14:04:03,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:04:03,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:04:03,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:03,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:04:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:04:03,125 INFO L87 Difference]: Start difference. First operand 3507 states and 5105 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 14:04:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:03,592 INFO L93 Difference]: Finished difference Result 9567 states and 13917 transitions. [2022-07-12 14:04:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:04:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-07-12 14:04:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:03,623 INFO L225 Difference]: With dead ends: 9567 [2022-07-12 14:04:03,624 INFO L226 Difference]: Without dead ends: 6118 [2022-07-12 14:04:03,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:04:03,642 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2353 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:03,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 6148 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:04:03,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2022-07-12 14:04:03,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 6111. [2022-07-12 14:04:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6111 states, 4131 states have (on average 1.3340595497458243) internal successors, (5511), 4325 states have internal predecessors, (5511), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-12 14:04:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 8871 transitions. [2022-07-12 14:04:03,850 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 8871 transitions. Word has length 166 [2022-07-12 14:04:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:03,850 INFO L495 AbstractCegarLoop]: Abstraction has 6111 states and 8871 transitions. [2022-07-12 14:04:03,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 14:04:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 8871 transitions. [2022-07-12 14:04:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-12 14:04:03,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:03,854 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:03,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:04,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:04,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:04,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:04,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1108897071, now seen corresponding path program 1 times [2022-07-12 14:04:04,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:04,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401313546] [2022-07-12 14:04:04,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:04:04,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:04,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:04,082 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) [2022-07-12 14:04:04,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 14:04:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:04:05,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 14:04:05,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:05,613 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-12 14:04:05,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-12 14:04:07,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:07,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401313546] [2022-07-12 14:04:07,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401313546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:07,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:07,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-12 14:04:07,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865068600] [2022-07-12 14:04:07,468 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:07,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 14:04:07,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:07,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 14:04:07,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-12 14:04:07,469 INFO L87 Difference]: Start difference. First operand 6111 states and 8871 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-12 14:04:09,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:09,030 INFO L93 Difference]: Finished difference Result 12208 states and 17727 transitions. [2022-07-12 14:04:09,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 14:04:09,032 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 182 [2022-07-12 14:04:09,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:09,074 INFO L225 Difference]: With dead ends: 12208 [2022-07-12 14:04:09,075 INFO L226 Difference]: Without dead ends: 6114 [2022-07-12 14:04:09,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-12 14:04:09,099 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 21 mSDsluCounter, 23290 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26206 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:09,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26206 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 14:04:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2022-07-12 14:04:09,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 6114. [2022-07-12 14:04:09,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 4134 states have (on average 1.3338171262699565) internal successors, (5514), 4328 states have internal predecessors, (5514), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-12 14:04:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 8874 transitions. [2022-07-12 14:04:09,308 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 8874 transitions. Word has length 182 [2022-07-12 14:04:09,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:09,308 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 8874 transitions. [2022-07-12 14:04:09,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-12 14:04:09,308 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 8874 transitions. [2022-07-12 14:04:09,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 14:04:09,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:09,311 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:09,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:09,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:09,527 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:09,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:09,528 INFO L85 PathProgramCache]: Analyzing trace with hash 631131437, now seen corresponding path program 1 times [2022-07-12 14:04:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:09,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211025831] [2022-07-12 14:04:09,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:04:09,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:09,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:09,530 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) [2022-07-12 14:04:09,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 14:04:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:04:10,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 14:04:10,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-12 14:04:11,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-12 14:04:13,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211025831] [2022-07-12 14:04:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211025831] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:13,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:13,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-12 14:04:13,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447734880] [2022-07-12 14:04:13,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:13,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-12 14:04:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-12 14:04:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-12 14:04:13,359 INFO L87 Difference]: Start difference. First operand 6114 states and 8874 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:15,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:15,144 INFO L93 Difference]: Finished difference Result 12220 states and 17741 transitions. [2022-07-12 14:04:15,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 14:04:15,146 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 188 [2022-07-12 14:04:15,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:15,173 INFO L225 Difference]: With dead ends: 12220 [2022-07-12 14:04:15,173 INFO L226 Difference]: Without dead ends: 6125 [2022-07-12 14:04:15,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-12 14:04:15,196 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 42 mSDsluCounter, 23285 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 26199 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:15,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 26199 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 14:04:15,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2022-07-12 14:04:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6125. [2022-07-12 14:04:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6125 states, 4144 states have (on average 1.3334942084942085) internal successors, (5526), 4338 states have internal predecessors, (5526), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-12 14:04:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 8886 transitions. [2022-07-12 14:04:15,380 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 8886 transitions. Word has length 188 [2022-07-12 14:04:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:15,381 INFO L495 AbstractCegarLoop]: Abstraction has 6125 states and 8886 transitions. [2022-07-12 14:04:15,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 8886 transitions. [2022-07-12 14:04:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 14:04:15,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:15,385 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:15,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:15,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:15,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:15,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:15,620 INFO L85 PathProgramCache]: Analyzing trace with hash 141595824, now seen corresponding path program 1 times [2022-07-12 14:04:15,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:15,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635576357] [2022-07-12 14:04:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:04:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:15,622 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) [2022-07-12 14:04:15,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 14:04:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:04:16,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 14:04:16,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 156 proven. 15 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-12 14:04:17,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-12 14:04:20,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635576357] [2022-07-12 14:04:20,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635576357] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:20,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:20,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-12 14:04:20,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644832013] [2022-07-12 14:04:20,193 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:20,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 14:04:20,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:20,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 14:04:20,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-12 14:04:20,195 INFO L87 Difference]: Start difference. First operand 6125 states and 8886 transitions. Second operand has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:22,398 INFO L93 Difference]: Finished difference Result 12215 states and 17732 transitions. [2022-07-12 14:04:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 14:04:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2022-07-12 14:04:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:22,427 INFO L225 Difference]: With dead ends: 12215 [2022-07-12 14:04:22,427 INFO L226 Difference]: Without dead ends: 6128 [2022-07-12 14:04:22,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-12 14:04:22,484 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 26193 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 29107 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:22,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 29107 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 14:04:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2022-07-12 14:04:22,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6128. [2022-07-12 14:04:22,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 4147 states have (on average 1.333252953942609) internal successors, (5529), 4341 states have internal predecessors, (5529), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-12 14:04:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8889 transitions. [2022-07-12 14:04:22,643 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8889 transitions. Word has length 189 [2022-07-12 14:04:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:22,645 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8889 transitions. [2022-07-12 14:04:22,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8889 transitions. [2022-07-12 14:04:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 14:04:22,648 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:22,648 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:22,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:22,874 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1302833676, now seen corresponding path program 2 times [2022-07-12 14:04:22,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892344633] [2022-07-12 14:04:22,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:04:22,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:22,877 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) [2022-07-12 14:04:22,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 14:04:23,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:04:23,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:23,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:04:23,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-12 14:04:25,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:04:25,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:25,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892344633] [2022-07-12 14:04:25,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1892344633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:04:25,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:04:25,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:04:25,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981231758] [2022-07-12 14:04:25,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:04:25,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:04:25,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:04:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:04:25,371 INFO L87 Difference]: Start difference. First operand 6128 states and 8889 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:26,013 INFO L93 Difference]: Finished difference Result 18288 states and 26689 transitions. [2022-07-12 14:04:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:04:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-12 14:04:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:26,072 INFO L225 Difference]: With dead ends: 18288 [2022-07-12 14:04:26,072 INFO L226 Difference]: Without dead ends: 12229 [2022-07-12 14:04:26,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:04:26,106 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2890 mSDsluCounter, 11009 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 15080 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:26,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 15080 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:04:26,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-07-12 14:04:26,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12214. [2022-07-12 14:04:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12214 states, 8268 states have (on average 1.332970488630866) internal successors, (11021), 8660 states have internal predecessors, (11021), 3335 states have call successors, (3335), 607 states have call predecessors, (3335), 610 states have return successors, (3428), 3242 states have call predecessors, (3428), 3334 states have call successors, (3428) [2022-07-12 14:04:26,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12214 states to 12214 states and 17784 transitions. [2022-07-12 14:04:26,503 INFO L78 Accepts]: Start accepts. Automaton has 12214 states and 17784 transitions. Word has length 191 [2022-07-12 14:04:26,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:26,504 INFO L495 AbstractCegarLoop]: Abstraction has 12214 states and 17784 transitions. [2022-07-12 14:04:26,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:26,504 INFO L276 IsEmpty]: Start isEmpty. Operand 12214 states and 17784 transitions. [2022-07-12 14:04:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 14:04:26,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:26,507 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:26,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:26,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:26,723 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:26,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:26,724 INFO L85 PathProgramCache]: Analyzing trace with hash -261359955, now seen corresponding path program 2 times [2022-07-12 14:04:26,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:26,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359317022] [2022-07-12 14:04:26,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:04:26,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:26,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:26,727 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) [2022-07-12 14:04:26,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 14:04:27,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:04:27,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:27,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:04:27,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:29,161 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-12 14:04:29,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:04:29,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:29,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359317022] [2022-07-12 14:04:29,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359317022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:04:29,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:04:29,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:04:29,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059582654] [2022-07-12 14:04:29,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:04:29,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:04:29,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:04:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:04:29,163 INFO L87 Difference]: Start difference. First operand 12214 states and 17784 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:30,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:30,038 INFO L93 Difference]: Finished difference Result 36568 states and 53502 transitions. [2022-07-12 14:04:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:04:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-12 14:04:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:30,147 INFO L225 Difference]: With dead ends: 36568 [2022-07-12 14:04:30,148 INFO L226 Difference]: Without dead ends: 24423 [2022-07-12 14:04:30,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:04:30,200 INFO L413 NwaCegarLoop]: 3490 mSDtfsCounter, 2891 mSDsluCounter, 9847 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 13337 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:30,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2891 Valid, 13337 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:04:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2022-07-12 14:04:30,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24396. [2022-07-12 14:04:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24396 states, 16520 states have (on average 1.3325665859564164) internal successors, (22014), 17304 states have internal predecessors, (22014), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-12 14:04:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 35615 transitions. [2022-07-12 14:04:31,132 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 35615 transitions. Word has length 192 [2022-07-12 14:04:31,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:31,133 INFO L495 AbstractCegarLoop]: Abstraction has 24396 states and 35615 transitions. [2022-07-12 14:04:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:31,133 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 35615 transitions. [2022-07-12 14:04:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-12 14:04:31,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:31,136 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:31,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:31,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:31,352 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 304099754, now seen corresponding path program 1 times [2022-07-12 14:04:31,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:31,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943458567] [2022-07-12 14:04:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:04:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:31,355 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) [2022-07-12 14:04:31,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 14:04:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:04:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 14:04:32,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:33,610 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 183 proven. 21 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-12 14:04:33,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-12 14:04:36,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:36,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943458567] [2022-07-12 14:04:36,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943458567] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:36,763 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:36,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-12 14:04:36,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181624192] [2022-07-12 14:04:36,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:36,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 14:04:36,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 14:04:36,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-12 14:04:36,765 INFO L87 Difference]: Start difference. First operand 24396 states and 35615 transitions. Second operand has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:39,956 INFO L93 Difference]: Finished difference Result 48775 states and 71214 transitions. [2022-07-12 14:04:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 14:04:39,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2022-07-12 14:04:39,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:40,057 INFO L225 Difference]: With dead ends: 48775 [2022-07-12 14:04:40,058 INFO L226 Difference]: Without dead ends: 24405 [2022-07-12 14:04:40,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-12 14:04:40,149 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 37832 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40746 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:40,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40746 Invalid, 311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 14:04:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24405 states. [2022-07-12 14:04:41,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24405 to 24405. [2022-07-12 14:04:41,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24405 states, 16529 states have (on average 1.3323855042652308) internal successors, (22023), 17313 states have internal predecessors, (22023), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-12 14:04:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24405 states to 24405 states and 35624 transitions. [2022-07-12 14:04:41,610 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 35624 transitions. Word has length 190 [2022-07-12 14:04:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:41,610 INFO L495 AbstractCegarLoop]: Abstraction has 24405 states and 35624 transitions. [2022-07-12 14:04:41,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 14:04:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 35624 transitions. [2022-07-12 14:04:41,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-12 14:04:41,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:41,613 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:41,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:41,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:41,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -35486458, now seen corresponding path program 2 times [2022-07-12 14:04:41,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:41,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053918736] [2022-07-12 14:04:41,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:04:41,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:41,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:41,836 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) [2022-07-12 14:04:41,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 14:04:42,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:04:42,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:42,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:04:42,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-12 14:04:44,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:04:44,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:44,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053918736] [2022-07-12 14:04:44,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053918736] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:04:44,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:04:44,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:04:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113704051] [2022-07-12 14:04:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:04:44,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:04:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:04:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:04:44,309 INFO L87 Difference]: Start difference. First operand 24405 states and 35624 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:45,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:45,492 INFO L93 Difference]: Finished difference Result 73191 states and 107286 transitions. [2022-07-12 14:04:45,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:04:45,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-12 14:04:45,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:45,846 INFO L225 Difference]: With dead ends: 73191 [2022-07-12 14:04:45,846 INFO L226 Difference]: Without dead ends: 48856 [2022-07-12 14:04:45,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:04:45,978 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 2889 mSDsluCounter, 11013 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 15086 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:45,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 15086 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:04:46,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48856 states. [2022-07-12 14:04:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48856 to 48805. [2022-07-12 14:04:47,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48805 states, 33061 states have (on average 1.331447929584707) internal successors, (44019), 34629 states have internal predecessors, (44019), 13295 states have call successors, (13295), 2433 states have call predecessors, (13295), 2448 states have return successors, (14070), 12926 states have call predecessors, (14070), 13294 states have call successors, (14070) [2022-07-12 14:04:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48805 states to 48805 states and 71384 transitions. [2022-07-12 14:04:48,000 INFO L78 Accepts]: Start accepts. Automaton has 48805 states and 71384 transitions. Word has length 192 [2022-07-12 14:04:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:48,001 INFO L495 AbstractCegarLoop]: Abstraction has 48805 states and 71384 transitions. [2022-07-12 14:04:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:48,001 INFO L276 IsEmpty]: Start isEmpty. Operand 48805 states and 71384 transitions. [2022-07-12 14:04:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 14:04:48,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:48,003 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:48,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:48,224 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:48,225 INFO L85 PathProgramCache]: Analyzing trace with hash 597209677, now seen corresponding path program 2 times [2022-07-12 14:04:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:48,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323375522] [2022-07-12 14:04:48,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:04:48,226 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:48,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:48,227 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) [2022-07-12 14:04:48,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 14:04:49,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:04:49,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:49,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:04:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-12 14:04:50,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:04:50,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:50,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323375522] [2022-07-12 14:04:50,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323375522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:04:50,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:04:50,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:04:50,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528247698] [2022-07-12 14:04:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:04:50,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:04:50,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:50,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:04:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:04:50,804 INFO L87 Difference]: Start difference. First operand 48805 states and 71384 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:04:53,389 INFO L93 Difference]: Finished difference Result 145775 states and 213997 transitions. [2022-07-12 14:04:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:04:53,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-12 14:04:53,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:04:53,939 INFO L225 Difference]: With dead ends: 145775 [2022-07-12 14:04:53,940 INFO L226 Difference]: Without dead ends: 97040 [2022-07-12 14:04:54,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:04:54,357 INFO L413 NwaCegarLoop]: 4844 mSDtfsCounter, 2890 mSDsluCounter, 12554 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 17398 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:04:54,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 17398 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:04:54,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97040 states. [2022-07-12 14:04:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97040 to 96531. [2022-07-12 14:04:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96531 states, 65361 states have (on average 1.3318339682685394) internal successors, (87050), 68549 states have internal predecessors, (87050), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-12 14:04:57,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96531 states to 96531 states and 141589 transitions. [2022-07-12 14:04:57,953 INFO L78 Accepts]: Start accepts. Automaton has 96531 states and 141589 transitions. Word has length 191 [2022-07-12 14:04:57,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:04:57,954 INFO L495 AbstractCegarLoop]: Abstraction has 96531 states and 141589 transitions. [2022-07-12 14:04:57,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 14:04:57,954 INFO L276 IsEmpty]: Start isEmpty. Operand 96531 states and 141589 transitions. [2022-07-12 14:04:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-12 14:04:57,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:04:57,959 INFO L195 NwaCegarLoop]: trace histogram [19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:04:57,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 14:04:58,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:04:58,178 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:04:58,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:04:58,178 INFO L85 PathProgramCache]: Analyzing trace with hash -132391511, now seen corresponding path program 1 times [2022-07-12 14:04:58,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:04:58,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237319180] [2022-07-12 14:04:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:04:58,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:04:58,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:04:58,182 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) [2022-07-12 14:04:58,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 14:04:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:04:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-12 14:04:59,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:05:00,554 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 282 proven. 28 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-12 14:05:00,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:05:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-12 14:05:04,184 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:05:04,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237319180] [2022-07-12 14:05:04,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237319180] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:05:04,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:05:04,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-12 14:05:04,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705881186] [2022-07-12 14:05:04,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:05:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 14:05:04,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:05:04,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 14:05:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-12 14:05:04,186 INFO L87 Difference]: Start difference. First operand 96531 states and 141589 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 14:05:09,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:05:09,847 INFO L93 Difference]: Finished difference Result 193117 states and 283258 transitions. [2022-07-12 14:05:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 14:05:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2022-07-12 14:05:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:05:10,313 INFO L225 Difference]: With dead ends: 193117 [2022-07-12 14:05:10,313 INFO L226 Difference]: Without dead ends: 96564 [2022-07-12 14:05:10,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-07-12 14:05:10,930 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 56 mSDsluCounter, 32019 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 34933 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 14:05:10,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 34933 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 14:05:11,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96564 states. [2022-07-12 14:05:13,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96564 to 96564. [2022-07-12 14:05:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96564 states, 65394 states have (on average 1.3316665137474386) internal successors, (87083), 68582 states have internal predecessors, (87083), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-12 14:05:14,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96564 states to 96564 states and 141622 transitions. [2022-07-12 14:05:14,453 INFO L78 Accepts]: Start accepts. Automaton has 96564 states and 141622 transitions. Word has length 200 [2022-07-12 14:05:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:05:14,454 INFO L495 AbstractCegarLoop]: Abstraction has 96564 states and 141622 transitions. [2022-07-12 14:05:14,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-12 14:05:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 96564 states and 141622 transitions. [2022-07-12 14:05:14,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 14:05:14,457 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:05:14,457 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:05:14,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 14:05:14,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:05:14,671 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:05:14,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:05:14,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1489063885, now seen corresponding path program 2 times [2022-07-12 14:05:14,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:05:14,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783335164] [2022-07-12 14:05:14,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:05:14,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:05:14,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:05:14,674 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) [2022-07-12 14:05:14,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 14:05:15,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:05:15,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:05:15,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:05:15,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:05:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-12 14:05:17,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:05:17,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:05:17,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783335164] [2022-07-12 14:05:17,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783335164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:05:17,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:05:17,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:05:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590900755] [2022-07-12 14:05:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:05:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:05:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:05:17,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:05:17,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:05:17,368 INFO L87 Difference]: Start difference. First operand 96564 states and 141622 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 14:05:20,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:05:20,219 INFO L93 Difference]: Finished difference Result 150201 states and 220956 transitions. [2022-07-12 14:05:20,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:05:20,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 202 [2022-07-12 14:05:20,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:05:21,331 INFO L225 Difference]: With dead ends: 150201 [2022-07-12 14:05:21,332 INFO L226 Difference]: Without dead ends: 150198 [2022-07-12 14:05:21,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:05:21,419 INFO L413 NwaCegarLoop]: 3588 mSDtfsCounter, 2551 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:05:21,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 5192 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:05:21,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150198 states. [2022-07-12 14:05:25,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150198 to 149018. [2022-07-12 14:05:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149018 states, 99766 states have (on average 1.3251708999057796) internal successors, (132207), 104792 states have internal predecessors, (132207), 40997 states have call successors, (40997), 8213 states have call predecessors, (40997), 8254 states have return successors, (45704), 39460 states have call predecessors, (45704), 40996 states have call successors, (45704) [2022-07-12 14:05:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149018 states to 149018 states and 218908 transitions. [2022-07-12 14:05:26,917 INFO L78 Accepts]: Start accepts. Automaton has 149018 states and 218908 transitions. Word has length 202 [2022-07-12 14:05:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:05:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 149018 states and 218908 transitions. [2022-07-12 14:05:26,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 14:05:26,918 INFO L276 IsEmpty]: Start isEmpty. Operand 149018 states and 218908 transitions. [2022-07-12 14:05:26,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-12 14:05:26,921 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:05:26,921 INFO L195 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-12 14:05:26,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 14:05:27,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:05:27,140 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:05:27,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:05:27,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1630107578, now seen corresponding path program 1 times [2022-07-12 14:05:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:05:27,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045044807] [2022-07-12 14:05:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:05:27,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:05:27,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:05:27,142 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) [2022-07-12 14:05:27,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 14:05:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:05:29,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 14:05:29,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:05:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-12 14:05:31,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:05:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-12 14:05:32,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:05:32,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045044807] [2022-07-12 14:05:32,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045044807] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 14:05:32,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 14:05:32,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2022-07-12 14:05:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952562860] [2022-07-12 14:05:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:05:32,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 14:05:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:05:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 14:05:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:05:32,098 INFO L87 Difference]: Start difference. First operand 149018 states and 218908 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16)