./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:36:06,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:36:06,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:36:06,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:36:06,077 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:36:06,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:36:06,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:36:06,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:36:06,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:36:06,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:36:06,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:36:06,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:36:06,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:36:06,094 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:36:06,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:36:06,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:36:06,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:36:06,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:36:06,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:36:06,104 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:36:06,105 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:36:06,106 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:36:06,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:36:06,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:36:06,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:36:06,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:36:06,122 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:36:06,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:36:06,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:36:06,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:36:06,124 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:36:06,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:36:06,125 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:36:06,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:36:06,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:36:06,127 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:36:06,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:36:06,128 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:36:06,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:36:06,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:36:06,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:36:06,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:36:06,136 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:36:06,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:36:06,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:36:06,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:36:06,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:36:06,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:36:06,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:36:06,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:36:06,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:36:06,159 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:36:06,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:36:06,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:36:06,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:36:06,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:36:06,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:36:06,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:36:06,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:36:06,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:36:06,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:36:06,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:36:06,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-21 12:36:06,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:36:06,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:36:06,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:36:06,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:36:06,482 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:36:06,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-21 12:36:06,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1624fce/496a99cd77074a0997d1f590a31e9bb3/FLAGcc3b4b3c7 [2022-07-21 12:36:07,158 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:36:07,159 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-21 12:36:07,201 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1624fce/496a99cd77074a0997d1f590a31e9bb3/FLAGcc3b4b3c7 [2022-07-21 12:36:07,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1624fce/496a99cd77074a0997d1f590a31e9bb3 [2022-07-21 12:36:07,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:36:07,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:36:07,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:36:07,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:36:07,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:36:07,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:36:07" (1/1) ... [2022-07-21 12:36:07,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@273a837b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:07, skipping insertion in model container [2022-07-21 12:36:07,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:36:07" (1/1) ... [2022-07-21 12:36:07,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:36:07,421 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:36:08,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-21 12:36:08,997 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:36:09,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:36:09,022 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:36:09,238 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 12:36:09,244 INFO L158 Benchmark]: Toolchain (without parser) took 1933.69ms. Allocated memory was 67.1MB in the beginning and 130.0MB in the end (delta: 62.9MB). Free memory was 45.5MB in the beginning and 71.5MB in the end (delta: -26.0MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-07-21 12:36:09,245 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:36:09,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1931.24ms. Allocated memory was 67.1MB in the beginning and 130.0MB in the end (delta: 62.9MB). Free memory was 45.3MB in the beginning and 71.5MB in the end (delta: -26.2MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-07-21 12:36:09,247 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 67.1MB. Free memory was 47.6MB in the beginning and 47.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1931.24ms. Allocated memory was 67.1MB in the beginning and 130.0MB in the end (delta: 62.9MB). Free memory was 45.3MB in the beginning and 71.5MB in the end (delta: -26.2MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:36:10,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:36:10,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:36:10,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:36:10,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:36:10,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:36:10,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:36:10,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:36:10,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:36:10,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:36:10,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:36:10,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:36:10,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:36:10,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:36:10,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:36:10,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:36:10,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:36:10,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:36:10,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:36:10,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:36:10,994 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:36:10,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:36:10,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:36:10,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:36:10,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:36:11,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:36:11,004 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:36:11,004 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:36:11,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:36:11,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:36:11,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:36:11,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:36:11,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:36:11,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:36:11,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:36:11,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:36:11,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:36:11,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:36:11,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:36:11,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:36:11,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:36:11,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:36:11,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:36:11,060 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:36:11,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:36:11,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:36:11,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:36:11,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:36:11,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:36:11,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:36:11,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:36:11,062 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:36:11,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:36:11,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:36:11,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:36:11,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:36:11,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:36:11,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:36:11,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:36:11,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:36:11,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:36:11,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:36:11,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:36:11,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:36:11,067 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a1e17c33569fa40e536cd8c869720d5a80d6c0d7c343e9efbe1ac963f2ae01b [2022-07-21 12:36:11,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:36:11,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:36:11,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:36:11,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:36:11,402 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:36:11,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-21 12:36:11,455 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf150d77/51b2cf56212b4cad91d00ff6a2dfbba6/FLAG5d334b67d [2022-07-21 12:36:12,086 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:36:12,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-21 12:36:12,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf150d77/51b2cf56212b4cad91d00ff6a2dfbba6/FLAG5d334b67d [2022-07-21 12:36:12,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bf150d77/51b2cf56212b4cad91d00ff6a2dfbba6 [2022-07-21 12:36:12,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:36:12,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:36:12,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:36:12,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:36:12,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:36:12,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:36:12" (1/1) ... [2022-07-21 12:36:12,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff5e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:12, skipping insertion in model container [2022-07-21 12:36:12,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:36:12" (1/1) ... [2022-07-21 12:36:12,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:36:12,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:36:14,075 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-21 12:36:14,111 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:36:14,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:36:14,154 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:36:14,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:36:14,447 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-21 12:36:14,453 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:36:14,456 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:36:14,471 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:36:14,777 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i[321673,321686] [2022-07-21 12:36:14,780 WARN L611 FunctionHandler]: implicit declaration of function ldv_xmalloc [2022-07-21 12:36:14,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:36:14,845 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:36:14,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14 WrapperNode [2022-07-21 12:36:14,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:36:14,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:36:14,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:36:14,848 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:36:14,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:14,929 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,101 INFO L137 Inliner]: procedures = 266, calls = 2297, calls flagged for inlining = 114, calls inlined = 111, statements flattened = 5915 [2022-07-21 12:36:15,102 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:36:15,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:36:15,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:36:15,102 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:36:15,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,316 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:36:15,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:36:15,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:36:15,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:36:15,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (1/1) ... [2022-07-21 12:36:15,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:36:15,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:36:15,362 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) [2022-07-21 12:36:15,379 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 [2022-07-21 12:36:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure atm_charge [2022-07-21 12:36:15,391 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_charge [2022-07-21 12:36:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:36:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:36:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-21 12:36:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-21 12:36:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure process_tsq [2022-07-21 12:36:15,392 INFO L138 BoogieDeclarations]: Found implementation of procedure process_tsq [2022-07-21 12:36:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:36:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:36:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-21 12:36:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-21 12:36:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:36:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:36:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:36:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:36:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:36:15,393 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:36:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-21 12:36:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-21 12:36:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure ns_open [2022-07-21 12:36:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_open [2022-07-21 12:36:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-21 12:36:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-21 12:36:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 12:36:15,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 12:36:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ns_read_sram [2022-07-21 12:36:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_read_sram [2022-07-21 12:36:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure get_scq [2022-07-21 12:36:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure get_scq [2022-07-21 12:36:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:36:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:36:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_rx_buf [2022-07-21 12:36:15,395 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_rx_buf [2022-07-21 12:36:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-07-21 12:36:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-07-21 12:36:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:36:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:36:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __net_timestamp [2022-07-21 12:36:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __net_timestamp [2022-07-21 12:36:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-21 12:36:15,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~$Pointer$~TO~C_INT [2022-07-21 12:36:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2022-07-21 12:36:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2022-07-21 12:36:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 12:36:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 12:36:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:36:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:36:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:36:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:36:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 12:36:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 12:36:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure ns_ioctl [2022-07-21 12:36:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_ioctl [2022-07-21 12:36:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2022-07-21 12:36:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2022-07-21 12:36:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:36:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 12:36:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 12:36:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure process_rsq [2022-07-21 12:36:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure process_rsq [2022-07-21 12:36:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:36:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2022-07-21 12:36:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-21 12:36:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-21 12:36:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:36:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:36:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_alloc_skb [2022-07-21 12:36:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_alloc_skb [2022-07-21 12:36:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:36:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:36:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-07-21 12:36:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add [2022-07-21 12:36:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:36:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure dequeue_sm_buf [2022-07-21 12:36:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure dequeue_sm_buf [2022-07-21 12:36:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:36:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-07-21 12:36:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-07-21 12:36:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:36:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 12:36:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-07-21 12:36:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-07-21 12:36:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 12:36:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 12:36:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure push_rxbufs [2022-07-21 12:36:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure push_rxbufs [2022-07-21 12:36:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_get [2022-07-21 12:36:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_get [2022-07-21 12:36:15,403 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-07-21 12:36:15,403 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-07-21 12:36:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 12:36:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 12:36:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2022-07-21 12:36:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2022-07-21 12:36:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure ns_close [2022-07-21 12:36:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_close [2022-07-21 12:36:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 12:36:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 12:36:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-07-21 12:36:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-07-21 12:36:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2022-07-21 12:36:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2022-07-21 12:36:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_read_eprom [2022-07-21 12:36:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_read_eprom [2022-07-21 12:36:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:36:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:36:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure ns_phy_put [2022-07-21 12:36:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_phy_put [2022-07-21 12:36:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 12:36:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 12:36:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 12:36:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 12:36:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iov_buf [2022-07-21 12:36:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iov_buf [2022-07-21 12:36:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-21 12:36:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-21 12:36:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:36:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:36:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-07-21 12:36:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-07-21 12:36:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-07-21 12:36:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure ns_send [2022-07-21 12:36:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_send [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure __udelay [2022-07-21 12:36:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __udelay [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:36:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:36:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2022-07-21 12:36:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2022-07-21 12:36:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-21 12:36:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-21 12:36:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:36:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:36:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure __read_once_size [2022-07-21 12:36:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __read_once_size [2022-07-21 12:36:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:36:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:36:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:36:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:36:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:36:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2022-07-21 12:36:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2022-07-21 12:36:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2022-07-21 12:36:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2022-07-21 12:36:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure idr_find [2022-07-21 12:36:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_find [2022-07-21 12:36:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:36:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-07-21 12:36:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-07-21 12:36:15,411 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 12:36:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-07-21 12:36:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-07-21 12:36:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-07-21 12:36:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:36:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-21 12:36:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-21 12:36:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure free_scq [2022-07-21 12:36:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure free_scq [2022-07-21 12:36:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure idr_alloc [2022-07-21 12:36:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_alloc [2022-07-21 12:36:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2022-07-21 12:36:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2022-07-21 12:36:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure recycle_iovec_rx_bufs [2022-07-21 12:36:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure recycle_iovec_rx_bufs [2022-07-21 12:36:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 12:36:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 12:36:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure nicstar_remove_one [2022-07-21 12:36:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure nicstar_remove_one [2022-07-21 12:36:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-21 12:36:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-21 12:36:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 12:36:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 12:36:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-07-21 12:36:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-07-21 12:36:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure ns_init_card_error [2022-07-21 12:36:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_init_card_error [2022-07-21 12:36:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-21 12:36:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-21 12:36:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-21 12:36:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-21 12:36:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 12:36:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 12:36:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure ns_write_sram [2022-07-21 12:36:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ns_write_sram [2022-07-21 12:36:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-21 12:36:15,416 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-21 12:36:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:36:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 12:36:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-07-21 12:36:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-21 12:36:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-21 12:36:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-21 12:36:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-21 12:36:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:36:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:36:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-21 12:36:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-21 12:36:16,011 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:36:16,015 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:36:19,327 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:37:16,137 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:37:16,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:37:16,161 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 12:37:16,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:37:16 BoogieIcfgContainer [2022-07-21 12:37:16,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:37:16,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:37:16,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:37:16,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:37:16,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:36:12" (1/3) ... [2022-07-21 12:37:16,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ab6840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:37:16, skipping insertion in model container [2022-07-21 12:37:16,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:36:14" (2/3) ... [2022-07-21 12:37:16,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ab6840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:37:16, skipping insertion in model container [2022-07-21 12:37:16,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:37:16" (3/3) ... [2022-07-21 12:37:16,173 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--atm--nicstar.ko-entry_point.cil.out.i [2022-07-21 12:37:16,185 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:37:16,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:37:16,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:37:16,271 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@2e8fcd7f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4bacfdb7 [2022-07-21 12:37:16,271 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:37:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) [2022-07-21 12:37:16,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 12:37:16,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:16,304 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:16,305 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:16,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash 703457863, now seen corresponding path program 1 times [2022-07-21 12:37:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228008398] [2022-07-21 12:37:16,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:16,323 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:16,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:16,327 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) [2022-07-21 12:37:16,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:37:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 12:37:17,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-21 12:37:17,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:17,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:17,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228008398] [2022-07-21 12:37:17,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228008398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:17,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:17,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:37:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020172114] [2022-07-21 12:37:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:17,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 12:37:17,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:17,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 12:37:17,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:37:17,441 INFO L87 Difference]: Start difference. First operand has 2029 states, 1373 states have (on average 1.3466860888565186) internal successors, (1849), 1444 states have internal predecessors, (1849), 569 states have call successors, (569), 90 states have call predecessors, (569), 89 states have return successors, (563), 552 states have call predecessors, (563), 563 states have call successors, (563) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:37:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:17,626 INFO L93 Difference]: Finished difference Result 4041 states and 6043 transitions. [2022-07-21 12:37:17,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 12:37:17,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 149 [2022-07-21 12:37:17,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:17,655 INFO L225 Difference]: With dead ends: 4041 [2022-07-21 12:37:17,655 INFO L226 Difference]: Without dead ends: 1993 [2022-07-21 12:37:17,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 12:37:17,681 INFO L413 NwaCegarLoop]: 2953 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2953 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:37:17,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2022-07-21 12:37:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1993. [2022-07-21 12:37:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1993 states, 1345 states have (on average 1.3405204460966542) internal successors, (1803), 1406 states have internal predecessors, (1803), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-21 12:37:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1993 states to 1993 states and 2920 transitions. [2022-07-21 12:37:17,814 INFO L78 Accepts]: Start accepts. Automaton has 1993 states and 2920 transitions. Word has length 149 [2022-07-21 12:37:17,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:17,815 INFO L495 AbstractCegarLoop]: Abstraction has 1993 states and 2920 transitions. [2022-07-21 12:37:17,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:37:17,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1993 states and 2920 transitions. [2022-07-21 12:37:17,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-21 12:37:17,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:17,821 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:17,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 12:37:18,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:18,034 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:18,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:18,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1341829763, now seen corresponding path program 1 times [2022-07-21 12:37:18,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:18,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780196084] [2022-07-21 12:37:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:18,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:18,038 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) [2022-07-21 12:37:18,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:37:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:37:19,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:19,478 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-07-21 12:37:19,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:19,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:19,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780196084] [2022-07-21 12:37:19,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780196084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:19,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:19,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:37:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343561798] [2022-07-21 12:37:19,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:19,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:37:19,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:19,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:37:19,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:37:19,485 INFO L87 Difference]: Start difference. First operand 1993 states and 2920 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 12:37:20,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:20,051 INFO L93 Difference]: Finished difference Result 3978 states and 5831 transitions. [2022-07-21 12:37:20,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:37:20,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 149 [2022-07-21 12:37:20,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:20,064 INFO L225 Difference]: With dead ends: 3978 [2022-07-21 12:37:20,064 INFO L226 Difference]: Without dead ends: 1994 [2022-07-21 12:37:20,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:37:20,078 INFO L413 NwaCegarLoop]: 2913 mSDtfsCounter, 6 mSDsluCounter, 11634 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:20,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:37:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1994 states. [2022-07-21 12:37:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1994 to 1994. [2022-07-21 12:37:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1346 states have (on average 1.3402674591381871) internal successors, (1804), 1407 states have internal predecessors, (1804), 559 states have call successors, (559), 89 states have call predecessors, (559), 88 states have return successors, (558), 547 states have call predecessors, (558), 558 states have call successors, (558) [2022-07-21 12:37:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2921 transitions. [2022-07-21 12:37:20,157 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2921 transitions. Word has length 149 [2022-07-21 12:37:20,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:20,160 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2921 transitions. [2022-07-21 12:37:20,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-21 12:37:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2921 transitions. [2022-07-21 12:37:20,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 12:37:20,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:20,163 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:20,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:20,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash -899632067, now seen corresponding path program 1 times [2022-07-21 12:37:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:20,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196883352] [2022-07-21 12:37:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:20,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:20,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:20,388 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) [2022-07-21 12:37:20,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:37:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:21,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 1202 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 12:37:21,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2022-07-21 12:37:21,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-21 12:37:22,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:22,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196883352] [2022-07-21 12:37:22,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196883352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:22,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:22,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-21 12:37:22,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656044876] [2022-07-21 12:37:22,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 12:37:22,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 12:37:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:37:22,983 INFO L87 Difference]: Start difference. First operand 1994 states and 2921 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 12:37:23,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:23,964 INFO L93 Difference]: Finished difference Result 3990 states and 5847 transitions. [2022-07-21 12:37:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 12:37:23,965 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2022-07-21 12:37:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:23,981 INFO L225 Difference]: With dead ends: 3990 [2022-07-21 12:37:23,983 INFO L226 Difference]: Without dead ends: 2010 [2022-07-21 12:37:23,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:37:23,997 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 12 mSDsluCounter, 11640 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 14555 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:23,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 14555 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:37:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-07-21 12:37:24,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-07-21 12:37:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1357 states have (on average 1.3382461311717022) internal successors, (1816), 1418 states have internal predecessors, (1816), 561 states have call successors, (561), 92 states have call predecessors, (561), 91 states have return successors, (560), 549 states have call predecessors, (560), 560 states have call successors, (560) [2022-07-21 12:37:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2937 transitions. [2022-07-21 12:37:24,068 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2937 transitions. Word has length 153 [2022-07-21 12:37:24,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:24,070 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2937 transitions. [2022-07-21 12:37:24,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 11 states have internal predecessors, (67), 4 states have call successors, (21), 2 states have call predecessors, (21), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-21 12:37:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2937 transitions. [2022-07-21 12:37:24,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 12:37:24,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:24,072 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:24,106 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:24,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:24,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:24,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:24,291 INFO L85 PathProgramCache]: Analyzing trace with hash -437318811, now seen corresponding path program 2 times [2022-07-21 12:37:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:24,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279542173] [2022-07-21 12:37:24,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:37:24,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:24,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:24,294 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) [2022-07-21 12:37:24,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:37:25,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:37:25,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:37:25,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 856 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:37:25,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:25,206 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2022-07-21 12:37:25,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:25,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:25,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279542173] [2022-07-21 12:37:25,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279542173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:25,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:25,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:37:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560957631] [2022-07-21 12:37:25,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:37:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:37:25,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:37:25,208 INFO L87 Difference]: Start difference. First operand 2010 states and 2937 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 12:37:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:25,433 INFO L93 Difference]: Finished difference Result 5482 states and 7998 transitions. [2022-07-21 12:37:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:37:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 156 [2022-07-21 12:37:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:25,486 INFO L225 Difference]: With dead ends: 5482 [2022-07-21 12:37:25,486 INFO L226 Difference]: Without dead ends: 3509 [2022-07-21 12:37:25,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:37:25,496 INFO L413 NwaCegarLoop]: 3440 mSDtfsCounter, 2194 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 6313 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:25,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2194 Valid, 6313 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:37:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3509 states. [2022-07-21 12:37:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3509 to 3505. [2022-07-21 12:37:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2376 states have (on average 1.3434343434343434) internal successors, (3192), 2486 states have internal predecessors, (3192), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-21 12:37:25,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 5103 transitions. [2022-07-21 12:37:25,601 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 5103 transitions. Word has length 156 [2022-07-21 12:37:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:25,603 INFO L495 AbstractCegarLoop]: Abstraction has 3505 states and 5103 transitions. [2022-07-21 12:37:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-21 12:37:25,603 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 5103 transitions. [2022-07-21 12:37:25,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-21 12:37:25,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:25,606 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:25,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-21 12:37:25,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:25,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:25,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1645701321, now seen corresponding path program 1 times [2022-07-21 12:37:25,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:25,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974521618] [2022-07-21 12:37:25,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:25,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:25,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:25,840 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) [2022-07-21 12:37:25,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:37:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:27,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:37:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 48 proven. 3 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-21 12:37:27,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:28,984 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-07-21 12:37:28,984 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:28,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974521618] [2022-07-21 12:37:28,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974521618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:28,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:28,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-21 12:37:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219526875] [2022-07-21 12:37:28,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:28,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 12:37:28,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:28,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 12:37:28,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-21 12:37:28,986 INFO L87 Difference]: Start difference. First operand 3505 states and 5103 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 12:37:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:30,303 INFO L93 Difference]: Finished difference Result 6993 states and 10187 transitions. [2022-07-21 12:37:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 12:37:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 163 [2022-07-21 12:37:30,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:30,320 INFO L225 Difference]: With dead ends: 6993 [2022-07-21 12:37:30,321 INFO L226 Difference]: Without dead ends: 3507 [2022-07-21 12:37:30,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-07-21 12:37:30,338 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 23 mSDsluCounter, 14556 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 17472 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:30,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 17472 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 12:37:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3507 states. [2022-07-21 12:37:30,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3507 to 3507. [2022-07-21 12:37:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 2378 states have (on average 1.3431455004205215) internal successors, (3194), 2488 states have internal predecessors, (3194), 956 states have call successors, (956), 173 states have call predecessors, (956), 172 states have return successors, (955), 933 states have call predecessors, (955), 955 states have call successors, (955) [2022-07-21 12:37:30,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 5105 transitions. [2022-07-21 12:37:30,469 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 5105 transitions. Word has length 163 [2022-07-21 12:37:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:30,470 INFO L495 AbstractCegarLoop]: Abstraction has 3507 states and 5105 transitions. [2022-07-21 12:37:30,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 12:37:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 5105 transitions. [2022-07-21 12:37:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-07-21 12:37:30,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:30,474 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:30,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-21 12:37:30,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:30,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:30,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1465862159, now seen corresponding path program 2 times [2022-07-21 12:37:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010119309] [2022-07-21 12:37:30,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:37:30,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:30,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:30,712 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) [2022-07-21 12:37:30,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:37:31,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:37:31,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:37:31,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:37:31,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:31,584 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2022-07-21 12:37:31,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:31,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:31,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010119309] [2022-07-21 12:37:31,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010119309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:31,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:31,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:37:31,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527708573] [2022-07-21 12:37:31,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:31,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:37:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:37:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:37:31,586 INFO L87 Difference]: Start difference. First operand 3507 states and 5105 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:37:31,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:31,996 INFO L93 Difference]: Finished difference Result 9567 states and 13917 transitions. [2022-07-21 12:37:31,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:37:31,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 166 [2022-07-21 12:37:31,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:32,026 INFO L225 Difference]: With dead ends: 9567 [2022-07-21 12:37:32,026 INFO L226 Difference]: Without dead ends: 6118 [2022-07-21 12:37:32,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:37:32,048 INFO L413 NwaCegarLoop]: 3363 mSDtfsCounter, 2353 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2353 SdHoareTripleChecker+Valid, 6148 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:32,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2353 Valid, 6148 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:37:32,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2022-07-21 12:37:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 6111. [2022-07-21 12:37:32,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6111 states, 4131 states have (on average 1.3340595497458243) internal successors, (5511), 4325 states have internal predecessors, (5511), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-21 12:37:32,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6111 states to 6111 states and 8871 transitions. [2022-07-21 12:37:32,297 INFO L78 Accepts]: Start accepts. Automaton has 6111 states and 8871 transitions. Word has length 166 [2022-07-21 12:37:32,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:32,298 INFO L495 AbstractCegarLoop]: Abstraction has 6111 states and 8871 transitions. [2022-07-21 12:37:32,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:37:32,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6111 states and 8871 transitions. [2022-07-21 12:37:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 12:37:32,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:32,301 INFO L195 NwaCegarLoop]: trace histogram [10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:32,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-21 12:37:32,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:32,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:32,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1108897071, now seen corresponding path program 1 times [2022-07-21 12:37:32,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:32,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306130979] [2022-07-21 12:37:32,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:32,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:32,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:32,539 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) [2022-07-21 12:37:32,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:37:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:33,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-21 12:37:33,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 64 proven. 6 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-21 12:37:34,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-07-21 12:37:36,111 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:36,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306130979] [2022-07-21 12:37:36,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306130979] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:36,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:36,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-07-21 12:37:36,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846858549] [2022-07-21 12:37:36,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-21 12:37:36,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:36,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-21 12:37:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-07-21 12:37:36,112 INFO L87 Difference]: Start difference. First operand 6111 states and 8871 transitions. Second operand has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 12:37:37,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:37,935 INFO L93 Difference]: Finished difference Result 12208 states and 17727 transitions. [2022-07-21 12:37:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 12:37:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 182 [2022-07-21 12:37:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:37,977 INFO L225 Difference]: With dead ends: 12208 [2022-07-21 12:37:37,977 INFO L226 Difference]: Without dead ends: 6114 [2022-07-21 12:37:38,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-07-21 12:37:38,004 INFO L413 NwaCegarLoop]: 2916 mSDtfsCounter, 21 mSDsluCounter, 23290 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26206 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:38,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26206 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-21 12:37:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6114 states. [2022-07-21 12:37:38,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6114 to 6114. [2022-07-21 12:37:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6114 states, 4134 states have (on average 1.3338171262699565) internal successors, (5514), 4328 states have internal predecessors, (5514), 1675 states have call successors, (1675), 305 states have call predecessors, (1675), 304 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-21 12:37:38,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6114 states to 6114 states and 8874 transitions. [2022-07-21 12:37:38,295 INFO L78 Accepts]: Start accepts. Automaton has 6114 states and 8874 transitions. Word has length 182 [2022-07-21 12:37:38,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:38,295 INFO L495 AbstractCegarLoop]: Abstraction has 6114 states and 8874 transitions. [2022-07-21 12:37:38,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.153846153846154) internal successors, (93), 15 states have internal predecessors, (93), 4 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-21 12:37:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 6114 states and 8874 transitions. [2022-07-21 12:37:38,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-21 12:37:38,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:38,298 INFO L195 NwaCegarLoop]: trace histogram [13, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:38,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:38,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:38,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:38,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:38,526 INFO L85 PathProgramCache]: Analyzing trace with hash 631131437, now seen corresponding path program 1 times [2022-07-21 12:37:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:38,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737717654] [2022-07-21 12:37:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:38,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:38,528 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) [2022-07-21 12:37:38,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:37:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:39,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:37:39,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 131 proven. 10 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-21 12:37:40,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 47 proven. 41 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-07-21 12:37:43,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:43,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737717654] [2022-07-21 12:37:43,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737717654] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:43,062 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:43,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-07-21 12:37:43,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438793815] [2022-07-21 12:37:43,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:43,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 12:37:43,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 12:37:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-07-21 12:37:43,064 INFO L87 Difference]: Start difference. First operand 6114 states and 8874 transitions. Second operand has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:37:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:45,076 INFO L93 Difference]: Finished difference Result 12220 states and 17741 transitions. [2022-07-21 12:37:45,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 12:37:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 188 [2022-07-21 12:37:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:45,103 INFO L225 Difference]: With dead ends: 12220 [2022-07-21 12:37:45,104 INFO L226 Difference]: Without dead ends: 6125 [2022-07-21 12:37:45,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:37:45,125 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 42 mSDsluCounter, 23285 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 26199 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:45,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 26199 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 12:37:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2022-07-21 12:37:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 6125. [2022-07-21 12:37:45,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6125 states, 4144 states have (on average 1.3334942084942085) internal successors, (5526), 4338 states have internal predecessors, (5526), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-21 12:37:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6125 states to 6125 states and 8886 transitions. [2022-07-21 12:37:45,344 INFO L78 Accepts]: Start accepts. Automaton has 6125 states and 8886 transitions. Word has length 188 [2022-07-21 12:37:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:45,345 INFO L495 AbstractCegarLoop]: Abstraction has 6125 states and 8886 transitions. [2022-07-21 12:37:45,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.533333333333333) internal successors, (98), 17 states have internal predecessors, (98), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:37:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 6125 states and 8886 transitions. [2022-07-21 12:37:45,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-21 12:37:45,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:45,347 INFO L195 NwaCegarLoop]: trace histogram [15, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:45,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:45,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:45,569 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:45,570 INFO L85 PathProgramCache]: Analyzing trace with hash 141595824, now seen corresponding path program 1 times [2022-07-21 12:37:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:45,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342938693] [2022-07-21 12:37:45,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:37:45,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:45,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:45,572 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) [2022-07-21 12:37:45,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:37:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:37:46,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 12:37:46,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 156 proven. 15 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-21 12:37:47,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:37:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 54 proven. 57 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-21 12:37:50,566 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:50,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342938693] [2022-07-21 12:37:50,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342938693] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:37:50,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:37:50,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-21 12:37:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514448054] [2022-07-21 12:37:50,566 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:37:50,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 12:37:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 12:37:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-07-21 12:37:50,567 INFO L87 Difference]: Start difference. First operand 6125 states and 8886 transitions. Second operand has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:37:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:53,049 INFO L93 Difference]: Finished difference Result 12215 states and 17732 transitions. [2022-07-21 12:37:53,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-21 12:37:53,050 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2022-07-21 12:37:53,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:53,075 INFO L225 Difference]: With dead ends: 12215 [2022-07-21 12:37:53,075 INFO L226 Difference]: Without dead ends: 6128 [2022-07-21 12:37:53,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2022-07-21 12:37:53,102 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 26193 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 29107 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:53,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 29107 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 12:37:53,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6128 states. [2022-07-21 12:37:53,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6128 to 6128. [2022-07-21 12:37:53,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6128 states, 4147 states have (on average 1.333252953942609) internal successors, (5529), 4341 states have internal predecessors, (5529), 1675 states have call successors, (1675), 306 states have call predecessors, (1675), 305 states have return successors, (1685), 1628 states have call predecessors, (1685), 1674 states have call successors, (1685) [2022-07-21 12:37:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6128 states to 6128 states and 8889 transitions. [2022-07-21 12:37:53,287 INFO L78 Accepts]: Start accepts. Automaton has 6128 states and 8889 transitions. Word has length 189 [2022-07-21 12:37:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:53,288 INFO L495 AbstractCegarLoop]: Abstraction has 6128 states and 8889 transitions. [2022-07-21 12:37:53,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.823529411764706) internal successors, (99), 19 states have internal predecessors, (99), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:37:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 6128 states and 8889 transitions. [2022-07-21 12:37:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-21 12:37:53,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:53,291 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:53,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:53,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:53,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:53,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1302833676, now seen corresponding path program 2 times [2022-07-21 12:37:53,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:53,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931039451] [2022-07-21 12:37:53,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:37:53,518 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:53,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:53,519 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) [2022-07-21 12:37:53,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:37:54,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:37:54,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:37:54,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:37:54,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-21 12:37:56,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:56,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931039451] [2022-07-21 12:37:56,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931039451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:56,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:56,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:37:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690151804] [2022-07-21 12:37:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:56,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:37:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:37:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:37:56,101 INFO L87 Difference]: Start difference. First operand 6128 states and 8889 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:37:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:37:56,674 INFO L93 Difference]: Finished difference Result 18288 states and 26689 transitions. [2022-07-21 12:37:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:37:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-21 12:37:56,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:37:56,727 INFO L225 Difference]: With dead ends: 18288 [2022-07-21 12:37:56,728 INFO L226 Difference]: Without dead ends: 12229 [2022-07-21 12:37:56,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:37:56,797 INFO L413 NwaCegarLoop]: 4071 mSDtfsCounter, 2890 mSDsluCounter, 11009 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 15080 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:37:56,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 15080 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:37:56,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-07-21 12:37:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12214. [2022-07-21 12:37:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12214 states, 8268 states have (on average 1.332970488630866) internal successors, (11021), 8660 states have internal predecessors, (11021), 3335 states have call successors, (3335), 607 states have call predecessors, (3335), 610 states have return successors, (3428), 3242 states have call predecessors, (3428), 3334 states have call successors, (3428) [2022-07-21 12:37:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12214 states to 12214 states and 17784 transitions. [2022-07-21 12:37:57,189 INFO L78 Accepts]: Start accepts. Automaton has 12214 states and 17784 transitions. Word has length 191 [2022-07-21 12:37:57,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:37:57,190 INFO L495 AbstractCegarLoop]: Abstraction has 12214 states and 17784 transitions. [2022-07-21 12:37:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:37:57,190 INFO L276 IsEmpty]: Start isEmpty. Operand 12214 states and 17784 transitions. [2022-07-21 12:37:57,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-21 12:37:57,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:37:57,193 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:37:57,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:37:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:37:57,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:37:57,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:37:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash -261359955, now seen corresponding path program 2 times [2022-07-21 12:37:57,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:37:57,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776557594] [2022-07-21 12:37:57,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:37:57,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:37:57,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:37:57,423 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) [2022-07-21 12:37:57,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:37:58,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:37:58,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:37:58,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:37:58,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:37:59,952 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2022-07-21 12:37:59,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:37:59,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:37:59,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776557594] [2022-07-21 12:37:59,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776557594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:37:59,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:37:59,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:37:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113774246] [2022-07-21 12:37:59,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:37:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:37:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:37:59,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:37:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:37:59,955 INFO L87 Difference]: Start difference. First operand 12214 states and 17784 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:00,849 INFO L93 Difference]: Finished difference Result 36568 states and 53502 transitions. [2022-07-21 12:38:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:38:00,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-21 12:38:00,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:01,022 INFO L225 Difference]: With dead ends: 36568 [2022-07-21 12:38:01,022 INFO L226 Difference]: Without dead ends: 24423 [2022-07-21 12:38:01,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:38:01,070 INFO L413 NwaCegarLoop]: 3490 mSDtfsCounter, 2891 mSDsluCounter, 9847 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 13337 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:01,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2891 Valid, 13337 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:38:01,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24423 states. [2022-07-21 12:38:01,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24423 to 24396. [2022-07-21 12:38:01,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24396 states, 16520 states have (on average 1.3325665859564164) internal successors, (22014), 17304 states have internal predecessors, (22014), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-21 12:38:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24396 states to 24396 states and 35615 transitions. [2022-07-21 12:38:01,912 INFO L78 Accepts]: Start accepts. Automaton has 24396 states and 35615 transitions. Word has length 192 [2022-07-21 12:38:01,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:01,912 INFO L495 AbstractCegarLoop]: Abstraction has 24396 states and 35615 transitions. [2022-07-21 12:38:01,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:01,913 INFO L276 IsEmpty]: Start isEmpty. Operand 24396 states and 35615 transitions. [2022-07-21 12:38:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 12:38:01,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:01,915 INFO L195 NwaCegarLoop]: trace histogram [17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:01,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:02,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:02,134 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:02,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:02,134 INFO L85 PathProgramCache]: Analyzing trace with hash 304099754, now seen corresponding path program 1 times [2022-07-21 12:38:02,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934865842] [2022-07-21 12:38:02,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:02,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:02,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:02,138 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) [2022-07-21 12:38:02,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:38:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:03,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 12:38:03,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 183 proven. 21 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2022-07-21 12:38:04,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:38:08,165 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 61 proven. 76 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-21 12:38:08,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:08,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934865842] [2022-07-21 12:38:08,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934865842] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:38:08,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:38:08,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-07-21 12:38:08,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485932726] [2022-07-21 12:38:08,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:38:08,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 12:38:08,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:08,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 12:38:08,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-21 12:38:08,167 INFO L87 Difference]: Start difference. First operand 24396 states and 35615 transitions. Second operand has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:38:11,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:11,643 INFO L93 Difference]: Finished difference Result 48775 states and 71214 transitions. [2022-07-21 12:38:11,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 12:38:11,644 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2022-07-21 12:38:11,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:11,730 INFO L225 Difference]: With dead ends: 48775 [2022-07-21 12:38:11,730 INFO L226 Difference]: Without dead ends: 24405 [2022-07-21 12:38:11,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2022-07-21 12:38:11,821 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 43 mSDsluCounter, 37832 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40746 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:11,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40746 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 12:38:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24405 states. [2022-07-21 12:38:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24405 to 24405. [2022-07-21 12:38:12,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24405 states, 16529 states have (on average 1.3323855042652308) internal successors, (22023), 17313 states have internal predecessors, (22023), 6655 states have call successors, (6655), 1213 states have call predecessors, (6655), 1220 states have return successors, (6946), 6470 states have call predecessors, (6946), 6654 states have call successors, (6946) [2022-07-21 12:38:12,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24405 states to 24405 states and 35624 transitions. [2022-07-21 12:38:12,669 INFO L78 Accepts]: Start accepts. Automaton has 24405 states and 35624 transitions. Word has length 190 [2022-07-21 12:38:12,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:12,670 INFO L495 AbstractCegarLoop]: Abstraction has 24405 states and 35624 transitions. [2022-07-21 12:38:12,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 21 states have internal predecessors, (100), 4 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-21 12:38:12,670 INFO L276 IsEmpty]: Start isEmpty. Operand 24405 states and 35624 transitions. [2022-07-21 12:38:12,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-21 12:38:12,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:12,673 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:12,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-21 12:38:12,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:12,896 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash -35486458, now seen corresponding path program 2 times [2022-07-21 12:38:12,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343436392] [2022-07-21 12:38:12,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:38:12,897 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:12,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:12,899 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) [2022-07-21 12:38:12,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:38:13,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:38:13,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:38:13,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 883 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:38:13,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:15,792 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-21 12:38:15,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:15,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:15,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343436392] [2022-07-21 12:38:15,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343436392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:15,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:15,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:38:15,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897584929] [2022-07-21 12:38:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:38:15,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:15,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:38:15,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:38:15,799 INFO L87 Difference]: Start difference. First operand 24405 states and 35624 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:17,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:17,256 INFO L93 Difference]: Finished difference Result 73191 states and 107286 transitions. [2022-07-21 12:38:17,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:38:17,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 192 [2022-07-21 12:38:17,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:17,485 INFO L225 Difference]: With dead ends: 73191 [2022-07-21 12:38:17,485 INFO L226 Difference]: Without dead ends: 48856 [2022-07-21 12:38:17,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:38:17,604 INFO L413 NwaCegarLoop]: 4073 mSDtfsCounter, 2889 mSDsluCounter, 11013 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2889 SdHoareTripleChecker+Valid, 15086 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:17,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2889 Valid, 15086 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:38:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48856 states. [2022-07-21 12:38:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48856 to 48805. [2022-07-21 12:38:19,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48805 states, 33061 states have (on average 1.331447929584707) internal successors, (44019), 34629 states have internal predecessors, (44019), 13295 states have call successors, (13295), 2433 states have call predecessors, (13295), 2448 states have return successors, (14070), 12926 states have call predecessors, (14070), 13294 states have call successors, (14070) [2022-07-21 12:38:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48805 states to 48805 states and 71384 transitions. [2022-07-21 12:38:19,459 INFO L78 Accepts]: Start accepts. Automaton has 48805 states and 71384 transitions. Word has length 192 [2022-07-21 12:38:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:19,460 INFO L495 AbstractCegarLoop]: Abstraction has 48805 states and 71384 transitions. [2022-07-21 12:38:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 48805 states and 71384 transitions. [2022-07-21 12:38:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-21 12:38:19,477 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:19,477 INFO L195 NwaCegarLoop]: trace histogram [19, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:19,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:19,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:19,699 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash 597209677, now seen corresponding path program 2 times [2022-07-21 12:38:19,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367721290] [2022-07-21 12:38:19,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:38:19,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:19,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:19,702 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) [2022-07-21 12:38:19,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:38:20,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:38:20,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:38:20,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:38:20,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 441 trivial. 0 not checked. [2022-07-21 12:38:22,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:22,581 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:22,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367721290] [2022-07-21 12:38:22,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367721290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:22,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:22,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:38:22,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682327997] [2022-07-21 12:38:22,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 12:38:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 12:38:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:38:22,582 INFO L87 Difference]: Start difference. First operand 48805 states and 71384 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:25,371 INFO L93 Difference]: Finished difference Result 145775 states and 213997 transitions. [2022-07-21 12:38:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 12:38:25,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 191 [2022-07-21 12:38:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:25,867 INFO L225 Difference]: With dead ends: 145775 [2022-07-21 12:38:25,867 INFO L226 Difference]: Without dead ends: 97040 [2022-07-21 12:38:26,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:38:26,043 INFO L413 NwaCegarLoop]: 4844 mSDtfsCounter, 2890 mSDsluCounter, 12554 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2890 SdHoareTripleChecker+Valid, 17398 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:26,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2890 Valid, 17398 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 12:38:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97040 states. [2022-07-21 12:38:28,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97040 to 96531. [2022-07-21 12:38:28,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96531 states, 65361 states have (on average 1.3318339682685394) internal successors, (87050), 68549 states have internal predecessors, (87050), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-21 12:38:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96531 states to 96531 states and 141589 transitions. [2022-07-21 12:38:29,707 INFO L78 Accepts]: Start accepts. Automaton has 96531 states and 141589 transitions. Word has length 191 [2022-07-21 12:38:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 96531 states and 141589 transitions. [2022-07-21 12:38:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 12:38:29,717 INFO L276 IsEmpty]: Start isEmpty. Operand 96531 states and 141589 transitions. [2022-07-21 12:38:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-21 12:38:29,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:29,725 INFO L195 NwaCegarLoop]: trace histogram [19, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:29,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 12:38:29,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:29,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash -132391511, now seen corresponding path program 1 times [2022-07-21 12:38:29,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:29,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [355513580] [2022-07-21 12:38:29,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:38:29,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:29,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:29,928 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) [2022-07-21 12:38:29,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:38:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:38:31,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-21 12:38:31,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 282 proven. 28 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2022-07-21 12:38:32,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:38:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 515 backedges. 68 proven. 98 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-21 12:38:36,196 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:36,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [355513580] [2022-07-21 12:38:36,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [355513580] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:38:36,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:38:36,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2022-07-21 12:38:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482387964] [2022-07-21 12:38:36,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:38:36,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 12:38:36,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 12:38:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-07-21 12:38:36,197 INFO L87 Difference]: Start difference. First operand 96531 states and 141589 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 12:38:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:42,405 INFO L93 Difference]: Finished difference Result 193117 states and 283258 transitions. [2022-07-21 12:38:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 12:38:42,407 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 200 [2022-07-21 12:38:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:43,083 INFO L225 Difference]: With dead ends: 193117 [2022-07-21 12:38:43,083 INFO L226 Difference]: Without dead ends: 96564 [2022-07-21 12:38:43,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2022-07-21 12:38:43,543 INFO L413 NwaCegarLoop]: 2914 mSDtfsCounter, 56 mSDsluCounter, 32019 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 34933 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:43,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 34933 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-21 12:38:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96564 states. [2022-07-21 12:38:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96564 to 96564. [2022-07-21 12:38:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96564 states, 65394 states have (on average 1.3316665137474386) internal successors, (87083), 68582 states have internal predecessors, (87083), 26319 states have call successors, (26319), 4817 states have call predecessors, (26319), 4850 states have return successors, (28220), 25510 states have call predecessors, (28220), 26318 states have call successors, (28220) [2022-07-21 12:38:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96564 states to 96564 states and 141622 transitions. [2022-07-21 12:38:47,610 INFO L78 Accepts]: Start accepts. Automaton has 96564 states and 141622 transitions. Word has length 200 [2022-07-21 12:38:47,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:38:47,611 INFO L495 AbstractCegarLoop]: Abstraction has 96564 states and 141622 transitions. [2022-07-21 12:38:47,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 4 states have call successors, (23), 2 states have call predecessors, (23), 5 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 12:38:47,611 INFO L276 IsEmpty]: Start isEmpty. Operand 96564 states and 141622 transitions. [2022-07-21 12:38:47,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-21 12:38:47,615 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:38:47,615 INFO L195 NwaCegarLoop]: trace histogram [21, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:38:47,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-07-21 12:38:47,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:38:47,839 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:38:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:38:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1489063885, now seen corresponding path program 2 times [2022-07-21 12:38:47,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:38:47,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099053132] [2022-07-21 12:38:47,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:38:47,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:38:47,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:38:47,845 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) [2022-07-21 12:38:47,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:38:48,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:38:48,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:38:48,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:38:48,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:38:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-21 12:38:50,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:38:50,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:38:50,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099053132] [2022-07-21 12:38:50,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099053132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:38:50,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:38:50,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 12:38:50,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251621111] [2022-07-21 12:38:50,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:38:50,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:38:50,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:38:50,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:38:50,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:50,819 INFO L87 Difference]: Start difference. First operand 96564 states and 141622 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 12:38:53,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:38:53,981 INFO L93 Difference]: Finished difference Result 150201 states and 220956 transitions. [2022-07-21 12:38:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:38:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 202 [2022-07-21 12:38:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:38:55,078 INFO L225 Difference]: With dead ends: 150201 [2022-07-21 12:38:55,079 INFO L226 Difference]: Without dead ends: 150198 [2022-07-21 12:38:55,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:38:55,177 INFO L413 NwaCegarLoop]: 3588 mSDtfsCounter, 2551 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 5192 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 12:38:55,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 5192 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 12:38:55,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150198 states. [2022-07-21 12:38:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150198 to 149018. [2022-07-21 12:38:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149018 states, 99766 states have (on average 1.3251708999057796) internal successors, (132207), 104792 states have internal predecessors, (132207), 40997 states have call successors, (40997), 8213 states have call predecessors, (40997), 8254 states have return successors, (45704), 39460 states have call predecessors, (45704), 40996 states have call successors, (45704) [2022-07-21 12:39:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149018 states to 149018 states and 218908 transitions. [2022-07-21 12:39:01,003 INFO L78 Accepts]: Start accepts. Automaton has 149018 states and 218908 transitions. Word has length 202 [2022-07-21 12:39:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:01,004 INFO L495 AbstractCegarLoop]: Abstraction has 149018 states and 218908 transitions. [2022-07-21 12:39:01,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-21 12:39:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 149018 states and 218908 transitions. [2022-07-21 12:39:01,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 12:39:01,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:01,022 INFO L195 NwaCegarLoop]: trace histogram [21, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:01,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:01,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:01,240 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:01,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:01,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1630107578, now seen corresponding path program 1 times [2022-07-21 12:39:01,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:01,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961706857] [2022-07-21 12:39:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:01,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:01,242 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) [2022-07-21 12:39:01,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:39:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:03,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 12:39:03,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:05,069 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-21 12:39:05,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:39:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2022-07-21 12:39:05,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:05,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961706857] [2022-07-21 12:39:05,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961706857] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 12:39:05,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 12:39:05,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2022-07-21 12:39:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668431105] [2022-07-21 12:39:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:39:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:39:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-21 12:39:05,944 INFO L87 Difference]: Start difference. First operand 149018 states and 218908 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16)