./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:01:45,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:01:45,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:01:45,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:01:45,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:01:45,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:01:45,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:01:45,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:01:45,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:01:45,143 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:01:45,143 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:01:45,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:01:45,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:01:45,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:01:45,149 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:01:45,151 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:01:45,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:01:45,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:01:45,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:01:45,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:01:45,159 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:01:45,160 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:01:45,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:01:45,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:01:45,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:01:45,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:01:45,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:01:45,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:01:45,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:01:45,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:01:45,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:01:45,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:01:45,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:01:45,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:01:45,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:01:45,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:01:45,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:01:45,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:01:45,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:01:45,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:01:45,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:01:45,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:01:45,177 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 14:01:45,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:01:45,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:01:45,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:01:45,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:01:45,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:01:45,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:01:45,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:01:45,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:01:45,201 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:01:45,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:01:45,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 14:01:45,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:01:45,202 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:01:45,202 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:01:45,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:01:45,203 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:01:45,203 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:01:45,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:01:45,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:01:45,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:01:45,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:01:45,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:01:45,204 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:01:45,204 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:01:45,205 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:01:45,206 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-12 14:01:45,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:01:45,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:01:45,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:01:45,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:01:45,448 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:01:45,449 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:01:45,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff71ec52d/35dd809cf8d1456ea870be5836d618e6/FLAG78ebf0fb4 [2022-07-12 14:01:46,075 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:01:46,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:01:46,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff71ec52d/35dd809cf8d1456ea870be5836d618e6/FLAG78ebf0fb4 [2022-07-12 14:01:46,528 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff71ec52d/35dd809cf8d1456ea870be5836d618e6 [2022-07-12 14:01:46,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:01:46,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:01:46,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:01:46,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:01:46,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:01:46,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:01:46" (1/1) ... [2022-07-12 14:01:46,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726c3d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:46, skipping insertion in model container [2022-07-12 14:01:46,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:01:46" (1/1) ... [2022-07-12 14:01:46,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:01:46,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:01:47,677 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-12 14:01:47,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:01:47,803 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:01:47,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-12 14:01:47,958 INFO L158 Benchmark]: Toolchain (without parser) took 1426.73ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 81.9MB in the beginning and 67.8MB in the end (delta: 14.0MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2022-07-12 14:01:47,958 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 14:01:47,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1424.10ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 81.6MB in the beginning and 68.5MB in the end (delta: 13.1MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. [2022-07-12 14:01:47,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1424.10ms. Allocated memory was 109.1MB in the beginning and 132.1MB in the end (delta: 23.1MB). Free memory was 81.6MB in the beginning and 68.5MB in the end (delta: 13.1MB). Peak memory consumption was 59.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 14:01:49,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 14:01:49,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 14:01:49,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 14:01:49,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 14:01:49,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 14:01:49,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 14:01:49,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 14:01:49,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 14:01:49,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 14:01:49,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 14:01:49,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 14:01:49,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 14:01:49,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 14:01:49,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 14:01:49,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 14:01:49,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 14:01:49,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 14:01:49,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 14:01:49,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 14:01:49,655 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 14:01:49,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 14:01:49,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 14:01:49,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 14:01:49,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 14:01:49,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 14:01:49,666 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 14:01:49,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 14:01:49,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 14:01:49,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 14:01:49,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 14:01:49,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 14:01:49,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 14:01:49,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 14:01:49,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 14:01:49,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 14:01:49,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 14:01:49,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 14:01:49,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 14:01:49,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 14:01:49,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 14:01:49,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 14:01:49,678 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-12 14:01:49,707 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 14:01:49,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 14:01:49,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 14:01:49,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 14:01:49,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 14:01:49,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 14:01:49,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 14:01:49,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 14:01:49,709 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 14:01:49,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 14:01:49,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 14:01:49,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 14:01:49,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 14:01:49,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 14:01:49,710 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 14:01:49,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 14:01:49,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:01:49,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 14:01:49,712 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 14:01:49,713 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 14:01:49,713 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 14:01:49,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 14:01:49,713 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 14:01:49,713 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00358a78c5c5addd9e5a7ab9d5fbe39a67a857ec32575d905ee2c6c7ab2b30b6 [2022-07-12 14:01:49,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 14:01:50,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 14:01:50,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 14:01:50,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 14:01:50,015 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 14:01:50,017 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:01:50,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f554c9a5/a79557e7d4d94ed8b4adc6e331d15b72/FLAGd531acb8d [2022-07-12 14:01:50,714 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 14:01:50,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:01:50,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f554c9a5/a79557e7d4d94ed8b4adc6e331d15b72/FLAGd531acb8d [2022-07-12 14:01:51,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f554c9a5/a79557e7d4d94ed8b4adc6e331d15b72 [2022-07-12 14:01:51,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 14:01:51,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 14:01:51,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 14:01:51,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 14:01:51,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 14:01:51,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:01:51" (1/1) ... [2022-07-12 14:01:51,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751d52f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:51, skipping insertion in model container [2022-07-12 14:01:51,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:01:51" (1/1) ... [2022-07-12 14:01:51,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 14:01:51,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:01:52,091 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-12 14:01:52,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:01:52,230 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 14:01:52,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 14:01:52,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-12 14:01:52,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:01:52,477 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 14:01:52,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[218619,218632] [2022-07-12 14:01:52,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 14:01:52,720 INFO L208 MainTranslator]: Completed translation [2022-07-12 14:01:52,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52 WrapperNode [2022-07-12 14:01:52,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 14:01:52,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 14:01:52,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 14:01:52,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 14:01:52,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,788 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,894 INFO L137 Inliner]: procedures = 265, calls = 1509, calls flagged for inlining = 86, calls inlined = 78, statements flattened = 3180 [2022-07-12 14:01:52,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 14:01:52,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 14:01:52,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 14:01:52,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 14:01:52,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:52,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:53,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:53,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 14:01:53,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 14:01:53,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 14:01:53,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 14:01:53,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (1/1) ... [2022-07-12 14:01:53,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 14:01:53,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 14:01:53,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 14:01:53,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 14:01:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-12 14:01:53,214 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-12 14:01:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-12 14:01:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-12 14:01:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-12 14:01:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-12 14:01:53,218 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2022-07-12 14:01:53,218 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 14:01:53,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 14:01:53,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-12 14:01:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-12 14:01:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2022-07-12 14:01:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2022-07-12 14:01:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2022-07-12 14:01:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2022-07-12 14:01:53,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 14:01:53,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 14:01:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-07-12 14:01:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-07-12 14:01:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-07-12 14:01:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-07-12 14:01:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 14:01:53,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 14:01:53,221 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2022-07-12 14:01:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2022-07-12 14:01:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-07-12 14:01:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-07-12 14:01:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 14:01:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 14:01:53,222 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 14:01:53,222 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 14:01:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2022-07-12 14:01:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2022-07-12 14:01:53,223 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-12 14:01:53,223 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-12 14:01:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2022-07-12 14:01:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2022-07-12 14:01:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 14:01:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-12 14:01:53,224 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-12 14:01:53,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2022-07-12 14:01:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2022-07-12 14:01:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2022-07-12 14:01:53,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2022-07-12 14:01:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 14:01:53,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2022-07-12 14:01:53,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2022-07-12 14:01:53,228 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2022-07-12 14:01:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2022-07-12 14:01:53,229 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-12 14:01:53,229 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-12 14:01:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2022-07-12 14:01:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2022-07-12 14:01:53,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-12 14:01:53,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-12 14:01:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2022-07-12 14:01:53,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2022-07-12 14:01:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-12 14:01:53,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-12 14:01:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-12 14:01:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 14:01:53,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-12 14:01:53,233 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2022-07-12 14:01:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2022-07-12 14:01:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2022-07-12 14:01:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2022-07-12 14:01:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 14:01:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 14:01:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-12 14:01:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-12 14:01:53,234 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-12 14:01:53,234 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-12 14:01:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-12 14:01:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-12 14:01:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2022-07-12 14:01:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2022-07-12 14:01:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-12 14:01:53,235 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-12 14:01:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-12 14:01:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-12 14:01:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-12 14:01:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-12 14:01:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2022-07-12 14:01:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2022-07-12 14:01:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-12 14:01:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-12 14:01:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2022-07-12 14:01:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2022-07-12 14:01:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2022-07-12 14:01:53,237 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2022-07-12 14:01:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-07-12 14:01:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-07-12 14:01:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2022-07-12 14:01:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2022-07-12 14:01:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 14:01:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 14:01:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 14:01:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 14:01:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-12 14:01:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-12 14:01:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2022-07-12 14:01:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2022-07-12 14:01:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-12 14:01:53,239 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-12 14:01:53,239 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-12 14:01:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-12 14:01:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2022-07-12 14:01:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2022-07-12 14:01:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2022-07-12 14:01:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2022-07-12 14:01:53,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 14:01:53,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-12 14:01:53,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-12 14:01:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2022-07-12 14:01:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2022-07-12 14:01:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 14:01:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 14:01:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-07-12 14:01:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-07-12 14:01:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-12 14:01:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 14:01:53,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-12 14:01:53,243 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-07-12 14:01:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-07-12 14:01:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2022-07-12 14:01:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2022-07-12 14:01:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-12 14:01:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-12 14:01:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2022-07-12 14:01:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2022-07-12 14:01:53,244 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2022-07-12 14:01:53,244 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2022-07-12 14:01:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-12 14:01:53,245 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-12 14:01:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-07-12 14:01:53,245 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-07-12 14:01:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-12 14:01:53,245 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-12 14:01:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2022-07-12 14:01:53,245 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2022-07-12 14:01:53,245 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2022-07-12 14:01:53,246 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2022-07-12 14:01:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2022-07-12 14:01:53,246 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2022-07-12 14:01:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-07-12 14:01:53,246 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-07-12 14:01:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-12 14:01:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2022-07-12 14:01:53,246 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2022-07-12 14:01:53,246 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-12 14:01:53,247 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-12 14:01:53,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 14:01:53,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 14:01:53,649 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 14:01:53,651 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 14:01:54,181 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 14:02:04,732 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 14:02:04,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 14:02:04,748 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 14:02:04,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:02:04 BoogieIcfgContainer [2022-07-12 14:02:04,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 14:02:04,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 14:02:04,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 14:02:04,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 14:02:04,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:01:51" (1/3) ... [2022-07-12 14:02:04,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87943e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:02:04, skipping insertion in model container [2022-07-12 14:02:04,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:01:52" (2/3) ... [2022-07-12 14:02:04,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87943e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:02:04, skipping insertion in model container [2022-07-12 14:02:04,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:02:04" (3/3) ... [2022-07-12 14:02:04,758 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2022-07-12 14:02:04,768 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 14:02:04,768 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 14:02:04,832 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 14:02:04,839 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@15809b17, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5feac6f3 [2022-07-12 14:02:04,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 14:02:04,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) [2022-07-12 14:02:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 14:02:04,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:04,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:04,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1615853478, now seen corresponding path program 1 times [2022-07-12 14:02:04,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:04,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946197179] [2022-07-12 14:02:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:04,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:04,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:04,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:04,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 14:02:05,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:05,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 14:02:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-12 14:02:05,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:05,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:05,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946197179] [2022-07-12 14:02:05,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946197179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:05,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:05,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:02:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191340887] [2022-07-12 14:02:05,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:05,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 14:02:05,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 14:02:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 14:02:05,873 INFO L87 Difference]: Start difference. First operand has 1102 states, 769 states have (on average 1.340702210663199) internal successors, (1031), 808 states have internal predecessors, (1031), 261 states have call successors, (261), 71 states have call predecessors, (261), 70 states have return successors, (255), 247 states have call predecessors, (255), 255 states have call successors, (255) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 14:02:05,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:05,989 INFO L93 Difference]: Finished difference Result 2199 states and 3148 transitions. [2022-07-12 14:02:05,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 14:02:05,991 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-12 14:02:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:06,013 INFO L225 Difference]: With dead ends: 2199 [2022-07-12 14:02:06,013 INFO L226 Difference]: Without dead ends: 1089 [2022-07-12 14:02:06,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 14:02:06,028 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1538 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:06,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2022-07-12 14:02:06,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1089. [2022-07-12 14:02:06,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 764 states have (on average 1.331151832460733) internal successors, (1017), 795 states have internal predecessors, (1017), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1521 transitions. [2022-07-12 14:02:06,140 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1521 transitions. Word has length 72 [2022-07-12 14:02:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:06,142 INFO L495 AbstractCegarLoop]: Abstraction has 1089 states and 1521 transitions. [2022-07-12 14:02:06,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 14:02:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1521 transitions. [2022-07-12 14:02:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 14:02:06,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:06,150 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:06,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 14:02:06,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:06,367 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:06,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:06,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1669556384, now seen corresponding path program 1 times [2022-07-12 14:02:06,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:06,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143108170] [2022-07-12 14:02:06,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:06,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:06,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:06,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:06,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 14:02:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:07,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:02:07,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:07,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:07,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:07,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143108170] [2022-07-12 14:02:07,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143108170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:07,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:07,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:02:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012385204] [2022-07-12 14:02:07,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:02:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:07,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:02:07,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:07,366 INFO L87 Difference]: Start difference. First operand 1089 states and 1521 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 14:02:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:07,493 INFO L93 Difference]: Finished difference Result 2171 states and 3037 transitions. [2022-07-12 14:02:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:02:07,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2022-07-12 14:02:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:07,499 INFO L225 Difference]: With dead ends: 2171 [2022-07-12 14:02:07,499 INFO L226 Difference]: Without dead ends: 1090 [2022-07-12 14:02:07,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:02:07,503 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 364 mSDsluCounter, 4105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 5624 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:07,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 5624 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-12 14:02:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-12 14:02:07,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 765 states have (on average 1.330718954248366) internal successors, (1018), 796 states have internal predecessors, (1018), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1522 transitions. [2022-07-12 14:02:07,531 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1522 transitions. Word has length 72 [2022-07-12 14:02:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:07,532 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1522 transitions. [2022-07-12 14:02:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 14:02:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1522 transitions. [2022-07-12 14:02:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 14:02:07,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:07,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:07,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:07,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:07,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2122471599, now seen corresponding path program 1 times [2022-07-12 14:02:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:07,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474907891] [2022-07-12 14:02:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:07,751 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:07,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 14:02:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:08,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:02:08,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:08,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:02:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:09,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:09,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474907891] [2022-07-12 14:02:09,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474907891] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:02:09,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:02:09,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-07-12 14:02:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827865245] [2022-07-12 14:02:09,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:02:09,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 14:02:09,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 14:02:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 14:02:09,138 INFO L87 Difference]: Start difference. First operand 1090 states and 1522 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:09,513 INFO L93 Difference]: Finished difference Result 2173 states and 3039 transitions. [2022-07-12 14:02:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:02:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-12 14:02:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:09,519 INFO L225 Difference]: With dead ends: 2173 [2022-07-12 14:02:09,519 INFO L226 Difference]: Without dead ends: 1091 [2022-07-12 14:02:09,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:02:09,526 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 729 mSDsluCounter, 7135 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 8654 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:09,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [812 Valid, 8654 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:02:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-12 14:02:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-12 14:02:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 766 states have (on average 1.3302872062663185) internal successors, (1019), 797 states have internal predecessors, (1019), 255 states have call successors, (255), 70 states have call predecessors, (255), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1523 transitions. [2022-07-12 14:02:09,555 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1523 transitions. Word has length 73 [2022-07-12 14:02:09,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:09,556 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1523 transitions. [2022-07-12 14:02:09,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 9 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:09,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1523 transitions. [2022-07-12 14:02:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 14:02:09,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:09,559 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:09,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:09,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:09,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:09,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:09,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1017025920, now seen corresponding path program 2 times [2022-07-12 14:02:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:09,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791424871] [2022-07-12 14:02:09,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:02:09,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:09,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:09,776 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:09,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 14:02:10,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:02:10,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:02:10,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:10,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 14:02:10,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:10,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:10,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791424871] [2022-07-12 14:02:10,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791424871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:10,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:10,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:02:10,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149459132] [2022-07-12 14:02:10,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:10,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:10,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:10,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:10,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:10,884 INFO L87 Difference]: Start difference. First operand 1091 states and 1523 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:10,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:10,907 INFO L93 Difference]: Finished difference Result 1093 states and 1524 transitions. [2022-07-12 14:02:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:10,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2022-07-12 14:02:10,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:10,912 INFO L225 Difference]: With dead ends: 1093 [2022-07-12 14:02:10,912 INFO L226 Difference]: Without dead ends: 1090 [2022-07-12 14:02:10,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:10,913 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 1475 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:10,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1518 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:10,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-12 14:02:10,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-12 14:02:10,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 766 states have (on average 1.328981723237598) internal successors, (1018), 796 states have internal predecessors, (1018), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1521 transitions. [2022-07-12 14:02:10,936 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1521 transitions. Word has length 74 [2022-07-12 14:02:10,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:10,937 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1521 transitions. [2022-07-12 14:02:10,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:10,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1521 transitions. [2022-07-12 14:02:10,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 14:02:10,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:10,938 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:10,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:11,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:11,158 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:11,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1462680797, now seen corresponding path program 1 times [2022-07-12 14:02:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595269130] [2022-07-12 14:02:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:11,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:11,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:11,175 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:11,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 14:02:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 1588 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:02:12,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:12,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:02:12,618 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:12,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:12,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595269130] [2022-07-12 14:02:12,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595269130] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:02:12,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:02:12,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-12 14:02:12,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654107648] [2022-07-12 14:02:12,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:02:12,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 14:02:12,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 14:02:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-12 14:02:12,621 INFO L87 Difference]: Start difference. First operand 1090 states and 1521 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:12,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:12,860 INFO L93 Difference]: Finished difference Result 2173 states and 3037 transitions. [2022-07-12 14:02:12,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:02:12,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 75 [2022-07-12 14:02:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:12,867 INFO L225 Difference]: With dead ends: 2173 [2022-07-12 14:02:12,867 INFO L226 Difference]: Without dead ends: 1091 [2022-07-12 14:02:12,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 14:02:12,870 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 365 mSDsluCounter, 9713 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11230 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:12,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11230 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:12,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-12 14:02:12,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-12 14:02:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 767 states have (on average 1.3285528031290743) internal successors, (1019), 797 states have internal predecessors, (1019), 254 states have call successors, (254), 70 states have call predecessors, (254), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1522 transitions. [2022-07-12 14:02:12,952 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1522 transitions. Word has length 75 [2022-07-12 14:02:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:12,952 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1522 transitions. [2022-07-12 14:02:12,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 11 states have internal predecessors, (41), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1522 transitions. [2022-07-12 14:02:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 14:02:12,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:12,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:12,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-12 14:02:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:13,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:13,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:13,155 INFO L85 PathProgramCache]: Analyzing trace with hash -842212532, now seen corresponding path program 2 times [2022-07-12 14:02:13,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:13,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691151612] [2022-07-12 14:02:13,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:02:13,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:13,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:13,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:13,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-12 14:02:13,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:02:13,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:02:13,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:13,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-12 14:02:14,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:14,220 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:14,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691151612] [2022-07-12 14:02:14,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691151612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:14,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:14,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:02:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459667931] [2022-07-12 14:02:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:14,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:14,221 INFO L87 Difference]: Start difference. First operand 1091 states and 1522 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:14,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:14,245 INFO L93 Difference]: Finished difference Result 1093 states and 1523 transitions. [2022-07-12 14:02:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:14,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 76 [2022-07-12 14:02:14,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:14,251 INFO L225 Difference]: With dead ends: 1093 [2022-07-12 14:02:14,252 INFO L226 Difference]: Without dead ends: 1090 [2022-07-12 14:02:14,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:14,253 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 1472 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:14,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1516 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:14,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-12 14:02:14,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-12 14:02:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 767 states have (on average 1.3272490221642763) internal successors, (1018), 796 states have internal predecessors, (1018), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:14,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1520 transitions. [2022-07-12 14:02:14,278 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1520 transitions. Word has length 76 [2022-07-12 14:02:14,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:14,278 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1520 transitions. [2022-07-12 14:02:14,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:14,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1520 transitions. [2022-07-12 14:02:14,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 14:02:14,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:14,283 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:14,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:14,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash -339131500, now seen corresponding path program 1 times [2022-07-12 14:02:14,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:14,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806045430] [2022-07-12 14:02:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:14,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:14,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-12 14:02:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 14:02:15,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:15,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:02:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 14:02:16,234 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:16,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806045430] [2022-07-12 14:02:16,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806045430] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:02:16,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:02:16,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-12 14:02:16,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955493665] [2022-07-12 14:02:16,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:02:16,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 14:02:16,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 14:02:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 14:02:16,235 INFO L87 Difference]: Start difference. First operand 1090 states and 1520 transitions. Second operand has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:16,604 INFO L93 Difference]: Finished difference Result 2173 states and 3035 transitions. [2022-07-12 14:02:16,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:02:16,605 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 77 [2022-07-12 14:02:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:16,619 INFO L225 Difference]: With dead ends: 2173 [2022-07-12 14:02:16,619 INFO L226 Difference]: Without dead ends: 1091 [2022-07-12 14:02:16,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-12 14:02:16,623 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 365 mSDsluCounter, 9701 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 11216 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:16,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 11216 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:02:16,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2022-07-12 14:02:16,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1091. [2022-07-12 14:02:16,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 768 states have (on average 1.3268229166666667) internal successors, (1019), 797 states have internal predecessors, (1019), 253 states have call successors, (253), 70 states have call predecessors, (253), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1521 transitions. [2022-07-12 14:02:16,691 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1521 transitions. Word has length 77 [2022-07-12 14:02:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:16,693 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1521 transitions. [2022-07-12 14:02:16,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.0) internal successors, (44), 13 states have internal predecessors, (44), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 14:02:16,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1521 transitions. [2022-07-12 14:02:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 14:02:16,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:16,694 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:16,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:16,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:16,916 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:16,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:16,917 INFO L85 PathProgramCache]: Analyzing trace with hash 861504067, now seen corresponding path program 2 times [2022-07-12 14:02:16,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:16,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993007675] [2022-07-12 14:02:16,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:02:16,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:16,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:16,919 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:16,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-12 14:02:17,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:02:17,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:02:17,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:17,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 14:02:18,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:18,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:18,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993007675] [2022-07-12 14:02:18,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993007675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:18,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:18,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:02:18,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491215101] [2022-07-12 14:02:18,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:18,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:18,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:18,124 INFO L87 Difference]: Start difference. First operand 1091 states and 1521 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:18,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:18,158 INFO L93 Difference]: Finished difference Result 1093 states and 1522 transitions. [2022-07-12 14:02:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:18,159 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2022-07-12 14:02:18,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:18,163 INFO L225 Difference]: With dead ends: 1093 [2022-07-12 14:02:18,163 INFO L226 Difference]: Without dead ends: 1090 [2022-07-12 14:02:18,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:18,164 INFO L413 NwaCegarLoop]: 1514 mSDtfsCounter, 1469 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:18,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1514 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2022-07-12 14:02:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1090. [2022-07-12 14:02:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 768 states have (on average 1.3255208333333333) internal successors, (1018), 796 states have internal predecessors, (1018), 252 states have call successors, (252), 70 states have call predecessors, (252), 69 states have return successors, (249), 241 states have call predecessors, (249), 249 states have call successors, (249) [2022-07-12 14:02:18,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1519 transitions. [2022-07-12 14:02:18,190 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1519 transitions. Word has length 78 [2022-07-12 14:02:18,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:18,191 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1519 transitions. [2022-07-12 14:02:18,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:18,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1519 transitions. [2022-07-12 14:02:18,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 14:02:18,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:18,192 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:18,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:18,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:18,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:18,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:18,412 INFO L85 PathProgramCache]: Analyzing trace with hash 936480384, now seen corresponding path program 1 times [2022-07-12 14:02:18,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:18,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558293314] [2022-07-12 14:02:18,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:18,413 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:18,414 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:18,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-12 14:02:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:19,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:19,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 14:02:19,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:19,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:19,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558293314] [2022-07-12 14:02:19,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558293314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:19,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:19,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:02:19,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620091502] [2022-07-12 14:02:19,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:19,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:19,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:19,426 INFO L87 Difference]: Start difference. First operand 1090 states and 1519 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:19,626 INFO L93 Difference]: Finished difference Result 3228 states and 4505 transitions. [2022-07-12 14:02:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 79 [2022-07-12 14:02:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:19,635 INFO L225 Difference]: With dead ends: 3228 [2022-07-12 14:02:19,635 INFO L226 Difference]: Without dead ends: 2151 [2022-07-12 14:02:19,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:19,639 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 1479 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:19,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3296 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:19,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2151 states. [2022-07-12 14:02:19,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2151 to 2147. [2022-07-12 14:02:19,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 1512 states have (on average 1.3280423280423281) internal successors, (2008), 1566 states have internal predecessors, (2008), 496 states have call successors, (496), 139 states have call predecessors, (496), 138 states have return successors, (493), 477 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-12 14:02:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2997 transitions. [2022-07-12 14:02:19,693 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2997 transitions. Word has length 79 [2022-07-12 14:02:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:19,693 INFO L495 AbstractCegarLoop]: Abstraction has 2147 states and 2997 transitions. [2022-07-12 14:02:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 14:02:19,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2997 transitions. [2022-07-12 14:02:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 14:02:19,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:19,695 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:19,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:19,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:19,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1356184505, now seen corresponding path program 1 times [2022-07-12 14:02:19,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:19,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483757333] [2022-07-12 14:02:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:19,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:19,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:19,918 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:19,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-12 14:02:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:20,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:20,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-12 14:02:20,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:20,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:20,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483757333] [2022-07-12 14:02:20,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483757333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:20,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:20,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:02:20,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377451679] [2022-07-12 14:02:20,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:20,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:20,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:20,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:20,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:20,951 INFO L87 Difference]: Start difference. First operand 2147 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 14:02:21,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:21,247 INFO L93 Difference]: Finished difference Result 6092 states and 8514 transitions. [2022-07-12 14:02:21,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:21,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 85 [2022-07-12 14:02:21,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:21,266 INFO L225 Difference]: With dead ends: 6092 [2022-07-12 14:02:21,266 INFO L226 Difference]: Without dead ends: 3968 [2022-07-12 14:02:21,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:21,275 INFO L413 NwaCegarLoop]: 1994 mSDtfsCounter, 1302 mSDsluCounter, 1467 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:21,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 3461 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 14:02:21,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2022-07-12 14:02:21,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 3930. [2022-07-12 14:02:21,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3304473304473305) internal successors, (3688), 2870 states have internal predecessors, (3688), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-12 14:02:21,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5501 transitions. [2022-07-12 14:02:21,398 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5501 transitions. Word has length 85 [2022-07-12 14:02:21,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:21,398 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5501 transitions. [2022-07-12 14:02:21,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 14:02:21,399 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5501 transitions. [2022-07-12 14:02:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 14:02:21,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:21,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:21,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:21,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:21,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:21,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:21,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1100131717, now seen corresponding path program 1 times [2022-07-12 14:02:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:21,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549648537] [2022-07-12 14:02:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:21,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:21,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:21,648 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:21,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-12 14:02:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:22,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1685 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:22,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 14:02:22,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:22,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:22,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549648537] [2022-07-12 14:02:22,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549648537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:22,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:22,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:02:22,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619468689] [2022-07-12 14:02:22,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:22,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:22,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:22,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:22,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:22,688 INFO L87 Difference]: Start difference. First operand 3930 states and 5501 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 14:02:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:22,837 INFO L93 Difference]: Finished difference Result 3946 states and 5515 transitions. [2022-07-12 14:02:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-12 14:02:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:22,853 INFO L225 Difference]: With dead ends: 3946 [2022-07-12 14:02:22,853 INFO L226 Difference]: Without dead ends: 3938 [2022-07-12 14:02:22,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:22,855 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 1510 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:22,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 1528 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-07-12 14:02:23,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3930. [2022-07-12 14:02:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3930 states, 2772 states have (on average 1.3297258297258296) internal successors, (3686), 2870 states have internal predecessors, (3686), 897 states have call successors, (897), 263 states have call predecessors, (897), 260 states have return successors, (916), 858 states have call predecessors, (916), 894 states have call successors, (916) [2022-07-12 14:02:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3930 states to 3930 states and 5499 transitions. [2022-07-12 14:02:23,028 INFO L78 Accepts]: Start accepts. Automaton has 3930 states and 5499 transitions. Word has length 99 [2022-07-12 14:02:23,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:23,028 INFO L495 AbstractCegarLoop]: Abstraction has 3930 states and 5499 transitions. [2022-07-12 14:02:23,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 14:02:23,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3930 states and 5499 transitions. [2022-07-12 14:02:23,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 14:02:23,031 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:23,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:23,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:23,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:23,246 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:23,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1780190087, now seen corresponding path program 1 times [2022-07-12 14:02:23,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286498853] [2022-07-12 14:02:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:23,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:23,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:23,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:23,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-12 14:02:24,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:24,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:24,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:24,569 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 14:02:24,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:24,569 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:24,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286498853] [2022-07-12 14:02:24,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286498853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:24,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:24,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 14:02:24,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997594567] [2022-07-12 14:02:24,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:24,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:24,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:24,570 INFO L87 Difference]: Start difference. First operand 3930 states and 5499 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 14:02:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:24,722 INFO L93 Difference]: Finished difference Result 11724 states and 16423 transitions. [2022-07-12 14:02:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:24,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 99 [2022-07-12 14:02:24,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:24,773 INFO L225 Difference]: With dead ends: 11724 [2022-07-12 14:02:24,773 INFO L226 Difference]: Without dead ends: 7809 [2022-07-12 14:02:24,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:24,789 INFO L413 NwaCegarLoop]: 1914 mSDtfsCounter, 1451 mSDsluCounter, 1487 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:24,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 3401 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 14:02:24,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7809 states. [2022-07-12 14:02:25,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7809 to 7803. [2022-07-12 14:02:25,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 5501 states have (on average 1.3304853662970368) internal successors, (7319), 5696 states have internal predecessors, (7319), 1785 states have call successors, (1785), 523 states have call predecessors, (1785), 516 states have return successors, (1826), 1707 states have call predecessors, (1826), 1782 states have call successors, (1826) [2022-07-12 14:02:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 10930 transitions. [2022-07-12 14:02:25,112 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 10930 transitions. Word has length 99 [2022-07-12 14:02:25,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:25,112 INFO L495 AbstractCegarLoop]: Abstraction has 7803 states and 10930 transitions. [2022-07-12 14:02:25,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-12 14:02:25,112 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 10930 transitions. [2022-07-12 14:02:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-12 14:02:25,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:25,120 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:25,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:25,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:25,335 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1638859229, now seen corresponding path program 1 times [2022-07-12 14:02:25,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:25,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842442362] [2022-07-12 14:02:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:25,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:25,339 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:25,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-12 14:02:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:26,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2049 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 14:02:26,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-12 14:02:26,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:26,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:26,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842442362] [2022-07-12 14:02:26,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842442362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:26,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:26,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 14:02:26,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061739518] [2022-07-12 14:02:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:26,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 14:02:26,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 14:02:26,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:26,533 INFO L87 Difference]: Start difference. First operand 7803 states and 10930 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 14:02:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:27,117 INFO L93 Difference]: Finished difference Result 21077 states and 29504 transitions. [2022-07-12 14:02:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 14:02:27,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-07-12 14:02:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:27,173 INFO L225 Difference]: With dead ends: 21077 [2022-07-12 14:02:27,173 INFO L226 Difference]: Without dead ends: 13297 [2022-07-12 14:02:27,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 14:02:27,201 INFO L413 NwaCegarLoop]: 2185 mSDtfsCounter, 1099 mSDsluCounter, 1465 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3650 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:27,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3650 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:02:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-07-12 14:02:27,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 13275. [2022-07-12 14:02:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13275 states, 9282 states have (on average 1.3269769446240034) internal successors, (12317), 9639 states have internal predecessors, (12317), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-12 14:02:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13275 states to 13275 states and 18572 transitions. [2022-07-12 14:02:27,668 INFO L78 Accepts]: Start accepts. Automaton has 13275 states and 18572 transitions. Word has length 188 [2022-07-12 14:02:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:27,668 INFO L495 AbstractCegarLoop]: Abstraction has 13275 states and 18572 transitions. [2022-07-12 14:02:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-12 14:02:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 13275 states and 18572 transitions. [2022-07-12 14:02:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-07-12 14:02:27,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:27,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:27,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:27,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:27,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:27,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:27,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1778802056, now seen corresponding path program 1 times [2022-07-12 14:02:27,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:27,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711144095] [2022-07-12 14:02:27,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:27,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:27,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:27,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:27,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-12 14:02:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:29,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 14:02:29,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:29,485 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 14:02:29,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:29,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:29,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711144095] [2022-07-12 14:02:29,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711144095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:29,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:29,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 14:02:29,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696071131] [2022-07-12 14:02:29,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:29,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 14:02:29,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:29,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 14:02:29,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 14:02:29,487 INFO L87 Difference]: Start difference. First operand 13275 states and 18572 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 14:02:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:30,203 INFO L93 Difference]: Finished difference Result 30969 states and 44179 transitions. [2022-07-12 14:02:30,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:02:30,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 211 [2022-07-12 14:02:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:30,270 INFO L225 Difference]: With dead ends: 30969 [2022-07-12 14:02:30,270 INFO L226 Difference]: Without dead ends: 17725 [2022-07-12 14:02:30,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:30,309 INFO L413 NwaCegarLoop]: 2030 mSDtfsCounter, 720 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 5520 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:30,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 5520 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 14:02:30,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17725 states. [2022-07-12 14:02:30,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17725 to 13291. [2022-07-12 14:02:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13291 states, 9298 states have (on average 1.3264142826414282) internal successors, (12333), 9655 states have internal predecessors, (12333), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 907 states have return successors, (3170), 2939 states have call predecessors, (3170), 3082 states have call successors, (3170) [2022-07-12 14:02:30,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13291 states to 13291 states and 18588 transitions. [2022-07-12 14:02:30,854 INFO L78 Accepts]: Start accepts. Automaton has 13291 states and 18588 transitions. Word has length 211 [2022-07-12 14:02:30,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:30,854 INFO L495 AbstractCegarLoop]: Abstraction has 13291 states and 18588 transitions. [2022-07-12 14:02:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-12 14:02:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand 13291 states and 18588 transitions. [2022-07-12 14:02:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-12 14:02:30,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:30,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:30,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:31,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:31,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:31,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:31,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1257617411, now seen corresponding path program 1 times [2022-07-12 14:02:31,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:31,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417895390] [2022-07-12 14:02:31,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:31,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:31,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:31,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-12 14:02:32,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:32,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:02:32,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 14:02:32,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:32,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:32,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417895390] [2022-07-12 14:02:32,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417895390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:32,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:32,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:02:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909006899] [2022-07-12 14:02:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:32,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:02:32,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:32,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:02:32,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:32,793 INFO L87 Difference]: Start difference. First operand 13291 states and 18588 transitions. Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:33,363 INFO L93 Difference]: Finished difference Result 28824 states and 40740 transitions. [2022-07-12 14:02:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:02:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 234 [2022-07-12 14:02:33,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:33,474 INFO L225 Difference]: With dead ends: 28824 [2022-07-12 14:02:33,474 INFO L226 Difference]: Without dead ends: 15564 [2022-07-12 14:02:33,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:33,515 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 264 mSDsluCounter, 5350 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7242 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:33,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7242 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15564 states. [2022-07-12 14:02:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15564 to 13323. [2022-07-12 14:02:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13323 states, 9322 states have (on average 1.3255739111778588) internal successors, (12357), 9679 states have internal predecessors, (12357), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 915 states have return successors, (3186), 2947 states have call predecessors, (3186), 3082 states have call successors, (3186) [2022-07-12 14:02:34,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 18628 transitions. [2022-07-12 14:02:34,122 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 18628 transitions. Word has length 234 [2022-07-12 14:02:34,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:34,123 INFO L495 AbstractCegarLoop]: Abstraction has 13323 states and 18628 transitions. [2022-07-12 14:02:34,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:34,123 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 18628 transitions. [2022-07-12 14:02:34,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 14:02:34,136 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:34,136 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:34,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:34,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:34,364 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:34,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash -562124410, now seen corresponding path program 1 times [2022-07-12 14:02:34,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:34,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355216332] [2022-07-12 14:02:34,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:34,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:34,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:34,376 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:34,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-12 14:02:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:36,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:02:36,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:36,157 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 14:02:36,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:36,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355216332] [2022-07-12 14:02:36,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355216332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:36,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:36,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:02:36,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256801899] [2022-07-12 14:02:36,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:36,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:02:36,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:02:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:36,158 INFO L87 Difference]: Start difference. First operand 13323 states and 18628 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:36,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:36,742 INFO L93 Difference]: Finished difference Result 28888 states and 40820 transitions. [2022-07-12 14:02:36,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:02:36,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-12 14:02:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:36,807 INFO L225 Difference]: With dead ends: 28888 [2022-07-12 14:02:36,808 INFO L226 Difference]: Without dead ends: 15596 [2022-07-12 14:02:36,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:36,850 INFO L413 NwaCegarLoop]: 1888 mSDtfsCounter, 264 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 7230 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:36,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 7230 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:36,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15596 states. [2022-07-12 14:02:37,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15596 to 13355. [2022-07-12 14:02:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13355 states, 9346 states have (on average 1.3247378557671732) internal successors, (12381), 9703 states have internal predecessors, (12381), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-12 14:02:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13355 states to 13355 states and 18668 transitions. [2022-07-12 14:02:37,384 INFO L78 Accepts]: Start accepts. Automaton has 13355 states and 18668 transitions. Word has length 241 [2022-07-12 14:02:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:37,384 INFO L495 AbstractCegarLoop]: Abstraction has 13355 states and 18668 transitions. [2022-07-12 14:02:37,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 4 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 13355 states and 18668 transitions. [2022-07-12 14:02:37,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 14:02:37,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:37,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:37,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:37,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:37,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:37,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:37,612 INFO L85 PathProgramCache]: Analyzing trace with hash 514428999, now seen corresponding path program 1 times [2022-07-12 14:02:37,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:37,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421626124] [2022-07-12 14:02:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:37,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:37,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:37,624 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 14:02:37,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-12 14:02:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:39,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:02:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:39,523 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 14:02:39,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:39,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:39,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421626124] [2022-07-12 14:02:39,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421626124] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:39,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:39,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:02:39,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37789666] [2022-07-12 14:02:39,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:39,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:02:39,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:39,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:02:39,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:39,525 INFO L87 Difference]: Start difference. First operand 13355 states and 18668 transitions. Second operand has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:39,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:39,930 INFO L93 Difference]: Finished difference Result 26751 states and 37469 transitions. [2022-07-12 14:02:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:02:39,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-12 14:02:39,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:40,003 INFO L225 Difference]: With dead ends: 26751 [2022-07-12 14:02:40,003 INFO L226 Difference]: Without dead ends: 13427 [2022-07-12 14:02:40,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:02:40,046 INFO L413 NwaCegarLoop]: 1510 mSDtfsCounter, 8 mSDsluCounter, 4524 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6034 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:40,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6034 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 14:02:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-12 14:02:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13395. [2022-07-12 14:02:40,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13395 states, 9386 states have (on average 1.3233539313871723) internal successors, (12421), 9743 states have internal predecessors, (12421), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2955 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-12 14:02:40,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13395 states to 13395 states and 18708 transitions. [2022-07-12 14:02:40,663 INFO L78 Accepts]: Start accepts. Automaton has 13395 states and 18708 transitions. Word has length 241 [2022-07-12 14:02:40,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:40,664 INFO L495 AbstractCegarLoop]: Abstraction has 13395 states and 18708 transitions. [2022-07-12 14:02:40,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:40,664 INFO L276 IsEmpty]: Start isEmpty. Operand 13395 states and 18708 transitions. [2022-07-12 14:02:40,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-12 14:02:40,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:40,682 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:40,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:40,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:40,909 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:40,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:40,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1176236545, now seen corresponding path program 1 times [2022-07-12 14:02:40,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:40,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1503050673] [2022-07-12 14:02:40,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:40,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:40,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:40,914 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) [2022-07-12 14:02:40,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-12 14:02:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:42,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 14:02:42,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-07-12 14:02:42,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:42,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:42,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1503050673] [2022-07-12 14:02:42,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1503050673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:42,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:42,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 14:02:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82519480] [2022-07-12 14:02:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:42,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 14:02:42,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 14:02:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:02:42,857 INFO L87 Difference]: Start difference. First operand 13395 states and 18708 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:43,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:43,999 INFO L93 Difference]: Finished difference Result 31513 states and 44931 transitions. [2022-07-12 14:02:44,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 14:02:44,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 241 [2022-07-12 14:02:44,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:44,073 INFO L225 Difference]: With dead ends: 31513 [2022-07-12 14:02:44,073 INFO L226 Difference]: Without dead ends: 18149 [2022-07-12 14:02:44,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-12 14:02:44,123 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1396 mSDsluCounter, 9084 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1396 SdHoareTripleChecker+Valid, 11085 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:44,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1396 Valid, 11085 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 14:02:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2022-07-12 14:02:44,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 13427. [2022-07-12 14:02:44,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.322255255892971) internal successors, (12453), 9767 states have internal predecessors, (12453), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-12 14:02:44,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18740 transitions. [2022-07-12 14:02:44,729 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18740 transitions. Word has length 241 [2022-07-12 14:02:44,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:44,730 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18740 transitions. [2022-07-12 14:02:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 6 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18740 transitions. [2022-07-12 14:02:44,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-07-12 14:02:44,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:44,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:44,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:44,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:44,960 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:44,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:44,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1540803124, now seen corresponding path program 1 times [2022-07-12 14:02:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:44,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93855801] [2022-07-12 14:02:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:44,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:44,963 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) [2022-07-12 14:02:44,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-12 14:02:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:46,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 14:02:46,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:46,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2022-07-12 14:02:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-07-12 14:02:47,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:47,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:47,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93855801] [2022-07-12 14:02:47,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93855801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:47,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:47,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:02:47,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584161547] [2022-07-12 14:02:47,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:47,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:02:47,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:02:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:47,192 INFO L87 Difference]: Start difference. First operand 13427 states and 18740 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:47,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:47,539 INFO L93 Difference]: Finished difference Result 26823 states and 37445 transitions. [2022-07-12 14:02:47,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 14:02:47,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 248 [2022-07-12 14:02:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:47,585 INFO L225 Difference]: With dead ends: 26823 [2022-07-12 14:02:47,586 INFO L226 Difference]: Without dead ends: 13427 [2022-07-12 14:02:47,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:02:47,620 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 0 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5878 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:47,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5878 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 189 Unchecked, 0.0s Time] [2022-07-12 14:02:47,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13427 states. [2022-07-12 14:02:47,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13427 to 13427. [2022-07-12 14:02:47,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13427 states, 9418 states have (on average 1.3214058186451476) internal successors, (12445), 9767 states have internal predecessors, (12445), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 923 states have return successors, (3202), 2963 states have call predecessors, (3202), 3082 states have call successors, (3202) [2022-07-12 14:02:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13427 states to 13427 states and 18732 transitions. [2022-07-12 14:02:48,007 INFO L78 Accepts]: Start accepts. Automaton has 13427 states and 18732 transitions. Word has length 248 [2022-07-12 14:02:48,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:48,008 INFO L495 AbstractCegarLoop]: Abstraction has 13427 states and 18732 transitions. [2022-07-12 14:02:48,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 14:02:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 13427 states and 18732 transitions. [2022-07-12 14:02:48,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-07-12 14:02:48,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:48,020 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:48,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:48,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:48,244 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:48,244 INFO L85 PathProgramCache]: Analyzing trace with hash 937748831, now seen corresponding path program 1 times [2022-07-12 14:02:48,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:48,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389918869] [2022-07-12 14:02:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:48,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:48,251 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) [2022-07-12 14:02:48,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-12 14:02:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:50,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2266 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 14:02:50,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:50,310 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 14:02:50,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:02:50,310 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:50,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389918869] [2022-07-12 14:02:50,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389918869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:02:50,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:02:50,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 14:02:50,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949894201] [2022-07-12 14:02:50,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:02:50,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 14:02:50,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:50,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 14:02:50,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 14:02:50,311 INFO L87 Difference]: Start difference. First operand 13427 states and 18732 transitions. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 14:02:51,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:51,243 INFO L93 Difference]: Finished difference Result 29836 states and 42204 transitions. [2022-07-12 14:02:51,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:02:51,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 253 [2022-07-12 14:02:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:51,299 INFO L225 Difference]: With dead ends: 29836 [2022-07-12 14:02:51,299 INFO L226 Difference]: Without dead ends: 16440 [2022-07-12 14:02:51,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:02:51,335 INFO L413 NwaCegarLoop]: 1971 mSDtfsCounter, 705 mSDsluCounter, 7087 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 9058 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:51,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 9058 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 14:02:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16440 states. [2022-07-12 14:02:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16440 to 13467. [2022-07-12 14:02:51,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13467 states, 9450 states have (on average 1.3203174603174603) internal successors, (12477), 9799 states have internal predecessors, (12477), 3085 states have call successors, (3085), 920 states have call predecessors, (3085), 931 states have return successors, (3250), 2971 states have call predecessors, (3250), 3082 states have call successors, (3250) [2022-07-12 14:02:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 18812 transitions. [2022-07-12 14:02:51,770 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 18812 transitions. Word has length 253 [2022-07-12 14:02:51,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:51,770 INFO L495 AbstractCegarLoop]: Abstraction has 13467 states and 18812 transitions. [2022-07-12 14:02:51,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 5 states have internal predecessors, (150), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-12 14:02:51,771 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 18812 transitions. [2022-07-12 14:02:51,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2022-07-12 14:02:51,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:51,780 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:51,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-12 14:02:51,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:02:51,996 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:02:51,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:02:51,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1571433039, now seen corresponding path program 1 times [2022-07-12 14:02:51,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:02:51,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83753522] [2022-07-12 14:02:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:02:51,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:02:51,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:02:51,999 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) [2022-07-12 14:02:52,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-12 14:02:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:02:53,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-12 14:02:53,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:02:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-12 14:02:54,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:02:55,200 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-07-12 14:02:55,200 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:02:55,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83753522] [2022-07-12 14:02:55,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83753522] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:02:55,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:02:55,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2022-07-12 14:02:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327627854] [2022-07-12 14:02:55,200 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:02:55,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 14:02:55,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:02:55,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 14:02:55,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-12 14:02:55,201 INFO L87 Difference]: Start difference. First operand 13467 states and 18812 transitions. Second operand has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 14:02:58,340 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:02:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:02:59,182 INFO L93 Difference]: Finished difference Result 29190 states and 41214 transitions. [2022-07-12 14:02:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 14:02:59,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) Word has length 259 [2022-07-12 14:02:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:02:59,246 INFO L225 Difference]: With dead ends: 29190 [2022-07-12 14:02:59,246 INFO L226 Difference]: Without dead ends: 15754 [2022-07-12 14:02:59,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 501 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-12 14:02:59,293 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 306 mSDsluCounter, 16855 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 18570 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 14:02:59,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 18570 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 195 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 14:02:59,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2022-07-12 14:02:59,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 13499. [2022-07-12 14:02:59,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13499 states, 9474 states have (on average 1.3186616001688833) internal successors, (12493), 9823 states have internal predecessors, (12493), 3093 states have call successors, (3093), 920 states have call predecessors, (3093), 931 states have return successors, (3258), 2975 states have call predecessors, (3258), 3090 states have call successors, (3258) [2022-07-12 14:02:59,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13499 states to 13499 states and 18844 transitions. [2022-07-12 14:02:59,827 INFO L78 Accepts]: Start accepts. Automaton has 13499 states and 18844 transitions. Word has length 259 [2022-07-12 14:02:59,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:02:59,829 INFO L495 AbstractCegarLoop]: Abstraction has 13499 states and 18844 transitions. [2022-07-12 14:02:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.416666666666666) internal successors, (161), 10 states have internal predecessors, (161), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (24), 5 states have call predecessors, (24), 3 states have call successors, (24) [2022-07-12 14:02:59,829 INFO L276 IsEmpty]: Start isEmpty. Operand 13499 states and 18844 transitions. [2022-07-12 14:02:59,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-07-12 14:02:59,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:02:59,840 INFO L195 NwaCegarLoop]: trace histogram [16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:02:59,878 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:00,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:00,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:00,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:00,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1159378091, now seen corresponding path program 1 times [2022-07-12 14:03:00,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:00,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140076010] [2022-07-12 14:03:00,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:00,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:00,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:00,067 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) [2022-07-12 14:03:00,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-12 14:03:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:03,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 3364 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 14:03:03,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:03,288 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2022-07-12 14:03:03,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:03:03,288 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:03,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140076010] [2022-07-12 14:03:03,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140076010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:03:03,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:03:03,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 14:03:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399357110] [2022-07-12 14:03:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:03:03,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 14:03:03,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:03,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 14:03:03,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 14:03:03,289 INFO L87 Difference]: Start difference. First operand 13499 states and 18844 transitions. Second operand has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 14:03:05,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 14:03:06,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:06,704 INFO L93 Difference]: Finished difference Result 31509 states and 44935 transitions. [2022-07-12 14:03:06,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 14:03:06,706 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) Word has length 388 [2022-07-12 14:03:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:06,766 INFO L225 Difference]: With dead ends: 31509 [2022-07-12 14:03:06,767 INFO L226 Difference]: Without dead ends: 18041 [2022-07-12 14:03:06,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-07-12 14:03:06,802 INFO L413 NwaCegarLoop]: 2321 mSDtfsCounter, 1275 mSDsluCounter, 12024 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 274 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 14345 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:06,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 14345 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 55 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 14:03:06,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18041 states. [2022-07-12 14:03:07,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18041 to 13219. [2022-07-12 14:03:07,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13219 states, 9282 states have (on average 1.3200818789054083) internal successors, (12253), 9623 states have internal predecessors, (12253), 3025 states have call successors, (3025), 900 states have call predecessors, (3025), 911 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-12 14:03:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13219 states to 13219 states and 18464 transitions. [2022-07-12 14:03:07,344 INFO L78 Accepts]: Start accepts. Automaton has 13219 states and 18464 transitions. Word has length 388 [2022-07-12 14:03:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:07,345 INFO L495 AbstractCegarLoop]: Abstraction has 13219 states and 18464 transitions. [2022-07-12 14:03:07,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.5) internal successors, (196), 7 states have internal predecessors, (196), 2 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (32), 3 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-12 14:03:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 13219 states and 18464 transitions. [2022-07-12 14:03:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-07-12 14:03:07,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:07,355 INFO L195 NwaCegarLoop]: trace histogram [16, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:07,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:07,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:07,560 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:07,561 INFO L85 PathProgramCache]: Analyzing trace with hash 643551835, now seen corresponding path program 1 times [2022-07-12 14:03:07,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:07,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394581592] [2022-07-12 14:03:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:07,563 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:07,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:07,564 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) [2022-07-12 14:03:07,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-12 14:03:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:10,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 3312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 14:03:10,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 171 proven. 10 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2022-07-12 14:03:10,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:03:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 42 proven. 84 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2022-07-12 14:03:11,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:11,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394581592] [2022-07-12 14:03:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394581592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:03:11,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:03:11,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-07-12 14:03:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852145222] [2022-07-12 14:03:11,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:03:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-12 14:03:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-12 14:03:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-07-12 14:03:11,534 INFO L87 Difference]: Start difference. First operand 13219 states and 18464 transitions. Second operand has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:03:13,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:13,375 INFO L93 Difference]: Finished difference Result 26497 states and 37041 transitions. [2022-07-12 14:03:13,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 14:03:13,376 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 389 [2022-07-12 14:03:13,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:13,429 INFO L225 Difference]: With dead ends: 26497 [2022-07-12 14:03:13,429 INFO L226 Difference]: Without dead ends: 13293 [2022-07-12 14:03:13,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 786 GetRequests, 764 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=197, Invalid=355, Unknown=0, NotChecked=0, Total=552 [2022-07-12 14:03:13,464 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 30 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 9061 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:13,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 9061 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 14:03:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13293 states. [2022-07-12 14:03:13,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13293 to 13283. [2022-07-12 14:03:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13283 states, 9342 states have (on average 1.320595161635624) internal successors, (12337), 9683 states have internal predecessors, (12337), 3025 states have call successors, (3025), 904 states have call predecessors, (3025), 915 states have return successors, (3186), 2907 states have call predecessors, (3186), 3022 states have call successors, (3186) [2022-07-12 14:03:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13283 states to 13283 states and 18548 transitions. [2022-07-12 14:03:13,925 INFO L78 Accepts]: Start accepts. Automaton has 13283 states and 18548 transitions. Word has length 389 [2022-07-12 14:03:13,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:13,926 INFO L495 AbstractCegarLoop]: Abstraction has 13283 states and 18548 transitions. [2022-07-12 14:03:13,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 16.5) internal successors, (231), 14 states have internal predecessors, (231), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:03:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 13283 states and 18548 transitions. [2022-07-12 14:03:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-12 14:03:13,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:13,939 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:13,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-12 14:03:14,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:14,161 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:14,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:14,161 INFO L85 PathProgramCache]: Analyzing trace with hash -676411589, now seen corresponding path program 2 times [2022-07-12 14:03:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:14,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55528159] [2022-07-12 14:03:14,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:03:14,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:14,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:14,164 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) [2022-07-12 14:03:14,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-12 14:03:15,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 14:03:15,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:03:15,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1942 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 14:03:15,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:15,950 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-12 14:03:15,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:03:15,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:15,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55528159] [2022-07-12 14:03:15,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55528159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:03:15,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:03:15,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 14:03:15,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655450873] [2022-07-12 14:03:15,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:03:15,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 14:03:15,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:15,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 14:03:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 14:03:15,952 INFO L87 Difference]: Start difference. First operand 13283 states and 18548 transitions. Second operand has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 14:03:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:21,080 INFO L93 Difference]: Finished difference Result 42136 states and 59309 transitions. [2022-07-12 14:03:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 14:03:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 407 [2022-07-12 14:03:21,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:21,199 INFO L225 Difference]: With dead ends: 42136 [2022-07-12 14:03:21,200 INFO L226 Difference]: Without dead ends: 28884 [2022-07-12 14:03:21,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-07-12 14:03:21,241 INFO L413 NwaCegarLoop]: 2751 mSDtfsCounter, 2310 mSDsluCounter, 20515 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2313 SdHoareTripleChecker+Valid, 23266 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:21,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2313 Valid, 23266 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 14:03:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28884 states. [2022-07-12 14:03:22,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28884 to 26475. [2022-07-12 14:03:22,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26475 states, 18594 states have (on average 1.3216629020114015) internal successors, (24575), 19295 states have internal predecessors, (24575), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-12 14:03:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26475 states to 26475 states and 37014 transitions. [2022-07-12 14:03:22,240 INFO L78 Accepts]: Start accepts. Automaton has 26475 states and 37014 transitions. Word has length 407 [2022-07-12 14:03:22,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:22,241 INFO L495 AbstractCegarLoop]: Abstraction has 26475 states and 37014 transitions. [2022-07-12 14:03:22,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.8) internal successors, (178), 8 states have internal predecessors, (178), 3 states have call successors, (35), 2 states have call predecessors, (35), 4 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-12 14:03:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 26475 states and 37014 transitions. [2022-07-12 14:03:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2022-07-12 14:03:22,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:22,263 INFO L195 NwaCegarLoop]: trace histogram [34, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:22,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-07-12 14:03:22,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:22,488 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:22,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash 217074749, now seen corresponding path program 1 times [2022-07-12 14:03:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:22,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358928242] [2022-07-12 14:03:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:03:22,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:22,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:22,500 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) [2022-07-12 14:03:22,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-12 14:03:25,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:03:26,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 3508 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-12 14:03:26,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:03:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 453 proven. 55 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-07-12 14:03:26,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:03:28,611 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 72 proven. 321 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2022-07-12 14:03:28,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:03:28,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358928242] [2022-07-12 14:03:28,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358928242] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:03:28,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:03:28,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-07-12 14:03:28,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435113687] [2022-07-12 14:03:28,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:03:28,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 14:03:28,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:03:28,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 14:03:28,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-07-12 14:03:28,613 INFO L87 Difference]: Start difference. First operand 26475 states and 37014 transitions. Second operand has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:03:36,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:03:36,198 INFO L93 Difference]: Finished difference Result 53369 states and 74677 transitions. [2022-07-12 14:03:36,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-07-12 14:03:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 407 [2022-07-12 14:03:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:03:36,311 INFO L225 Difference]: With dead ends: 53369 [2022-07-12 14:03:36,312 INFO L226 Difference]: Without dead ends: 26701 [2022-07-12 14:03:36,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=917, Invalid=1945, Unknown=0, NotChecked=0, Total=2862 [2022-07-12 14:03:36,384 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 148 mSDsluCounter, 16662 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 18180 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 14:03:36,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 18180 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 14:03:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26701 states. [2022-07-12 14:03:37,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26701 to 26667. [2022-07-12 14:03:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26667 states, 18786 states have (on average 1.3162461407431065) internal successors, (24727), 19487 states have internal predecessors, (24727), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-12 14:03:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26667 states to 26667 states and 37166 transitions. [2022-07-12 14:03:37,436 INFO L78 Accepts]: Start accepts. Automaton has 26667 states and 37166 transitions. Word has length 407 [2022-07-12 14:03:37,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:03:37,437 INFO L495 AbstractCegarLoop]: Abstraction has 26667 states and 37166 transitions. [2022-07-12 14:03:37,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.346153846153847) internal successors, (243), 26 states have internal predecessors, (243), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:03:37,437 INFO L276 IsEmpty]: Start isEmpty. Operand 26667 states and 37166 transitions. [2022-07-12 14:03:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2022-07-12 14:03:37,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:03:37,458 INFO L195 NwaCegarLoop]: trace histogram [70, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:03:37,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-07-12 14:03:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:03:37,667 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:03:37,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:03:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1470402045, now seen corresponding path program 2 times [2022-07-12 14:03:37,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:03:37,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364000172] [2022-07-12 14:03:37,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 14:03:37,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:03:37,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:03:37,671 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) [2022-07-12 14:03:37,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-12 14:04:18,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 14:04:18,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:04:18,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 3904 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-12 14:04:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:04:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 1449 proven. 253 refuted. 0 times theorem prover too weak. 1268 trivial. 0 not checked. [2022-07-12 14:04:20,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:04:26,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 132 proven. 1335 refuted. 0 times theorem prover too weak. 1503 trivial. 0 not checked. [2022-07-12 14:04:26,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:04:26,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364000172] [2022-07-12 14:04:26,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364000172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:04:26,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:04:26,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-07-12 14:04:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573319366] [2022-07-12 14:04:26,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:04:26,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-12 14:04:26,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:04:26,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-12 14:04:26,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-07-12 14:04:26,717 INFO L87 Difference]: Start difference. First operand 26667 states and 37166 transitions. Second operand has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:05:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:05:00,830 INFO L93 Difference]: Finished difference Result 54185 states and 75629 transitions. [2022-07-12 14:05:00,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-12 14:05:00,831 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) Word has length 443 [2022-07-12 14:05:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:05:00,945 INFO L225 Difference]: With dead ends: 54185 [2022-07-12 14:05:00,945 INFO L226 Difference]: Without dead ends: 27133 [2022-07-12 14:05:01,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 836 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=3869, Invalid=9013, Unknown=0, NotChecked=0, Total=12882 [2022-07-12 14:05:01,021 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 626 mSDsluCounter, 41136 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 42666 SdHoareTripleChecker+Invalid, 2873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-12 14:05:01,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 42666 Invalid, 2873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-12 14:05:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27133 states. [2022-07-12 14:05:02,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27133 to 27051. [2022-07-12 14:05:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27051 states, 19170 states have (on average 1.3099113197704746) internal successors, (25111), 19871 states have internal predecessors, (25111), 6049 states have call successors, (6049), 1800 states have call predecessors, (6049), 1831 states have return successors, (6390), 5799 states have call predecessors, (6390), 6046 states have call successors, (6390) [2022-07-12 14:05:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27051 states to 27051 states and 37550 transitions. [2022-07-12 14:05:02,166 INFO L78 Accepts]: Start accepts. Automaton has 27051 states and 37550 transitions. Word has length 443 [2022-07-12 14:05:02,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:05:02,167 INFO L495 AbstractCegarLoop]: Abstraction has 27051 states and 37550 transitions. [2022-07-12 14:05:02,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.34) internal successors, (267), 50 states have internal predecessors, (267), 2 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (54), 2 states have call predecessors, (54), 2 states have call successors, (54) [2022-07-12 14:05:02,167 INFO L276 IsEmpty]: Start isEmpty. Operand 27051 states and 37550 transitions. [2022-07-12 14:05:02,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2022-07-12 14:05:02,187 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:05:02,188 INFO L195 NwaCegarLoop]: trace histogram [142, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:05:02,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-07-12 14:05:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:05:02,404 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:05:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:05:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -970034819, now seen corresponding path program 3 times [2022-07-12 14:05:02,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:05:02,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142123559] [2022-07-12 14:05:02,407 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 14:05:02,407 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:05:02,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:05:02,414 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) [2022-07-12 14:05:02,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-12 14:05:34,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-12 14:05:34,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 14:05:34,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 14:05:34,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:05:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10854 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10843 trivial. 0 not checked. [2022-07-12 14:05:34,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 14:05:34,467 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:05:34,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142123559] [2022-07-12 14:05:34,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142123559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 14:05:34,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 14:05:34,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 14:05:34,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876698836] [2022-07-12 14:05:34,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 14:05:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 14:05:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:05:34,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 14:05:34,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 14:05:34,469 INFO L87 Difference]: Start difference. First operand 27051 states and 37550 transitions. Second operand has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-12 14:05:36,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 14:05:36,059 INFO L93 Difference]: Finished difference Result 54880 states and 77020 transitions. [2022-07-12 14:05:36,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 14:05:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 515 [2022-07-12 14:05:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 14:05:36,177 INFO L225 Difference]: With dead ends: 54880 [2022-07-12 14:05:36,178 INFO L226 Difference]: Without dead ends: 27860 [2022-07-12 14:05:36,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 513 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 14:05:36,253 INFO L413 NwaCegarLoop]: 2246 mSDtfsCounter, 1301 mSDsluCounter, 5174 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 7420 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 14:05:36,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 7420 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 14:05:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27860 states. [2022-07-12 14:05:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27860 to 22755. [2022-07-12 14:05:37,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22755 states, 15806 states have (on average 1.3062760976844237) internal successors, (20647), 16463 states have internal predecessors, (20647), 5291 states have call successors, (5291), 1646 states have call predecessors, (5291), 1657 states have return successors, (5534), 5031 states have call predecessors, (5534), 5290 states have call successors, (5534) [2022-07-12 14:05:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22755 states to 22755 states and 31472 transitions. [2022-07-12 14:05:37,269 INFO L78 Accepts]: Start accepts. Automaton has 22755 states and 31472 transitions. Word has length 515 [2022-07-12 14:05:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 14:05:37,270 INFO L495 AbstractCegarLoop]: Abstraction has 22755 states and 31472 transitions. [2022-07-12 14:05:37,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2022-07-12 14:05:37,270 INFO L276 IsEmpty]: Start isEmpty. Operand 22755 states and 31472 transitions. [2022-07-12 14:05:37,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2022-07-12 14:05:37,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 14:05:37,303 INFO L195 NwaCegarLoop]: trace histogram [142, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 14:05:37,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-12 14:05:37,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 14:05:37,531 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 14:05:37,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 14:05:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 530717614, now seen corresponding path program 1 times [2022-07-12 14:05:37,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 14:05:37,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993805061] [2022-07-12 14:05:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 14:05:37,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 14:05:37,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 14:05:37,536 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) [2022-07-12 14:05:37,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-12 14:05:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 14:05:42,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 4917 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-12 14:05:42,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 14:05:48,575 INFO L134 CoverageAnalysis]: Checked inductivity of 10918 backedges. 5161 proven. 1081 refuted. 0 times theorem prover too weak. 4676 trivial. 0 not checked. [2022-07-12 14:05:48,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 14:06:11,801 INFO L134 CoverageAnalysis]: Checked inductivity of 10918 backedges. 244 proven. 5523 refuted. 0 times theorem prover too weak. 5151 trivial. 0 not checked. [2022-07-12 14:06:11,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 14:06:11,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993805061] [2022-07-12 14:06:11,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993805061] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 14:06:11,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 14:06:11,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-07-12 14:06:11,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374883657] [2022-07-12 14:06:11,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 14:06:11,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-07-12 14:06:11,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 14:06:11,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-07-12 14:06:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=7009, Unknown=0, NotChecked=0, Total=9506 [2022-07-12 14:06:11,806 INFO L87 Difference]: Start difference. First operand 22755 states and 31472 transitions. Second operand has 98 states, 98 states have (on average 3.4693877551020407) internal successors, (340), 98 states have internal predecessors, (340), 2 states have call successors, (81), 2 states have call predecessors, (81), 4 states have return successors, (82), 2 states have call predecessors, (82), 2 states have call successors, (82)