./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:15:22,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:15:22,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:15:22,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:15:22,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:15:22,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:15:22,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:15:22,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:15:22,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:15:22,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:15:22,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:15:22,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:15:22,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:15:22,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:15:22,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:15:22,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:15:22,982 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:15:22,983 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:15:22,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:15:22,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:15:22,991 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:15:22,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:15:22,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:15:22,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:15:22,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:15:22,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:15:23,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:15:23,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:15:23,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:15:23,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:15:23,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:15:23,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:15:23,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:15:23,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:15:23,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:15:23,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:15:23,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:15:23,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:15:23,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:15:23,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:15:23,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:15:23,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:15:23,009 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 23:15:23,027 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:15:23,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:15:23,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:15:23,028 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:15:23,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:15:23,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:15:23,029 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:15:23,029 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:15:23,030 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:15:23,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:15:23,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:15:23,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:15:23,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:15:23,032 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:15:23,032 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:15:23,032 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 23:15:23,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 23:15:23,033 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:15:23,033 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:15:23,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:15:23,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-19 23:15:23,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:15:23,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:15:23,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:15:23,255 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:15:23,256 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:15:23,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-19 23:15:23,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c94fcd5/9996e4b8847a4f5b97af5e4d8e3a99aa/FLAG0d587eb19 [2022-07-19 23:15:23,923 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:15:23,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-19 23:15:23,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c94fcd5/9996e4b8847a4f5b97af5e4d8e3a99aa/FLAG0d587eb19 [2022-07-19 23:15:24,343 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1c94fcd5/9996e4b8847a4f5b97af5e4d8e3a99aa [2022-07-19 23:15:24,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:15:24,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:15:24,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:15:24,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:15:24,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:15:24,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:15:24" (1/1) ... [2022-07-19 23:15:24,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755a65e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:24, skipping insertion in model container [2022-07-19 23:15:24,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:15:24" (1/1) ... [2022-07-19 23:15:24,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:15:24,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:15:25,173 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-19 23:15:25,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:15:25,263 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:15:25,427 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 23:15:25,434 INFO L158 Benchmark]: Toolchain (without parser) took 1086.21ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.3MB in the beginning and 118.7MB in the end (delta: -22.4MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2022-07-19 23:15:25,435 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 111.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 23:15:25,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1072.94ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.0MB in the beginning and 118.7MB in the end (delta: -22.7MB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2022-07-19 23:15:25,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory was 111.7MB in the beginning and 111.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1072.94ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 96.0MB in the beginning and 118.7MB in the end (delta: -22.7MB). Peak memory consumption was 64.6MB. 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 23:15:26,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 23:15:26,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 23:15:26,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 23:15:26,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 23:15:26,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 23:15:26,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 23:15:26,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 23:15:26,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 23:15:26,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 23:15:26,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 23:15:26,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 23:15:26,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 23:15:26,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 23:15:26,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 23:15:26,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 23:15:26,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 23:15:26,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 23:15:26,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 23:15:26,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 23:15:26,973 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 23:15:26,979 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 23:15:26,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 23:15:26,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 23:15:26,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 23:15:26,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 23:15:26,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 23:15:26,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 23:15:26,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 23:15:26,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 23:15:26,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 23:15:26,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 23:15:26,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 23:15:26,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 23:15:26,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 23:15:26,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 23:15:26,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 23:15:26,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 23:15:26,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 23:15:26,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 23:15:26,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 23:15:26,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 23:15:27,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 23:15:27,019 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 23:15:27,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 23:15:27,019 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 23:15:27,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 23:15:27,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 23:15:27,020 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 23:15:27,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 23:15:27,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 23:15:27,021 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 23:15:27,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 23:15:27,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 23:15:27,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 23:15:27,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 23:15:27,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 23:15:27,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 23:15:27,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 23:15:27,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 23:15:27,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 23:15:27,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:15:27,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 23:15:27,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 23:15:27,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 23:15:27,032 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 23:15:27,032 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-19 23:15:27,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 23:15:27,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 23:15:27,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 23:15:27,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 23:15:27,331 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 23:15:27,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-19 23:15:27,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d8afced/c6906305e0e64b58890f32d218d5c0ef/FLAGa29319f7a [2022-07-19 23:15:27,969 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 23:15:27,970 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-19 23:15:28,000 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d8afced/c6906305e0e64b58890f32d218d5c0ef/FLAGa29319f7a [2022-07-19 23:15:28,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8d8afced/c6906305e0e64b58890f32d218d5c0ef [2022-07-19 23:15:28,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 23:15:28,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 23:15:28,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 23:15:28,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 23:15:28,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 23:15:28,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:15:28" (1/1) ... [2022-07-19 23:15:28,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e843e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:28, skipping insertion in model container [2022-07-19 23:15:28,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:15:28" (1/1) ... [2022-07-19 23:15:28,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 23:15:28,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:15:29,079 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-19 23:15:29,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:15:29,179 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-19 23:15:29,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 23:15:29,341 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-19 23:15:29,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:15:29,386 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 23:15:29,513 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-19 23:15:29,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 23:15:29,587 INFO L208 MainTranslator]: Completed translation [2022-07-19 23:15:29,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29 WrapperNode [2022-07-19 23:15:29,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 23:15:29,588 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 23:15:29,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 23:15:29,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 23:15:29,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,756 INFO L137 Inliner]: procedures = 206, calls = 979, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2401 [2022-07-19 23:15:29,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 23:15:29,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 23:15:29,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 23:15:29,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 23:15:29,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 23:15:29,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 23:15:29,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 23:15:29,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 23:15:29,845 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (1/1) ... [2022-07-19 23:15:29,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 23:15:29,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 23:15:29,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 23:15:29,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 23:15:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-19 23:15:29,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-07-19 23:15:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-19 23:15:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 23:15:29,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 23:15:29,900 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-07-19 23:15:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-07-19 23:15:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-07-19 23:15:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-07-19 23:15:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-19 23:15:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-19 23:15:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 23:15:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 23:15:29,901 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-19 23:15:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-07-19 23:15:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-07-19 23:15:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-19 23:15:29,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-19 23:15:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-07-19 23:15:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-19 23:15:29,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-19 23:15:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-07-19 23:15:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-07-19 23:15:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-07-19 23:15:29,904 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-19 23:15:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-19 23:15:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-07-19 23:15:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-07-19 23:15:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-19 23:15:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-19 23:15:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-07-19 23:15:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-07-19 23:15:29,905 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-07-19 23:15:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-07-19 23:15:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-19 23:15:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-19 23:15:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-07-19 23:15:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-07-19 23:15:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-19 23:15:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-19 23:15:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-07-19 23:15:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-07-19 23:15:29,906 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-19 23:15:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-19 23:15:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-07-19 23:15:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-07-19 23:15:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 23:15:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 23:15:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-07-19 23:15:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-07-19 23:15:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-19 23:15:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-07-19 23:15:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-07-19 23:15:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 23:15:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-07-19 23:15:29,908 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-07-19 23:15:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-07-19 23:15:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-07-19 23:15:29,909 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 23:15:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-07-19 23:15:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-07-19 23:15:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-07-19 23:15:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-07-19 23:15:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-07-19 23:15:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-07-19 23:15:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-07-19 23:15:29,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-07-19 23:15:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 23:15:29,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 23:15:30,255 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 23:15:30,256 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 23:15:46,548 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 23:15:46,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 23:15:46,570 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 23:15:46,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:15:46 BoogieIcfgContainer [2022-07-19 23:15:46,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 23:15:46,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 23:15:46,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 23:15:46,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 23:15:46,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:15:28" (1/3) ... [2022-07-19 23:15:46,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22565746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:15:46, skipping insertion in model container [2022-07-19 23:15:46,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:15:29" (2/3) ... [2022-07-19 23:15:46,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22565746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:15:46, skipping insertion in model container [2022-07-19 23:15:46,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:15:46" (3/3) ... [2022-07-19 23:15:46,584 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-19 23:15:46,594 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 23:15:46,595 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 23:15:46,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 23:15:46,657 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@599d672d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5c447fe8 [2022-07-19 23:15:46,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 23:15:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2022-07-19 23:15:46,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-19 23:15:46,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:15:46,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:15:46,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:15:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:15:46,676 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2022-07-19 23:15:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:15:46,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232142228] [2022-07-19 23:15:46,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:15:46,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:15:46,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:15:46,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:15:46,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 23:15:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:15:47,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:15:47,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:15:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:15:47,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:15:47,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:15:47,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232142228] [2022-07-19 23:15:47,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232142228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:15:47,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:15:47,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:15:47,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639258910] [2022-07-19 23:15:47,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:15:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:15:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:15:48,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:15:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:48,005 INFO L87 Difference]: Start difference. First operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:50,129 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:15:50,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:15:50,423 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2022-07-19 23:15:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:15:50,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-19 23:15:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:15:50,445 INFO L225 Difference]: With dead ends: 2070 [2022-07-19 23:15:50,445 INFO L226 Difference]: Without dead ends: 1369 [2022-07-19 23:15:50,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:50,458 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 971 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:15:50,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:15:50,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-07-19 23:15:50,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-07-19 23:15:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.451552210724365) internal successors, (1543), 1091 states have internal predecessors, (1543), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:15:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2022-07-19 23:15:50,565 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2022-07-19 23:15:50,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:15:50,566 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2022-07-19 23:15:50,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:50,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2022-07-19 23:15:50,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 23:15:50,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:15:50,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:15:50,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 23:15:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:15:50,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:15:50,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:15:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2022-07-19 23:15:50,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:15:50,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485578403] [2022-07-19 23:15:50,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:15:50,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:15:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:15:50,795 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:15:50,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 23:15:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:15:51,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:15:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:15:51,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:15:51,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:15:51,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:15:51,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485578403] [2022-07-19 23:15:51,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485578403] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:15:51,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:15:51,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:15:51,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769964430] [2022-07-19 23:15:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:15:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:15:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:15:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:15:51,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:51,763 INFO L87 Difference]: Start difference. First operand 1365 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:51,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:15:51,950 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2022-07-19 23:15:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:15:51,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 23:15:51,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:15:51,956 INFO L225 Difference]: With dead ends: 1391 [2022-07-19 23:15:51,956 INFO L226 Difference]: Without dead ends: 1378 [2022-07-19 23:15:51,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:51,957 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:15:51,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:15:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-19 23:15:51,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2022-07-19 23:15:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.4506114769520226) internal successors, (1542), 1091 states have internal predecessors, (1542), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:15:51,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2022-07-19 23:15:51,994 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2022-07-19 23:15:51,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:15:51,995 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2022-07-19 23:15:51,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:51,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2022-07-19 23:15:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-19 23:15:51,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:15:51,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:15:52,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-19 23:15:52,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:15:52,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:15:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:15:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2022-07-19 23:15:52,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:15:52,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192350870] [2022-07-19 23:15:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:15:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:15:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:15:52,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:15:52,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 23:15:53,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:15:53,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:15:53,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:15:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:15:53,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:15:53,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:15:53,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192350870] [2022-07-19 23:15:53,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192350870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:15:53,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:15:53,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:15:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267074566] [2022-07-19 23:15:53,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:15:53,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:15:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:15:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:15:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:53,580 INFO L87 Difference]: Start difference. First operand 1365 states and 1985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:55,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:15:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:15:56,025 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2022-07-19 23:15:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:15:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-19 23:15:56,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:15:56,031 INFO L225 Difference]: With dead ends: 1367 [2022-07-19 23:15:56,031 INFO L226 Difference]: Without dead ends: 1364 [2022-07-19 23:15:56,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:56,032 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:15:56,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1005 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 23:15:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-19 23:15:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-07-19 23:15:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1063 states have (on average 1.4496707431796803) internal successors, (1541), 1090 states have internal predecessors, (1541), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:15:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2022-07-19 23:15:56,065 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2022-07-19 23:15:56,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:15:56,065 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2022-07-19 23:15:56,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2022-07-19 23:15:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-19 23:15:56,067 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:15:56,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:15:56,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 23:15:56,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:15:56,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:15:56,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:15:56,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2022-07-19 23:15:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:15:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743600514] [2022-07-19 23:15:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:15:56,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:15:56,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:15:56,308 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:15:56,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 23:15:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:15:57,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:15:57,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:15:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:15:57,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:15:57,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:15:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743600514] [2022-07-19 23:15:57,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743600514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:15:57,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:15:57,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:15:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933530295] [2022-07-19 23:15:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:15:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:15:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:15:57,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:15:57,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:15:57,817 INFO L87 Difference]: Start difference. First operand 1364 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:15:59,939 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:16:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:00,004 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2022-07-19 23:16:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-19 23:16:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:00,009 INFO L225 Difference]: With dead ends: 1366 [2022-07-19 23:16:00,010 INFO L226 Difference]: Without dead ends: 1363 [2022-07-19 23:16:00,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:00,013 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:00,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 23:16:00,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-07-19 23:16:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2022-07-19 23:16:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.4487300094073376) internal successors, (1540), 1089 states have internal predecessors, (1540), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:16:00,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2022-07-19 23:16:00,050 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2022-07-19 23:16:00,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:00,050 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2022-07-19 23:16:00,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:00,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2022-07-19 23:16:00,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-19 23:16:00,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:00,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:00,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:00,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:00,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:00,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:00,273 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2022-07-19 23:16:00,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344324592] [2022-07-19 23:16:00,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:00,274 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:00,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:00,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:00,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 23:16:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:01,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:16:01,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:16:02,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:02,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:02,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344324592] [2022-07-19 23:16:02,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344324592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:02,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:02,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:16:02,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291018392] [2022-07-19 23:16:02,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:02,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:16:02,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:02,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:16:02,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:02,300 INFO L87 Difference]: Start difference. First operand 1363 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:04,441 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:16:04,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:04,510 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2022-07-19 23:16:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:04,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-19 23:16:04,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:04,516 INFO L225 Difference]: With dead ends: 1365 [2022-07-19 23:16:04,516 INFO L226 Difference]: Without dead ends: 1362 [2022-07-19 23:16:04,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:04,517 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:04,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 23:16:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-19 23:16:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-07-19 23:16:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1063 states have (on average 1.4477892756349953) internal successors, (1539), 1088 states have internal predecessors, (1539), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:16:04,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2022-07-19 23:16:04,550 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2022-07-19 23:16:04,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:04,550 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2022-07-19 23:16:04,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:04,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2022-07-19 23:16:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-19 23:16:04,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:04,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:04,590 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-19 23:16:04,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:04,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:04,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:04,772 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2022-07-19 23:16:04,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:04,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955122510] [2022-07-19 23:16:04,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:04,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:04,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:04,775 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:04,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 23:16:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:05,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:16:05,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:06,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:16:06,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:06,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955122510] [2022-07-19 23:16:06,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955122510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:06,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:06,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:16:06,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341761603] [2022-07-19 23:16:06,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:06,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:16:06,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:06,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:16:06,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:06,600 INFO L87 Difference]: Start difference. First operand 1362 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:08,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:16:08,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:08,952 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2022-07-19 23:16:08,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:08,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-19 23:16:08,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:08,961 INFO L225 Difference]: With dead ends: 1364 [2022-07-19 23:16:08,961 INFO L226 Difference]: Without dead ends: 1361 [2022-07-19 23:16:08,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:08,963 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:08,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:16:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-07-19 23:16:08,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-07-19 23:16:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1063 states have (on average 1.4468485418626529) internal successors, (1538), 1087 states have internal predecessors, (1538), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-19 23:16:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2022-07-19 23:16:09,009 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2022-07-19 23:16:09,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:09,010 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2022-07-19 23:16:09,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:09,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2022-07-19 23:16:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-19 23:16:09,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:09,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:09,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:09,229 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2022-07-19 23:16:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:09,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040760742] [2022-07-19 23:16:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:09,231 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:09,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:09,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:09,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 23:16:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:16:10,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 23:16:11,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:11,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:11,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040760742] [2022-07-19 23:16:11,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040760742] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:11,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:11,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:16:11,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143966600] [2022-07-19 23:16:11,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:11,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:16:11,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:11,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:16:11,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:11,195 INFO L87 Difference]: Start difference. First operand 1361 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:13,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:16:13,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:13,519 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2022-07-19 23:16:13,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:13,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-19 23:16:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:13,530 INFO L225 Difference]: With dead ends: 3323 [2022-07-19 23:16:13,530 INFO L226 Difference]: Without dead ends: 1957 [2022-07-19 23:16:13,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:13,536 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:13,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1473 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:16:13,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-07-19 23:16:13,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2022-07-19 23:16:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1486 states have (on average 1.3909825033647376) internal successors, (2067), 1518 states have internal predecessors, (2067), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2022-07-19 23:16:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2022-07-19 23:16:13,603 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2022-07-19 23:16:13,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:13,603 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2022-07-19 23:16:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 23:16:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2022-07-19 23:16:13,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-19 23:16:13,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:13,614 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:13,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:13,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:13,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:13,828 INFO L85 PathProgramCache]: Analyzing trace with hash -278866688, now seen corresponding path program 1 times [2022-07-19 23:16:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:13,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564416536] [2022-07-19 23:16:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:13,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:13,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:13,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:13,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-19 23:16:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:16,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:16:16,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:16,530 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-19 23:16:16,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:16,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:16,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564416536] [2022-07-19 23:16:16,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564416536] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:16,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:16,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:16:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636272366] [2022-07-19 23:16:16,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:16:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:16:16,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:16,537 INFO L87 Difference]: Start difference. First operand 1951 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 23:16:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:17,003 INFO L93 Difference]: Finished difference Result 4599 states and 6524 transitions. [2022-07-19 23:16:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:17,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 207 [2022-07-19 23:16:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:17,016 INFO L225 Difference]: With dead ends: 4599 [2022-07-19 23:16:17,017 INFO L226 Difference]: Without dead ends: 2651 [2022-07-19 23:16:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:17,023 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 527 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:17,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2005 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:16:17,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-19 23:16:17,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-19 23:16:17,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2068 states have (on average 1.4361702127659575) internal successors, (2970), 2102 states have internal predecessors, (2970), 410 states have call successors, (410), 173 states have call predecessors, (410), 172 states have return successors, (414), 401 states have call predecessors, (414), 408 states have call successors, (414) [2022-07-19 23:16:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2022-07-19 23:16:17,118 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2022-07-19 23:16:17,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:17,119 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2022-07-19 23:16:17,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-19 23:16:17,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2022-07-19 23:16:17,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-19 23:16:17,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:17,126 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:17,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:17,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:17,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:17,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:17,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1362685847, now seen corresponding path program 1 times [2022-07-19 23:16:17,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898949845] [2022-07-19 23:16:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:17,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:17,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:17,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:17,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 23:16:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:16:19,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-19 23:16:20,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:20,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:20,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898949845] [2022-07-19 23:16:20,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898949845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:20,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:20,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:16:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172790969] [2022-07-19 23:16:20,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:20,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:16:20,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:20,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:16:20,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:16:20,024 INFO L87 Difference]: Start difference. First operand 2651 states and 3794 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:16:20,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:20,438 INFO L93 Difference]: Finished difference Result 5315 states and 7623 transitions. [2022-07-19 23:16:20,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:16:20,439 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 225 [2022-07-19 23:16:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:20,447 INFO L225 Difference]: With dead ends: 5315 [2022-07-19 23:16:20,447 INFO L226 Difference]: Without dead ends: 2667 [2022-07-19 23:16:20,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:16:20,453 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 5 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:20,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2957 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:16:20,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-07-19 23:16:20,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2663. [2022-07-19 23:16:20,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2078 states have (on average 1.4340712223291627) internal successors, (2980), 2114 states have internal predecessors, (2980), 410 states have call successors, (410), 173 states have call predecessors, (410), 174 states have return successors, (416), 401 states have call predecessors, (416), 408 states have call successors, (416) [2022-07-19 23:16:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2022-07-19 23:16:20,518 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 225 [2022-07-19 23:16:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:20,519 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2022-07-19 23:16:20,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-19 23:16:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2022-07-19 23:16:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-19 23:16:20,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:20,525 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:20,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:20,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:20,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:20,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1370684821, now seen corresponding path program 1 times [2022-07-19 23:16:20,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:20,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254552934] [2022-07-19 23:16:20,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:20,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:20,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:20,743 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:20,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-19 23:16:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:23,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 23:16:23,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:25,977 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-19 23:16:25,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:25,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:25,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254552934] [2022-07-19 23:16:25,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254552934] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:25,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:25,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 23:16:25,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841264386] [2022-07-19 23:16:25,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:25,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 23:16:25,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:25,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 23:16:25,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 23:16:25,979 INFO L87 Difference]: Start difference. First operand 2663 states and 3806 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:28,071 INFO L93 Difference]: Finished difference Result 5371 states and 7707 transitions. [2022-07-19 23:16:28,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 23:16:28,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 225 [2022-07-19 23:16:28,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:28,083 INFO L225 Difference]: With dead ends: 5371 [2022-07-19 23:16:28,083 INFO L226 Difference]: Without dead ends: 2711 [2022-07-19 23:16:28,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:16:28,091 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 7 mSDsluCounter, 6888 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:28,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7876 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:16:28,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-19 23:16:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-19 23:16:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2106 states have (on average 1.4283000949667617) internal successors, (3008), 2142 states have internal predecessors, (3008), 410 states have call successors, (410), 173 states have call predecessors, (410), 182 states have return successors, (452), 409 states have call predecessors, (452), 408 states have call successors, (452) [2022-07-19 23:16:28,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3870 transitions. [2022-07-19 23:16:28,163 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3870 transitions. Word has length 225 [2022-07-19 23:16:28,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:28,163 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3870 transitions. [2022-07-19 23:16:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:28,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3870 transitions. [2022-07-19 23:16:28,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 23:16:28,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:28,170 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:28,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:28,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:28,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:28,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1261399318, now seen corresponding path program 1 times [2022-07-19 23:16:28,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:28,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467876413] [2022-07-19 23:16:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:28,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:28,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:28,395 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:28,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 23:16:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:31,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:16:31,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-19 23:16:31,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:31,358 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:31,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467876413] [2022-07-19 23:16:31,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467876413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:31,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:31,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:16:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174286633] [2022-07-19 23:16:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:31,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:16:31,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:31,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:16:31,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:16:31,359 INFO L87 Difference]: Start difference. First operand 2699 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:32,114 INFO L93 Difference]: Finished difference Result 5419 states and 7787 transitions. [2022-07-19 23:16:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:16:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 228 [2022-07-19 23:16:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:32,129 INFO L225 Difference]: With dead ends: 5419 [2022-07-19 23:16:32,129 INFO L226 Difference]: Without dead ends: 2723 [2022-07-19 23:16:32,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:16:32,136 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:32,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:16:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-07-19 23:16:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2022-07-19 23:16:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2116 states have (on average 1.4262759924385633) internal successors, (3018), 2152 states have internal predecessors, (3018), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 411 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-19 23:16:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3884 transitions. [2022-07-19 23:16:32,214 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3884 transitions. Word has length 228 [2022-07-19 23:16:32,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:32,214 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3884 transitions. [2022-07-19 23:16:32,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:32,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3884 transitions. [2022-07-19 23:16:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-19 23:16:32,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:32,223 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:32,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-07-19 23:16:32,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:32,436 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1945602355, now seen corresponding path program 1 times [2022-07-19 23:16:32,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:32,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619999590] [2022-07-19 23:16:32,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:32,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:32,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:32,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-19 23:16:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:35,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 23:16:35,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-19 23:16:36,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:36,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:36,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619999590] [2022-07-19 23:16:36,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619999590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:36,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:36,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:16:36,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034568627] [2022-07-19 23:16:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:36,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:16:36,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:16:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:16:36,458 INFO L87 Difference]: Start difference. First operand 2711 states and 3884 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:16:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:38,094 INFO L93 Difference]: Finished difference Result 5459 states and 7831 transitions. [2022-07-19 23:16:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:16:38,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 238 [2022-07-19 23:16:38,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:38,106 INFO L225 Difference]: With dead ends: 5459 [2022-07-19 23:16:38,106 INFO L226 Difference]: Without dead ends: 2751 [2022-07-19 23:16:38,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:16:38,114 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 5 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:38,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4936 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:16:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-07-19 23:16:38,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2723. [2022-07-19 23:16:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2128 states have (on average 1.4238721804511278) internal successors, (3030), 2160 states have internal predecessors, (3030), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 415 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-19 23:16:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3896 transitions. [2022-07-19 23:16:38,186 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3896 transitions. Word has length 238 [2022-07-19 23:16:38,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:38,187 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3896 transitions. [2022-07-19 23:16:38,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 23:16:38,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3896 transitions. [2022-07-19 23:16:38,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-19 23:16:38,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:38,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:38,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:38,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:38,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:38,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash 332974640, now seen corresponding path program 2 times [2022-07-19 23:16:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:38,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196161938] [2022-07-19 23:16:38,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:16:38,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:38,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:38,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:38,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-19 23:16:40,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 23:16:40,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:16:40,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:16:40,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-19 23:16:40,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:40,616 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:40,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196161938] [2022-07-19 23:16:40,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196161938] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:40,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:40,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:16:40,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696575685] [2022-07-19 23:16:40,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:16:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:16:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:40,618 INFO L87 Difference]: Start difference. First operand 2723 states and 3896 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:42,723 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 23:16:42,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:42,960 INFO L93 Difference]: Finished difference Result 3548 states and 4926 transitions. [2022-07-19 23:16:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:16:42,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 241 [2022-07-19 23:16:42,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:42,970 INFO L225 Difference]: With dead ends: 3548 [2022-07-19 23:16:42,971 INFO L226 Difference]: Without dead ends: 2711 [2022-07-19 23:16:42,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:16:42,974 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 403 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:42,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 23:16:42,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-19 23:16:43,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-19 23:16:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-19 23:16:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-19 23:16:43,036 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 241 [2022-07-19 23:16:43,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:43,037 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-19 23:16:43,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-19 23:16:43,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-19 23:16:43,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-19 23:16:43,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:43,048 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:43,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-07-19 23:16:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:43,276 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2084236656, now seen corresponding path program 1 times [2022-07-19 23:16:43,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:43,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63453572] [2022-07-19 23:16:43,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:43,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:43,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:43,282 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:43,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-19 23:16:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:47,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:16:47,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:48,064 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-07-19 23:16:48,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:48,065 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:48,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63453572] [2022-07-19 23:16:48,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63453572] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:48,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:48,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:16:48,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064201608] [2022-07-19 23:16:48,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:48,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:16:48,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:48,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:16:48,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:16:48,068 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:16:49,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:49,695 INFO L93 Difference]: Finished difference Result 5443 states and 7785 transitions. [2022-07-19 23:16:49,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:16:49,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 440 [2022-07-19 23:16:49,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:49,712 INFO L225 Difference]: With dead ends: 5443 [2022-07-19 23:16:49,712 INFO L226 Difference]: Without dead ends: 2747 [2022-07-19 23:16:49,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:16:49,718 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:49,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3927 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 23:16:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-07-19 23:16:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2022-07-19 23:16:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-19 23:16:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-19 23:16:49,784 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 440 [2022-07-19 23:16:49,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:49,784 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-19 23:16:49,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-19 23:16:49,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-19 23:16:49,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-19 23:16:49,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:49,794 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:49,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:50,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:50,026 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 735862630, now seen corresponding path program 1 times [2022-07-19 23:16:50,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:50,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636288471] [2022-07-19 23:16:50,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:50,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:50,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:50,031 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:50,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-19 23:16:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:16:54,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:16:54,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:16:55,142 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-19 23:16:55,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:16:55,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:16:55,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636288471] [2022-07-19 23:16:55,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636288471] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:16:55,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:16:55,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:16:55,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032696693] [2022-07-19 23:16:55,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:16:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:16:55,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:16:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:16:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:16:55,150 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 23:16:55,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:16:55,774 INFO L93 Difference]: Finished difference Result 5423 states and 7765 transitions. [2022-07-19 23:16:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:16:55,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 440 [2022-07-19 23:16:55,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:16:55,785 INFO L225 Difference]: With dead ends: 5423 [2022-07-19 23:16:55,785 INFO L226 Difference]: Without dead ends: 2727 [2022-07-19 23:16:55,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:16:55,796 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 7 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:16:55,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:16:55,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-07-19 23:16:55,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2707. [2022-07-19 23:16:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2120 states have (on average 1.4231132075471697) internal successors, (3017), 2150 states have internal predecessors, (3017), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-19 23:16:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3867 transitions. [2022-07-19 23:16:55,902 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3867 transitions. Word has length 440 [2022-07-19 23:16:55,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:16:55,903 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 3867 transitions. [2022-07-19 23:16:55,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 23:16:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3867 transitions. [2022-07-19 23:16:55,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-19 23:16:55,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:16:55,916 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:16:56,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-19 23:16:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:16:56,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:16:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:16:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1782441170, now seen corresponding path program 1 times [2022-07-19 23:16:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:16:56,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909449431] [2022-07-19 23:16:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:16:56,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:16:56,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:16:56,148 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:16:56,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-19 23:17:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:00,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 5022 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 23:17:00,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:02,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-19 23:17:02,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:02,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:02,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909449431] [2022-07-19 23:17:02,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909449431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:02,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:02,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 23:17:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694199886] [2022-07-19 23:17:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:17:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:02,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:17:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:17:02,152 INFO L87 Difference]: Start difference. First operand 2707 states and 3867 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:17:02,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:02,956 INFO L93 Difference]: Finished difference Result 5459 states and 7801 transitions. [2022-07-19 23:17:02,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:17:02,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 486 [2022-07-19 23:17:02,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:02,967 INFO L225 Difference]: With dead ends: 5459 [2022-07-19 23:17:02,967 INFO L226 Difference]: Without dead ends: 2755 [2022-07-19 23:17:02,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:17:02,976 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 6 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:02,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4939 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:17:02,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-19 23:17:03,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2719. [2022-07-19 23:17:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2132 states have (on average 1.420731707317073) internal successors, (3029), 2158 states have internal predecessors, (3029), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 414 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-19 23:17:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3879 transitions. [2022-07-19 23:17:03,076 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3879 transitions. Word has length 486 [2022-07-19 23:17:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:03,076 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3879 transitions. [2022-07-19 23:17:03,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:17:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3879 transitions. [2022-07-19 23:17:03,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-19 23:17:03,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:03,083 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:03,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:03,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:03,296 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:03,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:03,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1213120962, now seen corresponding path program 2 times [2022-07-19 23:17:03,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:03,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538504141] [2022-07-19 23:17:03,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:17:03,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:03,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:03,301 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:03,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-19 23:17:09,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:17:09,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:17:09,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 23:17:09,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-19 23:17:11,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:11,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:11,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538504141] [2022-07-19 23:17:11,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538504141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:11,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:11,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:17:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082124654] [2022-07-19 23:17:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:11,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:17:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:17:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:17:11,210 INFO L87 Difference]: Start difference. First operand 2719 states and 3879 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:17:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:11,926 INFO L93 Difference]: Finished difference Result 5491 states and 7837 transitions. [2022-07-19 23:17:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:17:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 492 [2022-07-19 23:17:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:11,934 INFO L225 Difference]: With dead ends: 5491 [2022-07-19 23:17:11,934 INFO L226 Difference]: Without dead ends: 2775 [2022-07-19 23:17:11,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:17:11,941 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:11,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 23:17:11,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-07-19 23:17:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2739. [2022-07-19 23:17:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2148 states have (on average 1.4175977653631284) internal successors, (3045), 2170 states have internal predecessors, (3045), 408 states have call successors, (408), 172 states have call predecessors, (408), 182 states have return successors, (450), 422 states have call predecessors, (450), 406 states have call successors, (450) [2022-07-19 23:17:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3903 transitions. [2022-07-19 23:17:11,997 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3903 transitions. Word has length 492 [2022-07-19 23:17:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:11,997 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3903 transitions. [2022-07-19 23:17:11,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-19 23:17:11,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3903 transitions. [2022-07-19 23:17:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-19 23:17:12,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:12,004 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:12,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:12,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:12,219 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:12,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:12,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1711081881, now seen corresponding path program 3 times [2022-07-19 23:17:12,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:12,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591907001] [2022-07-19 23:17:12,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:17:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:12,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:12,223 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:12,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-19 23:17:16,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 23:17:16,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:17:16,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:17:16,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-07-19 23:17:17,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:17,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:17,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591907001] [2022-07-19 23:17:17,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591907001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:17,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:17,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:17:17,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820179432] [2022-07-19 23:17:17,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:17,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:17:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:17,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:17:17,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:17:17,177 INFO L87 Difference]: Start difference. First operand 2739 states and 3903 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-19 23:17:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:17,796 INFO L93 Difference]: Finished difference Result 5503 states and 7899 transitions. [2022-07-19 23:17:17,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:17:17,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 501 [2022-07-19 23:17:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:17,809 INFO L225 Difference]: With dead ends: 5503 [2022-07-19 23:17:17,809 INFO L226 Difference]: Without dead ends: 2767 [2022-07-19 23:17:17,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:17:17,816 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:17,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:17:17,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-07-19 23:17:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2755. [2022-07-19 23:17:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2160 states have (on average 1.4152777777777779) internal successors, (3057), 2182 states have internal predecessors, (3057), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 426 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-19 23:17:17,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3961 transitions. [2022-07-19 23:17:17,972 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3961 transitions. Word has length 501 [2022-07-19 23:17:17,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:17,974 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3961 transitions. [2022-07-19 23:17:17,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-19 23:17:17,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3961 transitions. [2022-07-19 23:17:17,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-07-19 23:17:17,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:17,984 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:18,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:18,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:18,195 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:18,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:18,196 INFO L85 PathProgramCache]: Analyzing trace with hash 577896194, now seen corresponding path program 1 times [2022-07-19 23:17:18,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:18,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764315038] [2022-07-19 23:17:18,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:17:18,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:18,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:18,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:18,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-19 23:17:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:24,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 5832 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 23:17:24,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2022-07-19 23:17:25,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:25,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764315038] [2022-07-19 23:17:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764315038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:25,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:25,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 23:17:25,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055218268] [2022-07-19 23:17:25,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:25,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 23:17:25,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:25,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 23:17:25,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:17:25,577 INFO L87 Difference]: Start difference. First operand 2755 states and 3961 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:17:26,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:26,272 INFO L93 Difference]: Finished difference Result 5551 states and 7985 transitions. [2022-07-19 23:17:26,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 23:17:26,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 556 [2022-07-19 23:17:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:26,281 INFO L225 Difference]: With dead ends: 5551 [2022-07-19 23:17:26,281 INFO L226 Difference]: Without dead ends: 2799 [2022-07-19 23:17:26,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:17:26,288 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 6 mSDsluCounter, 4962 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:26,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5960 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:17:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-19 23:17:26,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2763. [2022-07-19 23:17:26,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2168 states have (on average 1.4137453874538746) internal successors, (3065), 2186 states have internal predecessors, (3065), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 430 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-19 23:17:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3969 transitions. [2022-07-19 23:17:26,360 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3969 transitions. Word has length 556 [2022-07-19 23:17:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:26,361 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3969 transitions. [2022-07-19 23:17:26,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:17:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3969 transitions. [2022-07-19 23:17:26,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-19 23:17:26,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:26,369 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:26,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:26,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:26,582 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:26,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1327618987, now seen corresponding path program 2 times [2022-07-19 23:17:26,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:26,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179119389] [2022-07-19 23:17:26,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:17:26,585 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:26,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:26,586 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:26,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-19 23:17:28,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 23:17:28,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:17:28,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:17:28,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:29,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2022-07-19 23:17:29,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:29,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:29,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179119389] [2022-07-19 23:17:29,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179119389] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:29,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:29,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:17:29,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301465628] [2022-07-19 23:17:29,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:29,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:17:29,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:29,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:17:29,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:17:29,337 INFO L87 Difference]: Start difference. First operand 2763 states and 3969 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:17:29,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:29,723 INFO L93 Difference]: Finished difference Result 5559 states and 8159 transitions. [2022-07-19 23:17:29,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:17:29,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 559 [2022-07-19 23:17:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:29,761 INFO L225 Difference]: With dead ends: 5559 [2022-07-19 23:17:29,761 INFO L226 Difference]: Without dead ends: 2799 [2022-07-19 23:17:29,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:17:29,784 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:29,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:17:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-19 23:17:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2787. [2022-07-19 23:17:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2186 states have (on average 1.4103385178408052) internal successors, (3083), 2204 states have internal predecessors, (3083), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 436 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:17:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4005 transitions. [2022-07-19 23:17:29,862 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4005 transitions. Word has length 559 [2022-07-19 23:17:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:29,864 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4005 transitions. [2022-07-19 23:17:29,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 23:17:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4005 transitions. [2022-07-19 23:17:29,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-07-19 23:17:29,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:29,873 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:29,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:30,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:30,096 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:30,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1133548342, now seen corresponding path program 1 times [2022-07-19 23:17:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:30,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715607408] [2022-07-19 23:17:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:17:30,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:30,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:30,111 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:30,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-19 23:17:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:36,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 5866 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-19 23:17:36,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 475 proven. 0 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2022-07-19 23:17:39,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:39,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:39,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715607408] [2022-07-19 23:17:39,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715607408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:39,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:39,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 23:17:39,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963879967] [2022-07-19 23:17:39,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:39,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 23:17:39,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 23:17:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 23:17:39,916 INFO L87 Difference]: Start difference. First operand 2787 states and 4005 transitions. Second operand has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:17:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:43,930 INFO L93 Difference]: Finished difference Result 5819 states and 8399 transitions. [2022-07-19 23:17:43,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 23:17:43,931 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 562 [2022-07-19 23:17:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:43,940 INFO L225 Difference]: With dead ends: 5819 [2022-07-19 23:17:43,940 INFO L226 Difference]: Without dead ends: 3035 [2022-07-19 23:17:43,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-19 23:17:43,945 INFO L413 NwaCegarLoop]: 1046 mSDtfsCounter, 116 mSDsluCounter, 9284 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 10330 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:43,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 10330 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 23:17:43,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-19 23:17:44,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2799. [2022-07-19 23:17:44,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2198 states have (on average 1.408098271155596) internal successors, (3095), 2212 states have internal predecessors, (3095), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:17:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4017 transitions. [2022-07-19 23:17:44,014 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4017 transitions. Word has length 562 [2022-07-19 23:17:44,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:44,014 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4017 transitions. [2022-07-19 23:17:44,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:17:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4017 transitions. [2022-07-19 23:17:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-19 23:17:44,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:44,021 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:44,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:44,236 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:44,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 776342615, now seen corresponding path program 2 times [2022-07-19 23:17:44,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:44,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [841263701] [2022-07-19 23:17:44,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:17:44,239 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:44,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:44,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:44,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-19 23:17:46,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 23:17:46,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:17:46,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:17:46,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2022-07-19 23:17:46,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:46,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:46,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [841263701] [2022-07-19 23:17:46,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [841263701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:46,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:46,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:17:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406380788] [2022-07-19 23:17:46,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:17:46,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:17:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:17:46,978 INFO L87 Difference]: Start difference. First operand 2799 states and 4017 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:17:47,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:47,092 INFO L93 Difference]: Finished difference Result 5599 states and 8051 transitions. [2022-07-19 23:17:47,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:17:47,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 559 [2022-07-19 23:17:47,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:47,100 INFO L225 Difference]: With dead ends: 5599 [2022-07-19 23:17:47,100 INFO L226 Difference]: Without dead ends: 2803 [2022-07-19 23:17:47,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:17:47,106 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:47,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1970 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 23:17:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-07-19 23:17:47,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2022-07-19 23:17:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2202 states have (on average 1.4073569482288828) internal successors, (3099), 2216 states have internal predecessors, (3099), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:17:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4021 transitions. [2022-07-19 23:17:47,175 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4021 transitions. Word has length 559 [2022-07-19 23:17:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:47,175 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4021 transitions. [2022-07-19 23:17:47,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-19 23:17:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4021 transitions. [2022-07-19 23:17:47,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-07-19 23:17:47,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:47,182 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:47,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:47,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:47,408 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash 330953787, now seen corresponding path program 1 times [2022-07-19 23:17:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:47,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699661199] [2022-07-19 23:17:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:17:47,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:47,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:47,412 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:47,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-19 23:17:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:17:53,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 5871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:17:53,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:17:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2022-07-19 23:17:54,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:17:54,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:17:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699661199] [2022-07-19 23:17:54,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699661199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:17:54,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:17:54,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 23:17:54,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203088928] [2022-07-19 23:17:54,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:17:54,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 23:17:54,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:17:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 23:17:54,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 23:17:54,011 INFO L87 Difference]: Start difference. First operand 2803 states and 4021 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:17:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:17:54,615 INFO L93 Difference]: Finished difference Result 5635 states and 8097 transitions. [2022-07-19 23:17:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 23:17:54,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 561 [2022-07-19 23:17:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:17:54,622 INFO L225 Difference]: With dead ends: 5635 [2022-07-19 23:17:54,622 INFO L226 Difference]: Without dead ends: 2835 [2022-07-19 23:17:54,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:17:54,627 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:17:54,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2956 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:17:54,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-07-19 23:17:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2811. [2022-07-19 23:17:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4058823529411764) internal successors, (3107), 2224 states have internal predecessors, (3107), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:17:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-07-19 23:17:54,692 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 561 [2022-07-19 23:17:54,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:17:54,692 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-07-19 23:17:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:17:54,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-07-19 23:17:54,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-07-19 23:17:54,699 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:17:54,700 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:17:54,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-19 23:17:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:17:54,927 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:17:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:17:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1650606693, now seen corresponding path program 1 times [2022-07-19 23:17:54,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:17:54,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390927566] [2022-07-19 23:17:54,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:17:54,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:17:54,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:17:54,932 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:17:54,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-19 23:18:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:01,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 5965 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-19 23:18:01,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:04,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-19 23:18:04,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:18:04,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:04,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390927566] [2022-07-19 23:18:04,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390927566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:04,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:04,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 23:18:04,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956966929] [2022-07-19 23:18:04,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:04,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 23:18:04,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:04,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 23:18:04,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 23:18:04,434 INFO L87 Difference]: Start difference. First operand 2811 states and 4029 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:18:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:06,850 INFO L93 Difference]: Finished difference Result 5647 states and 8105 transitions. [2022-07-19 23:18:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 23:18:06,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 569 [2022-07-19 23:18:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:06,857 INFO L225 Difference]: With dead ends: 5647 [2022-07-19 23:18:06,857 INFO L226 Difference]: Without dead ends: 2839 [2022-07-19 23:18:06,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-19 23:18:06,862 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 16 mSDsluCounter, 7889 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8879 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:06,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8879 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 23:18:06,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-07-19 23:18:06,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2811. [2022-07-19 23:18:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:18:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-19 23:18:06,967 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 569 [2022-07-19 23:18:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:06,968 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-19 23:18:06,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-19 23:18:06,968 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-19 23:18:06,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-19 23:18:06,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:06,975 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:18:07,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-19 23:18:07,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:07,193 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:07,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:07,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1290265901, now seen corresponding path program 2 times [2022-07-19 23:18:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:07,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705064594] [2022-07-19 23:18:07,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:18:07,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:07,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:07,201 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:07,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-19 23:18:16,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:18:16,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:18:16,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:18:16,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:17,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-19 23:18:17,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:18:17,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:17,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705064594] [2022-07-19 23:18:17,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705064594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:17,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:17,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:17,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239318185] [2022-07-19 23:18:17,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:17,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:17,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:17,095 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:18:18,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:18,191 INFO L93 Difference]: Finished difference Result 5683 states and 8149 transitions. [2022-07-19 23:18:18,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 23:18:18,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-19 23:18:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:18,198 INFO L225 Difference]: With dead ends: 5683 [2022-07-19 23:18:18,198 INFO L226 Difference]: Without dead ends: 2875 [2022-07-19 23:18:18,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 23:18:18,204 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 20 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3945 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:18,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3945 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 23:18:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-07-19 23:18:18,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2811. [2022-07-19 23:18:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:18:18,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-19 23:18:18,290 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 575 [2022-07-19 23:18:18,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:18,290 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-19 23:18:18,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:18:18,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-19 23:18:18,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-19 23:18:18,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:18,297 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:18:18,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-19 23:18:18,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:18,512 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:18,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:18,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1466773769, now seen corresponding path program 1 times [2022-07-19 23:18:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:18,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955354739] [2022-07-19 23:18:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:18,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:18,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:18,528 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:18,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-19 23:18:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:25,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 6021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 23:18:25,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-19 23:18:25,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:18:25,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:25,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955354739] [2022-07-19 23:18:25,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955354739] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:25,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:25,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 23:18:25,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359202290] [2022-07-19 23:18:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:25,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 23:18:25,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 23:18:25,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:18:25,437 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:18:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:25,844 INFO L93 Difference]: Finished difference Result 5747 states and 8261 transitions. [2022-07-19 23:18:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 23:18:25,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-19 23:18:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:25,850 INFO L225 Difference]: With dead ends: 5747 [2022-07-19 23:18:25,851 INFO L226 Difference]: Without dead ends: 2939 [2022-07-19 23:18:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 23:18:25,856 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 27 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:25,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1963 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 23:18:25,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-19 23:18:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2819. [2022-07-19 23:18:25,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2218 states have (on average 1.402614968440036) internal successors, (3111), 2232 states have internal predecessors, (3111), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-19 23:18:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4033 transitions. [2022-07-19 23:18:25,934 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4033 transitions. Word has length 575 [2022-07-19 23:18:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:25,936 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4033 transitions. [2022-07-19 23:18:25,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-19 23:18:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4033 transitions. [2022-07-19 23:18:25,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-19 23:18:25,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:25,943 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:18:26,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-19 23:18:26,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:26,168 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:26,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash -408299781, now seen corresponding path program 1 times [2022-07-19 23:18:26,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:26,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858947507] [2022-07-19 23:18:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:26,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:26,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:26,172 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:26,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-19 23:18:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:18:33,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 6071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 23:18:33,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:33,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 481 proven. 1 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-19 23:18:33,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:18:34,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-19 23:18:34,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:34,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858947507] [2022-07-19 23:18:34,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858947507] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:18:34,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:18:34,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 23:18:34,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282125674] [2022-07-19 23:18:34,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:18:34,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:18:34,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:34,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:18:34,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:18:34,620 INFO L87 Difference]: Start difference. First operand 2819 states and 4033 transitions. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-19 23:18:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:36,729 INFO L93 Difference]: Finished difference Result 5891 states and 8481 transitions. [2022-07-19 23:18:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:36,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 593 [2022-07-19 23:18:36,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:36,737 INFO L225 Difference]: With dead ends: 5891 [2022-07-19 23:18:36,738 INFO L226 Difference]: Without dead ends: 3075 [2022-07-19 23:18:36,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:18:36,742 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 81 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:36,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 4899 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-19 23:18:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-07-19 23:18:36,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2022-07-19 23:18:36,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2402 states have (on average 1.3917568692756037) internal successors, (3343), 2416 states have internal predecessors, (3343), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 512 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-19 23:18:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4425 transitions. [2022-07-19 23:18:36,819 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4425 transitions. Word has length 593 [2022-07-19 23:18:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:36,819 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 4425 transitions. [2022-07-19 23:18:36,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-19 23:18:36,819 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4425 transitions. [2022-07-19 23:18:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-19 23:18:36,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:36,827 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 23:18:36,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-19 23:18:37,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:37,041 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:37,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 214102459, now seen corresponding path program 2 times [2022-07-19 23:18:37,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:37,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025316979] [2022-07-19 23:18:37,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:18:37,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:37,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:37,051 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:37,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-19 23:18:48,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:18:48,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:18:49,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 6171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:18:49,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:49,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2022-07-19 23:18:49,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:18:49,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:49,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025316979] [2022-07-19 23:18:49,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025316979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:49,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:49,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:49,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509573236] [2022-07-19 23:18:49,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:49,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:49,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:49,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:49,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:49,604 INFO L87 Difference]: Start difference. First operand 3075 states and 4425 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-19 23:18:50,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:50,276 INFO L93 Difference]: Finished difference Result 6167 states and 8893 transitions. [2022-07-19 23:18:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:50,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 629 [2022-07-19 23:18:50,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:50,294 INFO L225 Difference]: With dead ends: 6167 [2022-07-19 23:18:50,295 INFO L226 Difference]: Without dead ends: 3095 [2022-07-19 23:18:50,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:50,300 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:50,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3917 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:18:50,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-07-19 23:18:50,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3083. [2022-07-19 23:18:50,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2410 states have (on average 1.3904564315352697) internal successors, (3351), 2420 states have internal predecessors, (3351), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 516 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-19 23:18:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4433 transitions. [2022-07-19 23:18:50,442 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4433 transitions. Word has length 629 [2022-07-19 23:18:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:50,442 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4433 transitions. [2022-07-19 23:18:50,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-19 23:18:50,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4433 transitions. [2022-07-19 23:18:50,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-19 23:18:50,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:50,450 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 23:18:50,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-19 23:18:50,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:50,663 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:50,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:50,664 INFO L85 PathProgramCache]: Analyzing trace with hash 586231223, now seen corresponding path program 3 times [2022-07-19 23:18:50,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:50,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966547625] [2022-07-19 23:18:50,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:18:50,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:50,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:50,668 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:50,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-19 23:18:57,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-19 23:18:57,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:18:57,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:18:57,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:18:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2022-07-19 23:18:57,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:18:57,674 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:18:57,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966547625] [2022-07-19 23:18:57,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966547625] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:18:57,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:18:57,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:18:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609104170] [2022-07-19 23:18:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:18:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:18:57,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:18:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:18:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:57,675 INFO L87 Difference]: Start difference. First operand 3083 states and 4433 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:18:58,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:18:58,053 INFO L93 Difference]: Finished difference Result 6187 states and 9133 transitions. [2022-07-19 23:18:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:18:58,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 687 [2022-07-19 23:18:58,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:18:58,060 INFO L225 Difference]: With dead ends: 6187 [2022-07-19 23:18:58,061 INFO L226 Difference]: Without dead ends: 3107 [2022-07-19 23:18:58,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:18:58,065 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:18:58,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:18:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-07-19 23:18:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3095. [2022-07-19 23:18:58,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2422 states have (on average 1.388521882741536) internal successors, (3363), 2426 states have internal predecessors, (3363), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 522 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-19 23:18:58,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4445 transitions. [2022-07-19 23:18:58,137 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4445 transitions. Word has length 687 [2022-07-19 23:18:58,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:18:58,137 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4445 transitions. [2022-07-19 23:18:58,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-19 23:18:58,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4445 transitions. [2022-07-19 23:18:58,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-19 23:18:58,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:18:58,145 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 23:18:58,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-19 23:18:58,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:18:58,372 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:18:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:18:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 327773175, now seen corresponding path program 1 times [2022-07-19 23:18:58,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:18:58,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155812151] [2022-07-19 23:18:58,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:18:58,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:18:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:18:58,378 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:18:58,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-19 23:19:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:08,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:19:08,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:19:08,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2022-07-19 23:19:08,894 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:19:08,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:19:08,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155812151] [2022-07-19 23:19:08,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155812151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:19:08,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:19:08,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:19:08,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007801004] [2022-07-19 23:19:08,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:19:08,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:19:08,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:19:08,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:19:08,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:08,896 INFO L87 Difference]: Start difference. First operand 3095 states and 4445 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-07-19 23:19:09,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:19:09,239 INFO L93 Difference]: Finished difference Result 6223 states and 9181 transitions. [2022-07-19 23:19:09,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:19:09,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 687 [2022-07-19 23:19:09,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:19:09,249 INFO L225 Difference]: With dead ends: 6223 [2022-07-19 23:19:09,249 INFO L226 Difference]: Without dead ends: 3131 [2022-07-19 23:19:09,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:09,257 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 2 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3965 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 23:19:09,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3965 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 23:19:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-07-19 23:19:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3119. [2022-07-19 23:19:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2440 states have (on average 1.3856557377049181) internal successors, (3381), 2444 states have internal predecessors, (3381), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 528 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-19 23:19:09,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4481 transitions. [2022-07-19 23:19:09,348 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4481 transitions. Word has length 687 [2022-07-19 23:19:09,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:19:09,348 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4481 transitions. [2022-07-19 23:19:09,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-07-19 23:19:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4481 transitions. [2022-07-19 23:19:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-19 23:19:09,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:19:09,358 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 23:19:09,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-07-19 23:19:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:19:09,572 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:19:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:19:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1845683625, now seen corresponding path program 1 times [2022-07-19 23:19:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:19:09,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112659486] [2022-07-19 23:19:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 23:19:09,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:19:09,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:19:09,576 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:19:09,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-19 23:19:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 23:19:21,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:19:21,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:19:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-07-19 23:19:21,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 23:19:21,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:19:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112659486] [2022-07-19 23:19:21,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112659486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 23:19:21,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 23:19:21,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 23:19:21,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611651247] [2022-07-19 23:19:21,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 23:19:21,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 23:19:21,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:19:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 23:19:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:21,863 INFO L87 Difference]: Start difference. First operand 3119 states and 4481 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-07-19 23:19:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:19:22,556 INFO L93 Difference]: Finished difference Result 6255 states and 9005 transitions. [2022-07-19 23:19:22,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 23:19:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 687 [2022-07-19 23:19:22,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:19:22,564 INFO L225 Difference]: With dead ends: 6255 [2022-07-19 23:19:22,565 INFO L226 Difference]: Without dead ends: 3139 [2022-07-19 23:19:22,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 23:19:22,569 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 23:19:22,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 23:19:22,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-07-19 23:19:22,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3127. [2022-07-19 23:19:22,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 2448 states have (on average 1.3843954248366013) internal successors, (3389), 2448 states have internal predecessors, (3389), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-19 23:19:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4489 transitions. [2022-07-19 23:19:22,650 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4489 transitions. Word has length 687 [2022-07-19 23:19:22,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:19:22,651 INFO L495 AbstractCegarLoop]: Abstraction has 3127 states and 4489 transitions. [2022-07-19 23:19:22,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-07-19 23:19:22,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4489 transitions. [2022-07-19 23:19:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2022-07-19 23:19:22,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:19:22,675 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 23:19:22,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-19 23:19:22,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:19:22,896 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:19:22,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:19:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1751353659, now seen corresponding path program 2 times [2022-07-19 23:19:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:19:22,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50180832] [2022-07-19 23:19:22,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 23:19:22,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:19:22,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:19:22,900 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:19:22,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-19 23:19:43,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 23:19:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 23:19:44,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 7655 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 23:19:44,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 23:19:44,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 1331 proven. 1 refuted. 0 times theorem prover too weak. 1020 trivial. 0 not checked. [2022-07-19 23:19:44,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 23:19:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 127 proven. 1 refuted. 0 times theorem prover too weak. 2224 trivial. 0 not checked. [2022-07-19 23:19:45,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 23:19:45,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50180832] [2022-07-19 23:19:45,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50180832] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 23:19:45,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 23:19:45,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 23:19:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480686103] [2022-07-19 23:19:45,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 23:19:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 23:19:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 23:19:45,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 23:19:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 23:19:45,417 INFO L87 Difference]: Start difference. First operand 3127 states and 4489 transitions. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-07-19 23:19:46,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 23:19:46,017 INFO L93 Difference]: Finished difference Result 6263 states and 9011 transitions. [2022-07-19 23:19:46,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 23:19:46,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 745 [2022-07-19 23:19:46,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 23:19:46,028 INFO L225 Difference]: With dead ends: 6263 [2022-07-19 23:19:46,028 INFO L226 Difference]: Without dead ends: 3139 [2022-07-19 23:19:46,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1489 GetRequests, 1484 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-19 23:19:46,037 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 23:19:46,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4922 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 23:19:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-07-19 23:19:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2022-07-19 23:19:46,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2460 states have (on average 1.382520325203252) internal successors, (3401), 2460 states have internal predecessors, (3401), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-19 23:19:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4501 transitions. [2022-07-19 23:19:46,140 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4501 transitions. Word has length 745 [2022-07-19 23:19:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 23:19:46,140 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4501 transitions. [2022-07-19 23:19:46,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 2 states have call successors, (78), 2 states have call predecessors, (78), 2 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2022-07-19 23:19:46,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4501 transitions. [2022-07-19 23:19:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-07-19 23:19:46,150 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 23:19:46,150 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 23:19:46,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-19 23:19:46,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 23:19:46,372 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 23:19:46,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 23:19:46,373 INFO L85 PathProgramCache]: Analyzing trace with hash -881458114, now seen corresponding path program 3 times [2022-07-19 23:19:46,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 23:19:46,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269446601] [2022-07-19 23:19:46,375 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 23:19:46,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 23:19:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 23:19:46,377 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 23:19:46,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process