./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:29:42,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:29:42,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:29:42,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:29:42,082 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:29:42,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:29:42,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:29:42,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:29:42,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:29:42,094 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:29:42,095 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:29:42,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:29:42,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:29:42,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:29:42,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:29:42,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:29:42,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:29:42,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:29:42,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:29:42,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:29:42,112 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:29:42,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:29:42,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:29:42,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:29:42,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:29:42,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:29:42,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:29:42,119 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:29:42,120 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:29:42,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:29:42,121 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:29:42,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:29:42,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:29:42,123 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:29:42,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:29:42,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:29:42,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:29:42,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:29:42,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:29:42,125 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:29:42,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:29:42,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:29:42,129 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:29:42,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:29:42,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:29:42,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:29:42,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:29:42,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:29:42,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:29:42,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:29:42,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:29:42,159 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:29:42,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:29:42,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:29:42,160 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:29:42,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:29:42,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:29:42,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:29:42,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:29:42,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:29:42,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:29:42,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:29:42,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:29:42,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-22 23:29:42,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:29:42,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:29:42,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:29:42,368 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:29:42,369 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:29:42,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-22 23:29:42,416 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc3cf263/b46e015760b0424aa7391f60db420fef/FLAG500f1dc55 [2022-07-22 23:29:42,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:29:42,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-22 23:29:43,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc3cf263/b46e015760b0424aa7391f60db420fef/FLAG500f1dc55 [2022-07-22 23:29:43,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efc3cf263/b46e015760b0424aa7391f60db420fef [2022-07-22 23:29:43,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:29:43,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:29:43,394 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:29:43,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:29:43,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:29:43,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:29:43" (1/1) ... [2022-07-22 23:29:43,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bcbb3de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:43, skipping insertion in model container [2022-07-22 23:29:43,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:29:43" (1/1) ... [2022-07-22 23:29:43,402 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:29:43,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:29:44,244 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-22 23:29:44,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:29:44,334 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:29:44,497 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) [2022-07-22 23:29:44,501 INFO L158 Benchmark]: Toolchain (without parser) took 1107.06ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.9MB in the beginning and 72.1MB in the end (delta: -10.1MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-07-22 23:29:44,501 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 23:29:44,502 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1105.46ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.7MB in the beginning and 72.1MB in the end (delta: -10.4MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2022-07-22 23:29:44,503 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 40.4MB in the beginning and 40.3MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1105.46ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 61.7MB in the beginning and 72.1MB in the end (delta: -10.4MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:29:46,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:29:46,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:29:46,188 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:29:46,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:29:46,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:29:46,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:29:46,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:29:46,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:29:46,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:29:46,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:29:46,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:29:46,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:29:46,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:29:46,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:29:46,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:29:46,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:29:46,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:29:46,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:29:46,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:29:46,217 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:29:46,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:29:46,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:29:46,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:29:46,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:29:46,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:29:46,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:29:46,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:29:46,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:29:46,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:29:46,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:29:46,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:29:46,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:29:46,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:29:46,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:29:46,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:29:46,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:29:46,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:29:46,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:29:46,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:29:46,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:29:46,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:29:46,243 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-22 23:29:46,269 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:29:46,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:29:46,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:29:46,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:29:46,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:29:46,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:29:46,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:29:46,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:29:46,272 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:29:46,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:29:46,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:29:46,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:29:46,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:29:46,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:29:46,273 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 23:29:46,274 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 23:29:46,274 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 23:29:46,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:29:46,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:29:46,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:29:46,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:29:46,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:29:46,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:29:46,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:29:46,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:29:46,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:29:46,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:29:46,276 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 23:29:46,276 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 23:29:46,276 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:29:46,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:29:46,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:29:46,277 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 23:29:46,277 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-22 23:29:46,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:29:46,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:29:46,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:29:46,557 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:29:46,557 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:29:46,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-22 23:29:46,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f7e08d9/041b3ab8469f46f3b6750699e5536aaf/FLAGa8bd8f420 [2022-07-22 23:29:47,217 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:29:47,218 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-22 23:29:47,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f7e08d9/041b3ab8469f46f3b6750699e5536aaf/FLAGa8bd8f420 [2022-07-22 23:29:47,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f7e08d9/041b3ab8469f46f3b6750699e5536aaf [2022-07-22 23:29:47,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:29:47,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:29:47,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:29:47,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:29:47,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:29:47,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:29:47" (1/1) ... [2022-07-22 23:29:47,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cce904f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:47, skipping insertion in model container [2022-07-22 23:29:47,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:29:47" (1/1) ... [2022-07-22 23:29:47,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:29:47,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:29:48,354 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-22 23:29:48,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:29:48,469 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-22 23:29:48,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:29:48,632 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-22 23:29:48,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:29:48,661 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:29:48,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2022-07-22 23:29:48,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:29:48,930 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:29:48,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48 WrapperNode [2022-07-22 23:29:48,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:29:48,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:29:48,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:29:48,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:29:48,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:48,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,092 INFO L137 Inliner]: procedures = 206, calls = 979, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2401 [2022-07-22 23:29:49,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:29:49,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:29:49,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:29:49,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:29:49,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:29:49,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:29:49,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:29:49,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:29:49,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (1/1) ... [2022-07-22 23:29:49,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:29:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:29:49,255 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) [2022-07-22 23:29:49,257 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 [2022-07-22 23:29:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-22 23:29:49,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-22 23:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-22 23:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:29:49,304 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-07-22 23:29:49,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-07-22 23:29:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-22 23:29:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-22 23:29:49,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:29:49,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:29:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-07-22 23:29:49,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-07-22 23:29:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-07-22 23:29:49,306 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-07-22 23:29:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:29:49,306 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:29:49,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:29:49,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:29:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-22 23:29:49,307 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-22 23:29:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-07-22 23:29:49,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-07-22 23:29:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:29:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:29:49,307 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-07-22 23:29:49,307 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-22 23:29:49,308 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-22 23:29:49,308 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-07-22 23:29:49,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:29:49,309 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:29:49,309 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-07-22 23:29:49,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-07-22 23:29:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-07-22 23:29:49,310 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-07-22 23:29:49,310 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-22 23:29:49,310 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-22 23:29:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-07-22 23:29:49,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-07-22 23:29:49,311 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-22 23:29:49,312 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-22 23:29:49,312 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-07-22 23:29:49,313 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-07-22 23:29:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-07-22 23:29:49,313 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-07-22 23:29:49,313 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-22 23:29:49,314 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-22 23:29:49,314 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-07-22 23:29:49,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-07-22 23:29:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-22 23:29:49,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-22 23:29:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-07-22 23:29:49,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-07-22 23:29:49,315 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:29:49,315 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:29:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-07-22 23:29:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-07-22 23:29:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:29:49,316 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:29:49,316 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-07-22 23:29:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-07-22 23:29:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-22 23:29:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-22 23:29:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-22 23:29:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-22 23:29:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-07-22 23:29:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-07-22 23:29:49,317 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-07-22 23:29:49,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-07-22 23:29:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:29:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-07-22 23:29:49,318 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-07-22 23:29:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:29:49,318 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-07-22 23:29:49,318 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-07-22 23:29:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-07-22 23:29:49,319 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-07-22 23:29:49,319 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-07-22 23:29:49,319 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-07-22 23:29:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:29:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-07-22 23:29:49,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-07-22 23:29:49,320 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-07-22 23:29:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-07-22 23:29:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-07-22 23:29:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-07-22 23:29:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-07-22 23:29:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-07-22 23:29:49,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:29:49,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:29:49,717 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:29:49,719 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:30:07,215 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:30:07,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:30:07,231 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:30:07,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:30:07 BoogieIcfgContainer [2022-07-22 23:30:07,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:30:07,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:30:07,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:30:07,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:30:07,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:29:47" (1/3) ... [2022-07-22 23:30:07,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaea85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:30:07, skipping insertion in model container [2022-07-22 23:30:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:29:48" (2/3) ... [2022-07-22 23:30:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aaea85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:30:07, skipping insertion in model container [2022-07-22 23:30:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:30:07" (3/3) ... [2022-07-22 23:30:07,243 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-22 23:30:07,253 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:30:07,254 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:30:07,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:30:07,327 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@24d3ec81, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3bdbef9d [2022-07-22 23:30:07,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:30:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2022-07-22 23:30:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-22 23:30:07,344 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:07,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:07,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:07,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2022-07-22 23:30:07,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:07,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117116419] [2022-07-22 23:30:07,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:07,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:07,376 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) [2022-07-22 23:30:07,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 23:30:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:08,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:08,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:08,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:08,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:08,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117116419] [2022-07-22 23:30:08,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117116419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:08,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:08,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:08,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516364964] [2022-07-22 23:30:08,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:08,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:08,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:08,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:08,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:08,667 INFO L87 Difference]: Start difference. First operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:10,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:11,271 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2022-07-22 23:30:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-22 23:30:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:11,291 INFO L225 Difference]: With dead ends: 2070 [2022-07-22 23:30:11,292 INFO L226 Difference]: Without dead ends: 1369 [2022-07-22 23:30:11,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:11,303 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 971 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:11,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:30:11,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-07-22 23:30:11,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-07-22 23:30:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.451552210724365) internal successors, (1543), 1091 states have internal predecessors, (1543), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2022-07-22 23:30:11,425 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2022-07-22 23:30:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:11,426 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2022-07-22 23:30:11,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2022-07-22 23:30:11,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 23:30:11,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:11,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:11,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:11,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:11,648 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:11,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:11,648 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2022-07-22 23:30:11,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:11,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716282114] [2022-07-22 23:30:11,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:11,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:11,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:11,663 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) [2022-07-22 23:30:11,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 23:30:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:12,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:12,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:12,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:12,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716282114] [2022-07-22 23:30:12,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716282114] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:12,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:12,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:12,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933168555] [2022-07-22 23:30:12,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:12,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:12,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:12,702 INFO L87 Difference]: Start difference. First operand 1365 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:12,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:12,899 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2022-07-22 23:30:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:12,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-22 23:30:12,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:12,905 INFO L225 Difference]: With dead ends: 1391 [2022-07-22 23:30:12,905 INFO L226 Difference]: Without dead ends: 1378 [2022-07-22 23:30:12,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:12,907 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:12,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1003 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:30:12,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-22 23:30:12,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2022-07-22 23:30:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.4506114769520226) internal successors, (1542), 1091 states have internal predecessors, (1542), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2022-07-22 23:30:12,941 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2022-07-22 23:30:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:12,941 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2022-07-22 23:30:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:12,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2022-07-22 23:30:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-22 23:30:12,943 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:12,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:12,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:13,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:13,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:13,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2022-07-22 23:30:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:13,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987223919] [2022-07-22 23:30:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:13,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:13,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:13,163 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) [2022-07-22 23:30:13,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 23:30:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:14,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:14,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:14,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:14,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:14,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987223919] [2022-07-22 23:30:14,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987223919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:14,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:14,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:14,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183081786] [2022-07-22 23:30:14,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:14,603 INFO L87 Difference]: Start difference. First operand 1365 states and 1985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:16,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:16,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:16,889 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2022-07-22 23:30:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:16,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-22 23:30:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:16,895 INFO L225 Difference]: With dead ends: 1367 [2022-07-22 23:30:16,896 INFO L226 Difference]: Without dead ends: 1364 [2022-07-22 23:30:16,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:16,902 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:16,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 1005 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 23:30:16,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-22 23:30:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-07-22 23:30:16,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1063 states have (on average 1.4496707431796803) internal successors, (1541), 1090 states have internal predecessors, (1541), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:16,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2022-07-22 23:30:16,945 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2022-07-22 23:30:16,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:16,946 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2022-07-22 23:30:16,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:16,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2022-07-22 23:30:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-22 23:30:16,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:16,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:16,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-22 23:30:17,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:17,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2022-07-22 23:30:17,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:17,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463854646] [2022-07-22 23:30:17,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:17,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:17,171 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) [2022-07-22 23:30:17,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 23:30:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:18,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:18,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:18,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:18,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:18,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:18,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463854646] [2022-07-22 23:30:18,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463854646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:18,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:18,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:18,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000926542] [2022-07-22 23:30:18,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:18,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:18,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:18,834 INFO L87 Difference]: Start difference. First operand 1364 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:20,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:21,054 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2022-07-22 23:30:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:21,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-07-22 23:30:21,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:21,059 INFO L225 Difference]: With dead ends: 1366 [2022-07-22 23:30:21,059 INFO L226 Difference]: Without dead ends: 1363 [2022-07-22 23:30:21,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:21,061 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:21,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 23:30:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-07-22 23:30:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2022-07-22 23:30:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.4487300094073376) internal successors, (1540), 1089 states have internal predecessors, (1540), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2022-07-22 23:30:21,092 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2022-07-22 23:30:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:21,093 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2022-07-22 23:30:21,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2022-07-22 23:30:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-22 23:30:21,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:21,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:21,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-22 23:30:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:21,317 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2022-07-22 23:30:21,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:21,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409075626] [2022-07-22 23:30:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:21,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:21,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:21,320 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) [2022-07-22 23:30:21,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 23:30:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:22,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:22,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:23,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:23,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:23,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:23,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409075626] [2022-07-22 23:30:23,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409075626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:23,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:23,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:23,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542596238] [2022-07-22 23:30:23,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:23,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:23,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:23,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:23,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:23,105 INFO L87 Difference]: Start difference. First operand 1363 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:25,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:25,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:25,287 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2022-07-22 23:30:25,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-22 23:30:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:25,293 INFO L225 Difference]: With dead ends: 1365 [2022-07-22 23:30:25,294 INFO L226 Difference]: Without dead ends: 1362 [2022-07-22 23:30:25,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:25,295 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:25,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 23:30:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-22 23:30:25,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-07-22 23:30:25,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1063 states have (on average 1.4477892756349953) internal successors, (1539), 1088 states have internal predecessors, (1539), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2022-07-22 23:30:25,372 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2022-07-22 23:30:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:25,373 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2022-07-22 23:30:25,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2022-07-22 23:30:25,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 23:30:25,375 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:25,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:25,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-22 23:30:25,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:25,601 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2022-07-22 23:30:25,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:25,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384761669] [2022-07-22 23:30:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:25,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:25,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:25,603 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) [2022-07-22 23:30:25,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-22 23:30:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:26,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:26,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:27,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:27,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:27,458 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:27,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384761669] [2022-07-22 23:30:27,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384761669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:27,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:27,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984284299] [2022-07-22 23:30:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:27,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:27,459 INFO L87 Difference]: Start difference. First operand 1362 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:29,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:29,673 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2022-07-22 23:30:29,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:29,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-22 23:30:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:29,679 INFO L225 Difference]: With dead ends: 1364 [2022-07-22 23:30:29,680 INFO L226 Difference]: Without dead ends: 1361 [2022-07-22 23:30:29,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:29,681 INFO L413 NwaCegarLoop]: 999 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:29,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-22 23:30:29,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-07-22 23:30:29,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-07-22 23:30:29,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1063 states have (on average 1.4468485418626529) internal successors, (1538), 1087 states have internal predecessors, (1538), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2022-07-22 23:30:29,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2022-07-22 23:30:29,717 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2022-07-22 23:30:29,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:29,717 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2022-07-22 23:30:29,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:29,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2022-07-22 23:30:29,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 23:30:29,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:29,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:29,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-22 23:30:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:29,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2022-07-22 23:30:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180899581] [2022-07-22 23:30:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:29,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:29,942 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) [2022-07-22 23:30:29,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-22 23:30:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:31,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:31,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:30:32,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:32,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:32,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180899581] [2022-07-22 23:30:32,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180899581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:32,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:32,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723308009] [2022-07-22 23:30:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:32,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:32,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:32,117 INFO L87 Difference]: Start difference. First operand 1361 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:34,234 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:30:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:34,423 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2022-07-22 23:30:34,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:34,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-07-22 23:30:34,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:34,432 INFO L225 Difference]: With dead ends: 3323 [2022-07-22 23:30:34,432 INFO L226 Difference]: Without dead ends: 1957 [2022-07-22 23:30:34,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:34,437 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:34,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 1473 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-07-22 23:30:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-07-22 23:30:34,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2022-07-22 23:30:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1486 states have (on average 1.3909825033647376) internal successors, (2067), 1518 states have internal predecessors, (2067), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2022-07-22 23:30:34,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2022-07-22 23:30:34,491 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2022-07-22 23:30:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:34,492 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2022-07-22 23:30:34,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 23:30:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2022-07-22 23:30:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-22 23:30:34,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:34,497 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:34,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:34,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:34,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:34,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash -278866688, now seen corresponding path program 1 times [2022-07-22 23:30:34,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:34,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542397196] [2022-07-22 23:30:34,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:34,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:34,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:34,720 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) [2022-07-22 23:30:34,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-22 23:30:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:36,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:30:36,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-22 23:30:37,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:37,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:37,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542397196] [2022-07-22 23:30:37,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542397196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:37,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:37,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:30:37,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665225269] [2022-07-22 23:30:37,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:37,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:30:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:30:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:37,306 INFO L87 Difference]: Start difference. First operand 1951 states and 2731 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-22 23:30:37,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:37,781 INFO L93 Difference]: Finished difference Result 4599 states and 6524 transitions. [2022-07-22 23:30:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:30:37,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 207 [2022-07-22 23:30:37,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:37,792 INFO L225 Difference]: With dead ends: 4599 [2022-07-22 23:30:37,792 INFO L226 Difference]: Without dead ends: 2651 [2022-07-22 23:30:37,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:30:37,799 INFO L413 NwaCegarLoop]: 1034 mSDtfsCounter, 527 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:37,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2005 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:30:37,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-22 23:30:37,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-22 23:30:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2068 states have (on average 1.4361702127659575) internal successors, (2970), 2102 states have internal predecessors, (2970), 410 states have call successors, (410), 173 states have call predecessors, (410), 172 states have return successors, (414), 401 states have call predecessors, (414), 408 states have call successors, (414) [2022-07-22 23:30:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2022-07-22 23:30:37,875 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2022-07-22 23:30:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:37,875 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2022-07-22 23:30:37,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-22 23:30:37,876 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2022-07-22 23:30:37,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 23:30:37,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:37,886 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:37,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:38,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:38,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:38,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1362685847, now seen corresponding path program 1 times [2022-07-22 23:30:38,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:38,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571273328] [2022-07-22 23:30:38,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:38,114 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:38,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:38,116 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) [2022-07-22 23:30:38,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-22 23:30:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:40,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:30:40,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-22 23:30:40,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:40,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:40,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571273328] [2022-07-22 23:30:40,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571273328] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:40,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:40,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:30:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940986020] [2022-07-22 23:30:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:40,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:30:40,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:30:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:30:40,920 INFO L87 Difference]: Start difference. First operand 2651 states and 3794 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:30:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:41,348 INFO L93 Difference]: Finished difference Result 5315 states and 7623 transitions. [2022-07-22 23:30:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:30:41,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 225 [2022-07-22 23:30:41,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:41,361 INFO L225 Difference]: With dead ends: 5315 [2022-07-22 23:30:41,361 INFO L226 Difference]: Without dead ends: 2667 [2022-07-22 23:30:41,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:30:41,371 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 5 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:41,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2957 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:30:41,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-07-22 23:30:41,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2663. [2022-07-22 23:30:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2078 states have (on average 1.4340712223291627) internal successors, (2980), 2114 states have internal predecessors, (2980), 410 states have call successors, (410), 173 states have call predecessors, (410), 174 states have return successors, (416), 401 states have call predecessors, (416), 408 states have call successors, (416) [2022-07-22 23:30:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2022-07-22 23:30:41,526 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 225 [2022-07-22 23:30:41,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:41,527 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2022-07-22 23:30:41,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:30:41,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2022-07-22 23:30:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-22 23:30:41,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:41,534 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:41,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:41,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:41,760 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:41,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:41,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1370684821, now seen corresponding path program 1 times [2022-07-22 23:30:41,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:41,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918382331] [2022-07-22 23:30:41,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:41,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:41,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:41,764 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) [2022-07-22 23:30:41,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-22 23:30:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:44,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 23:30:44,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-22 23:30:46,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:46,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:46,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918382331] [2022-07-22 23:30:46,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918382331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:46,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:46,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:30:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668868547] [2022-07-22 23:30:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:30:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:30:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:30:46,852 INFO L87 Difference]: Start difference. First operand 2663 states and 3806 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:30:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:48,887 INFO L93 Difference]: Finished difference Result 5371 states and 7707 transitions. [2022-07-22 23:30:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:30:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) Word has length 225 [2022-07-22 23:30:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:48,900 INFO L225 Difference]: With dead ends: 5371 [2022-07-22 23:30:48,900 INFO L226 Difference]: Without dead ends: 2711 [2022-07-22 23:30:48,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:30:48,909 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 7 mSDsluCounter, 6888 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7876 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:48,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7876 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:30:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-22 23:30:48,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-22 23:30:48,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2106 states have (on average 1.4283000949667617) internal successors, (3008), 2142 states have internal predecessors, (3008), 410 states have call successors, (410), 173 states have call predecessors, (410), 182 states have return successors, (452), 409 states have call predecessors, (452), 408 states have call successors, (452) [2022-07-22 23:30:48,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3870 transitions. [2022-07-22 23:30:48,997 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3870 transitions. Word has length 225 [2022-07-22 23:30:48,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:48,998 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3870 transitions. [2022-07-22 23:30:48,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 7 states have internal predecessors, (122), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (20), 4 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:30:48,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3870 transitions. [2022-07-22 23:30:49,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-22 23:30:49,006 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:49,006 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:49,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:49,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:49,232 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:49,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:49,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1261399318, now seen corresponding path program 1 times [2022-07-22 23:30:49,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:49,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574240769] [2022-07-22 23:30:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:49,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:49,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:49,235 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) [2022-07-22 23:30:49,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-22 23:30:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:52,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:30:52,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-22 23:30:52,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:52,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:52,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574240769] [2022-07-22 23:30:52,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574240769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:52,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:52,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:30:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522221012] [2022-07-22 23:30:52,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:52,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:30:52,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:52,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:30:52,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:30:52,358 INFO L87 Difference]: Start difference. First operand 2699 states and 3870 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:30:53,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:53,094 INFO L93 Difference]: Finished difference Result 5419 states and 7787 transitions. [2022-07-22 23:30:53,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:30:53,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 228 [2022-07-22 23:30:53,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:53,108 INFO L225 Difference]: With dead ends: 5419 [2022-07-22 23:30:53,109 INFO L226 Difference]: Without dead ends: 2723 [2022-07-22 23:30:53,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:30:53,117 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:53,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:30:53,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-07-22 23:30:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2022-07-22 23:30:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2116 states have (on average 1.4262759924385633) internal successors, (3018), 2152 states have internal predecessors, (3018), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 411 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-22 23:30:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3884 transitions. [2022-07-22 23:30:53,202 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3884 transitions. Word has length 228 [2022-07-22 23:30:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3884 transitions. [2022-07-22 23:30:53,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:30:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3884 transitions. [2022-07-22 23:30:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-22 23:30:53,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:53,212 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:53,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-22 23:30:53,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:53,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:53,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:53,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1945602355, now seen corresponding path program 1 times [2022-07-22 23:30:53,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226274164] [2022-07-22 23:30:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:30:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:53,443 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) [2022-07-22 23:30:53,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-22 23:30:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:30:56,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 23:30:56,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:30:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-22 23:30:57,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:30:57,466 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:30:57,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226274164] [2022-07-22 23:30:57,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226274164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:30:57,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:30:57,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:30:57,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953072649] [2022-07-22 23:30:57,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:30:57,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:30:57,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:30:57,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:30:57,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:30:57,468 INFO L87 Difference]: Start difference. First operand 2711 states and 3884 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:30:59,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:30:59,056 INFO L93 Difference]: Finished difference Result 5459 states and 7831 transitions. [2022-07-22 23:30:59,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:30:59,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 238 [2022-07-22 23:30:59,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:30:59,067 INFO L225 Difference]: With dead ends: 5459 [2022-07-22 23:30:59,067 INFO L226 Difference]: Without dead ends: 2751 [2022-07-22 23:30:59,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:30:59,075 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 5 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4936 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:30:59,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4936 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:30:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-07-22 23:30:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2723. [2022-07-22 23:30:59,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2723 states, 2128 states have (on average 1.4238721804511278) internal successors, (3030), 2160 states have internal predecessors, (3030), 412 states have call successors, (412), 173 states have call predecessors, (412), 182 states have return successors, (454), 415 states have call predecessors, (454), 410 states have call successors, (454) [2022-07-22 23:30:59,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3896 transitions. [2022-07-22 23:30:59,139 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3896 transitions. Word has length 238 [2022-07-22 23:30:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:30:59,140 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3896 transitions. [2022-07-22 23:30:59,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-22 23:30:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3896 transitions. [2022-07-22 23:30:59,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-22 23:30:59,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:30:59,147 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:30:59,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-22 23:30:59,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:30:59,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:30:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:30:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash 332974640, now seen corresponding path program 2 times [2022-07-22 23:30:59,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:30:59,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886357344] [2022-07-22 23:30:59,366 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:30:59,366 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:30:59,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:30:59,367 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) [2022-07-22 23:30:59,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-22 23:31:01,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:31:01,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:31:01,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:31:01,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-22 23:31:01,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:01,638 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:01,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886357344] [2022-07-22 23:31:01,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886357344] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:01,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:01,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:31:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593047176] [2022-07-22 23:31:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:01,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:31:01,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:31:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:31:01,639 INFO L87 Difference]: Start difference. First operand 2723 states and 3896 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:31:03,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:31:04,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:04,140 INFO L93 Difference]: Finished difference Result 3548 states and 4926 transitions. [2022-07-22 23:31:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:31:04,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 241 [2022-07-22 23:31:04,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:04,150 INFO L225 Difference]: With dead ends: 3548 [2022-07-22 23:31:04,150 INFO L226 Difference]: Without dead ends: 2711 [2022-07-22 23:31:04,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:31:04,153 INFO L413 NwaCegarLoop]: 1358 mSDtfsCounter, 403 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:04,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:31:04,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-22 23:31:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-22 23:31:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-22 23:31:04,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-22 23:31:04,216 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 241 [2022-07-22 23:31:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:04,216 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-22 23:31:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (24), 3 states have call predecessors, (24), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:31:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-22 23:31:04,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-22 23:31:04,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:04,227 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:04,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:04,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:04,448 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:04,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2084236656, now seen corresponding path program 1 times [2022-07-22 23:31:04,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798260069] [2022-07-22 23:31:04,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:04,451 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:04,452 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) [2022-07-22 23:31:04,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-22 23:31:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:08,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:31:08,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-07-22 23:31:09,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:09,345 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:09,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798260069] [2022-07-22 23:31:09,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1798260069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:09,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:09,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:31:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041003530] [2022-07-22 23:31:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:09,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:31:09,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:31:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:09,346 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:31:11,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:11,014 INFO L93 Difference]: Finished difference Result 5443 states and 7785 transitions. [2022-07-22 23:31:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:31:11,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 440 [2022-07-22 23:31:11,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:11,023 INFO L225 Difference]: With dead ends: 5443 [2022-07-22 23:31:11,024 INFO L226 Difference]: Without dead ends: 2747 [2022-07-22 23:31:11,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:31:11,030 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 20 mSDsluCounter, 2935 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3927 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:11,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3927 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 23:31:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-07-22 23:31:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2022-07-22 23:31:11,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2112 states have (on average 1.4247159090909092) internal successors, (3009), 2142 states have internal predecessors, (3009), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-22 23:31:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-22 23:31:11,107 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 440 [2022-07-22 23:31:11,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:11,107 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-22 23:31:11,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:31:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-22 23:31:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-22 23:31:11,116 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:11,116 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:11,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:11,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:11,332 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 735862630, now seen corresponding path program 1 times [2022-07-22 23:31:11,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:11,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447287311] [2022-07-22 23:31:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:11,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:11,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:11,337 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) [2022-07-22 23:31:11,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-22 23:31:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:16,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:31:16,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:16,405 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-22 23:31:16,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:16,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:16,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447287311] [2022-07-22 23:31:16,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447287311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:16,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:16,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:31:16,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949015529] [2022-07-22 23:31:16,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:16,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:31:16,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:16,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:31:16,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:31:16,408 INFO L87 Difference]: Start difference. First operand 2699 states and 3859 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 23:31:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:17,029 INFO L93 Difference]: Finished difference Result 5423 states and 7765 transitions. [2022-07-22 23:31:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:31:17,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 440 [2022-07-22 23:31:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:17,053 INFO L225 Difference]: With dead ends: 5423 [2022-07-22 23:31:17,053 INFO L226 Difference]: Without dead ends: 2727 [2022-07-22 23:31:17,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:17,060 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 7 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2953 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:17,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:31:17,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-07-22 23:31:17,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2707. [2022-07-22 23:31:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2707 states, 2120 states have (on average 1.4231132075471697) internal successors, (3017), 2150 states have internal predecessors, (3017), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 410 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-22 23:31:17,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3867 transitions. [2022-07-22 23:31:17,144 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3867 transitions. Word has length 440 [2022-07-22 23:31:17,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:17,145 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 3867 transitions. [2022-07-22 23:31:17,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-22 23:31:17,145 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3867 transitions. [2022-07-22 23:31:17,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-22 23:31:17,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:17,155 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:17,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:17,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:17,375 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:17,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1782441170, now seen corresponding path program 1 times [2022-07-22 23:31:17,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:17,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262730694] [2022-07-22 23:31:17,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:17,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:17,384 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) [2022-07-22 23:31:17,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-22 23:31:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:22,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 5022 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 23:31:22,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-22 23:31:23,429 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:23,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:23,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262730694] [2022-07-22 23:31:23,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262730694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:23,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:23,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:31:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614171903] [2022-07-22 23:31:23,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:31:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:31:23,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:31:23,433 INFO L87 Difference]: Start difference. First operand 2707 states and 3867 transitions. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:31:24,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:24,221 INFO L93 Difference]: Finished difference Result 5459 states and 7801 transitions. [2022-07-22 23:31:24,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:31:24,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 486 [2022-07-22 23:31:24,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:24,229 INFO L225 Difference]: With dead ends: 5459 [2022-07-22 23:31:24,229 INFO L226 Difference]: Without dead ends: 2755 [2022-07-22 23:31:24,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:31:24,236 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 6 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:24,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4939 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 23:31:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-22 23:31:24,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2719. [2022-07-22 23:31:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2132 states have (on average 1.420731707317073) internal successors, (3029), 2158 states have internal predecessors, (3029), 408 states have call successors, (408), 172 states have call predecessors, (408), 178 states have return successors, (442), 414 states have call predecessors, (442), 406 states have call successors, (442) [2022-07-22 23:31:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3879 transitions. [2022-07-22 23:31:24,298 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3879 transitions. Word has length 486 [2022-07-22 23:31:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:24,298 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3879 transitions. [2022-07-22 23:31:24,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 5 states have internal predecessors, (170), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:31:24,298 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3879 transitions. [2022-07-22 23:31:24,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-22 23:31:24,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:24,306 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:24,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:24,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:24,525 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:24,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:24,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1213120962, now seen corresponding path program 2 times [2022-07-22 23:31:24,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:24,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414551883] [2022-07-22 23:31:24,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:31:24,528 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:24,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:24,529 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) [2022-07-22 23:31:24,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-22 23:31:30,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:31:30,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:31:30,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 23:31:30,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-22 23:31:32,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:32,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:32,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414551883] [2022-07-22 23:31:32,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414551883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:32,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:32,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:31:32,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753975416] [2022-07-22 23:31:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:32,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:31:32,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:31:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:31:32,388 INFO L87 Difference]: Start difference. First operand 2719 states and 3879 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-22 23:31:33,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:33,090 INFO L93 Difference]: Finished difference Result 5491 states and 7837 transitions. [2022-07-22 23:31:33,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:31:33,091 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) Word has length 492 [2022-07-22 23:31:33,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:33,099 INFO L225 Difference]: With dead ends: 5491 [2022-07-22 23:31:33,099 INFO L226 Difference]: Without dead ends: 2775 [2022-07-22 23:31:33,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:31:33,105 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:33,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:31:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-07-22 23:31:33,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2739. [2022-07-22 23:31:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2148 states have (on average 1.4175977653631284) internal successors, (3045), 2170 states have internal predecessors, (3045), 408 states have call successors, (408), 172 states have call predecessors, (408), 182 states have return successors, (450), 422 states have call predecessors, (450), 406 states have call successors, (450) [2022-07-22 23:31:33,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3903 transitions. [2022-07-22 23:31:33,174 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3903 transitions. Word has length 492 [2022-07-22 23:31:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:33,175 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3903 transitions. [2022-07-22 23:31:33,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (38), 2 states have call predecessors, (38), 4 states have return successors, (32), 4 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-22 23:31:33,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3903 transitions. [2022-07-22 23:31:33,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-22 23:31:33,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:33,184 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:33,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:33,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:33,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:33,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:33,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1711081881, now seen corresponding path program 3 times [2022-07-22 23:31:33,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:33,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096093734] [2022-07-22 23:31:33,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:31:33,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:33,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:33,428 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:31:33,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-22 23:31:37,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 23:31:37,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:31:37,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:31:37,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:38,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-07-22 23:31:38,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:38,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:38,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096093734] [2022-07-22 23:31:38,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096093734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:38,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:38,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:31:38,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634558689] [2022-07-22 23:31:38,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:38,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:31:38,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:38,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:31:38,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:38,437 INFO L87 Difference]: Start difference. First operand 2739 states and 3903 transitions. Second operand has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:31:39,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:39,073 INFO L93 Difference]: Finished difference Result 5503 states and 7899 transitions. [2022-07-22 23:31:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:31:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 501 [2022-07-22 23:31:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:39,082 INFO L225 Difference]: With dead ends: 5503 [2022-07-22 23:31:39,083 INFO L226 Difference]: Without dead ends: 2767 [2022-07-22 23:31:39,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 497 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:39,090 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:39,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:31:39,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-07-22 23:31:39,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2755. [2022-07-22 23:31:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2755 states, 2160 states have (on average 1.4152777777777779) internal successors, (3057), 2182 states have internal predecessors, (3057), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 426 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-22 23:31:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3961 transitions. [2022-07-22 23:31:39,173 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3961 transitions. Word has length 501 [2022-07-22 23:31:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:39,175 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3961 transitions. [2022-07-22 23:31:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.4) internal successors, (147), 4 states have internal predecessors, (147), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-22 23:31:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3961 transitions. [2022-07-22 23:31:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2022-07-22 23:31:39,184 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:39,184 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:39,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:39,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:39,401 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:39,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:39,401 INFO L85 PathProgramCache]: Analyzing trace with hash -472021669, now seen corresponding path program 1 times [2022-07-22 23:31:39,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:39,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89716996] [2022-07-22 23:31:39,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:39,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:39,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:39,424 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:31:39,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-22 23:31:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:45,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 5815 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-22 23:31:45,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 381 proven. 0 refuted. 0 times theorem prover too weak. 959 trivial. 0 not checked. [2022-07-22 23:31:47,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:47,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:47,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89716996] [2022-07-22 23:31:47,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89716996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:47,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:47,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:31:47,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28665149] [2022-07-22 23:31:47,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:47,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:31:47,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:47,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:31:47,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:31:47,265 INFO L87 Difference]: Start difference. First operand 2755 states and 3961 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:31:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:47,973 INFO L93 Difference]: Finished difference Result 5551 states and 7985 transitions. [2022-07-22 23:31:47,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:31:47,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 553 [2022-07-22 23:31:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:47,984 INFO L225 Difference]: With dead ends: 5551 [2022-07-22 23:31:47,984 INFO L226 Difference]: Without dead ends: 2799 [2022-07-22 23:31:47,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:31:47,993 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 6 mSDsluCounter, 4962 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:47,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5960 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:31:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-22 23:31:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2763. [2022-07-22 23:31:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2168 states have (on average 1.4137453874538746) internal successors, (3065), 2186 states have internal predecessors, (3065), 408 states have call successors, (408), 172 states have call predecessors, (408), 186 states have return successors, (496), 430 states have call predecessors, (496), 406 states have call successors, (496) [2022-07-22 23:31:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3969 transitions. [2022-07-22 23:31:48,074 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3969 transitions. Word has length 553 [2022-07-22 23:31:48,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:48,074 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3969 transitions. [2022-07-22 23:31:48,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:31:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3969 transitions. [2022-07-22 23:31:48,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2022-07-22 23:31:48,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:48,083 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:48,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:48,308 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1179334290, now seen corresponding path program 2 times [2022-07-22 23:31:48,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:48,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192873409] [2022-07-22 23:31:48,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:31:48,311 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:48,313 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:31:48,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-22 23:31:50,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:31:50,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:31:50,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:31:50,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:31:51,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1321 trivial. 0 not checked. [2022-07-22 23:31:51,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:31:51,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:31:51,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192873409] [2022-07-22 23:31:51,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192873409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:31:51,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:31:51,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:31:51,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894762334] [2022-07-22 23:31:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:31:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:31:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:31:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:31:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:51,103 INFO L87 Difference]: Start difference. First operand 2763 states and 3969 transitions. Second operand has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:31:51,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:31:51,472 INFO L93 Difference]: Finished difference Result 5559 states and 8159 transitions. [2022-07-22 23:31:51,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:31:51,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 562 [2022-07-22 23:31:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:31:51,504 INFO L225 Difference]: With dead ends: 5559 [2022-07-22 23:31:51,504 INFO L226 Difference]: Without dead ends: 2799 [2022-07-22 23:31:51,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:31:51,528 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:31:51,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:31:51,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-22 23:31:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2787. [2022-07-22 23:31:51,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2186 states have (on average 1.4103385178408052) internal successors, (3083), 2204 states have internal predecessors, (3083), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 436 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:31:51,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4005 transitions. [2022-07-22 23:31:51,633 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4005 transitions. Word has length 562 [2022-07-22 23:31:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:31:51,635 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4005 transitions. [2022-07-22 23:31:51,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:31:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4005 transitions. [2022-07-22 23:31:51,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-07-22 23:31:51,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:31:51,645 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:31:51,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-22 23:31:51,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:31:51,860 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:31:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:31:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash 303568379, now seen corresponding path program 1 times [2022-07-22 23:31:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:31:51,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625268026] [2022-07-22 23:31:51,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:31:51,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:31:51,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:31:51,870 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:31:51,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-22 23:31:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:31:58,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 5883 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 23:31:58,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-07-22 23:32:01,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:01,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:01,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625268026] [2022-07-22 23:32:01,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625268026] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:01,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:32:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265515530] [2022-07-22 23:32:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:01,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:32:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:32:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:32:01,880 INFO L87 Difference]: Start difference. First operand 2787 states and 4005 transitions. Second operand has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 23:32:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:05,848 INFO L93 Difference]: Finished difference Result 5819 states and 8399 transitions. [2022-07-22 23:32:05,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:32:05,864 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 565 [2022-07-22 23:32:05,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:05,874 INFO L225 Difference]: With dead ends: 5819 [2022-07-22 23:32:05,874 INFO L226 Difference]: Without dead ends: 3035 [2022-07-22 23:32:05,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:32:05,880 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 116 mSDsluCounter, 9418 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 10482 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:05,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 10482 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-22 23:32:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-22 23:32:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2799. [2022-07-22 23:32:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2198 states have (on average 1.408098271155596) internal successors, (3095), 2212 states have internal predecessors, (3095), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4017 transitions. [2022-07-22 23:32:05,961 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4017 transitions. Word has length 565 [2022-07-22 23:32:05,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:05,961 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4017 transitions. [2022-07-22 23:32:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.363636363636363) internal successors, (202), 9 states have internal predecessors, (202), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 23:32:05,962 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4017 transitions. [2022-07-22 23:32:05,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-22 23:32:05,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:05,968 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:06,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:06,192 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash 776342615, now seen corresponding path program 2 times [2022-07-22 23:32:06,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:06,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253746130] [2022-07-22 23:32:06,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:32:06,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:06,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:06,224 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:06,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-22 23:32:08,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 23:32:08,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:32:08,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:32:08,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2022-07-22 23:32:08,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:08,902 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:08,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253746130] [2022-07-22 23:32:08,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253746130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:08,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:08,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:32:08,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165179195] [2022-07-22 23:32:08,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:08,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:32:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:32:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:08,904 INFO L87 Difference]: Start difference. First operand 2799 states and 4017 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:32:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:09,078 INFO L93 Difference]: Finished difference Result 5599 states and 8051 transitions. [2022-07-22 23:32:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:32:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 559 [2022-07-22 23:32:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:09,086 INFO L225 Difference]: With dead ends: 5599 [2022-07-22 23:32:09,086 INFO L226 Difference]: Without dead ends: 2803 [2022-07-22 23:32:09,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:09,092 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:09,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1970 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:32:09,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-07-22 23:32:09,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2022-07-22 23:32:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2202 states have (on average 1.4073569482288828) internal successors, (3099), 2216 states have internal predecessors, (3099), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4021 transitions. [2022-07-22 23:32:09,160 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4021 transitions. Word has length 559 [2022-07-22 23:32:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:09,161 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4021 transitions. [2022-07-22 23:32:09,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (35), 2 states have call predecessors, (35), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:32:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4021 transitions. [2022-07-22 23:32:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-07-22 23:32:09,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:09,168 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:09,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:09,392 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:09,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash 330953787, now seen corresponding path program 1 times [2022-07-22 23:32:09,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:09,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553119684] [2022-07-22 23:32:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:09,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:09,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:09,396 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:09,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-22 23:32:15,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 5871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:32:15,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2022-07-22 23:32:16,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:16,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:16,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553119684] [2022-07-22 23:32:16,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553119684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:16,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:16,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 23:32:16,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731643629] [2022-07-22 23:32:16,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:16,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:32:16,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:16,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:32:16,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 23:32:16,242 INFO L87 Difference]: Start difference. First operand 2803 states and 4021 transitions. Second operand has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:16,824 INFO L93 Difference]: Finished difference Result 5635 states and 8097 transitions. [2022-07-22 23:32:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:32:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 561 [2022-07-22 23:32:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:16,835 INFO L225 Difference]: With dead ends: 5635 [2022-07-22 23:32:16,836 INFO L226 Difference]: Without dead ends: 2835 [2022-07-22 23:32:16,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:16,842 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:16,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2956 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 23:32:16,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-07-22 23:32:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2811. [2022-07-22 23:32:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4058823529411764) internal successors, (3107), 2224 states have internal predecessors, (3107), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-07-22 23:32:16,915 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 561 [2022-07-22 23:32:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:16,916 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-07-22 23:32:16,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.25) internal successors, (197), 4 states have internal predecessors, (197), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-07-22 23:32:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-07-22 23:32:16,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:16,923 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:17,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:17,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:17,141 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:17,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1650606693, now seen corresponding path program 1 times [2022-07-22 23:32:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046442919] [2022-07-22 23:32:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:17,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:17,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:17,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:17,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-22 23:32:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:24,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 5965 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 23:32:24,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:26,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-22 23:32:26,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:26,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:26,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046442919] [2022-07-22 23:32:26,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046442919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:26,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:26,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:32:26,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701911697] [2022-07-22 23:32:26,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:32:26,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:26,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:32:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:32:26,978 INFO L87 Difference]: Start difference. First operand 2811 states and 4029 transitions. Second operand has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 23:32:29,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:29,372 INFO L93 Difference]: Finished difference Result 5647 states and 8105 transitions. [2022-07-22 23:32:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 23:32:29,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) Word has length 569 [2022-07-22 23:32:29,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:29,380 INFO L225 Difference]: With dead ends: 5647 [2022-07-22 23:32:29,380 INFO L226 Difference]: Without dead ends: 2839 [2022-07-22 23:32:29,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:32:29,386 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 16 mSDsluCounter, 7889 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8879 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:29,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8879 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 23:32:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-07-22 23:32:29,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2811. [2022-07-22 23:32:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:29,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-22 23:32:29,455 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 569 [2022-07-22 23:32:29,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:29,455 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-22 23:32:29,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.4) internal successors, (204), 8 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (39), 4 states have call predecessors, (39), 2 states have call successors, (39) [2022-07-22 23:32:29,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-22 23:32:29,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-22 23:32:29,462 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:29,463 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:29,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:29,676 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:29,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:29,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1290265901, now seen corresponding path program 2 times [2022-07-22 23:32:29,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:29,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406455584] [2022-07-22 23:32:29,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:32:29,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:29,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:29,680 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:29,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-22 23:32:39,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:32:39,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:32:40,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:32:40,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-22 23:32:40,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:40,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406455584] [2022-07-22 23:32:40,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406455584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:40,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:40,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:32:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916149248] [2022-07-22 23:32:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:40,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:32:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:32:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:32:40,766 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:42,051 INFO L93 Difference]: Finished difference Result 5683 states and 8149 transitions. [2022-07-22 23:32:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:32:42,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-22 23:32:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:42,061 INFO L225 Difference]: With dead ends: 5683 [2022-07-22 23:32:42,062 INFO L226 Difference]: Without dead ends: 2875 [2022-07-22 23:32:42,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:32:42,066 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 16 mSDsluCounter, 2951 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3952 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:42,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3952 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 23:32:42,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-07-22 23:32:42,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2811. [2022-07-22 23:32:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2210 states have (on average 1.4040723981900451) internal successors, (3103), 2224 states have internal predecessors, (3103), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:42,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-22 23:32:42,138 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 575 [2022-07-22 23:32:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:42,139 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-22 23:32:42,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.8) internal successors, (204), 5 states have internal predecessors, (204), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:42,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-22 23:32:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-22 23:32:42,146 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:42,146 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:42,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:42,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:42,372 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1466773769, now seen corresponding path program 1 times [2022-07-22 23:32:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:42,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038387265] [2022-07-22 23:32:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:42,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:42,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:42,376 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:42,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-22 23:32:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:49,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 6021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:32:49,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-22 23:32:49,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:32:49,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038387265] [2022-07-22 23:32:49,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2038387265] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:32:49,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:32:49,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 23:32:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170515968] [2022-07-22 23:32:49,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:32:49,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:32:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:49,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:32:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:49,849 INFO L87 Difference]: Start difference. First operand 2811 states and 4025 transitions. Second operand has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:32:50,252 INFO L93 Difference]: Finished difference Result 5747 states and 8261 transitions. [2022-07-22 23:32:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:32:50,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 575 [2022-07-22 23:32:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:32:50,277 INFO L225 Difference]: With dead ends: 5747 [2022-07-22 23:32:50,277 INFO L226 Difference]: Without dead ends: 2939 [2022-07-22 23:32:50,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 23:32:50,284 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 27 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:32:50,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1963 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:32:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-22 23:32:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2819. [2022-07-22 23:32:50,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2819 states, 2218 states have (on average 1.402614968440036) internal successors, (3111), 2232 states have internal predecessors, (3111), 408 states have call successors, (408), 172 states have call predecessors, (408), 192 states have return successors, (514), 440 states have call predecessors, (514), 406 states have call successors, (514) [2022-07-22 23:32:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4033 transitions. [2022-07-22 23:32:50,367 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4033 transitions. Word has length 575 [2022-07-22 23:32:50,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:32:50,369 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4033 transitions. [2022-07-22 23:32:50,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.33333333333333) internal successors, (205), 3 states have internal predecessors, (205), 2 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-07-22 23:32:50,369 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4033 transitions. [2022-07-22 23:32:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-22 23:32:50,376 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:32:50,376 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:32:50,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-22 23:32:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:32:50,600 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:32:50,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:32:50,600 INFO L85 PathProgramCache]: Analyzing trace with hash -408299781, now seen corresponding path program 1 times [2022-07-22 23:32:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:32:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686432720] [2022-07-22 23:32:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:32:50,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:32:50,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:32:50,614 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:32:50,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-22 23:32:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:32:57,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 6071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:32:57,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:32:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 481 proven. 1 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-22 23:32:58,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:32:59,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-22 23:32:59,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:32:59,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686432720] [2022-07-22 23:32:59,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [686432720] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:32:59,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:32:59,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:32:59,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433171793] [2022-07-22 23:32:59,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:32:59,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:32:59,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:32:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:32:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:32:59,027 INFO L87 Difference]: Start difference. First operand 2819 states and 4033 transitions. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-22 23:33:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:00,721 INFO L93 Difference]: Finished difference Result 5891 states and 8481 transitions. [2022-07-22 23:33:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:00,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) Word has length 593 [2022-07-22 23:33:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:00,730 INFO L225 Difference]: With dead ends: 5891 [2022-07-22 23:33:00,731 INFO L226 Difference]: Without dead ends: 3075 [2022-07-22 23:33:00,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1184 GetRequests, 1180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:33:00,736 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 104 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:00,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 3948 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-22 23:33:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-07-22 23:33:00,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2022-07-22 23:33:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2402 states have (on average 1.3917568692756037) internal successors, (3343), 2416 states have internal predecessors, (3343), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 512 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-22 23:33:00,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4425 transitions. [2022-07-22 23:33:00,824 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4425 transitions. Word has length 593 [2022-07-22 23:33:00,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:00,824 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 4425 transitions. [2022-07-22 23:33:00,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 4 states have call successors, (73), 2 states have call predecessors, (73), 2 states have return successors, (67), 4 states have call predecessors, (67), 4 states have call successors, (67) [2022-07-22 23:33:00,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4425 transitions. [2022-07-22 23:33:00,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-22 23:33:00,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:00,831 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:00,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-22 23:33:01,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:33:01,048 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:01,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:01,048 INFO L85 PathProgramCache]: Analyzing trace with hash 214102459, now seen corresponding path program 2 times [2022-07-22 23:33:01,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:33:01,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104267198] [2022-07-22 23:33:01,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:33:01,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:33:01,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:33:01,052 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:33:01,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-22 23:33:12,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:33:12,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:33:12,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 6171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:33:13,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:33:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2022-07-22 23:33:13,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:33:13,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:33:13,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104267198] [2022-07-22 23:33:13,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104267198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:13,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:13,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:13,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919573332] [2022-07-22 23:33:13,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:13,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:13,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:33:13,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:13,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:13,536 INFO L87 Difference]: Start difference. First operand 3075 states and 4425 transitions. Second operand has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-22 23:33:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:14,175 INFO L93 Difference]: Finished difference Result 6167 states and 8893 transitions. [2022-07-22 23:33:14,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:14,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 629 [2022-07-22 23:33:14,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:14,184 INFO L225 Difference]: With dead ends: 6167 [2022-07-22 23:33:14,184 INFO L226 Difference]: Without dead ends: 3095 [2022-07-22 23:33:14,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:14,191 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3917 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:14,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3917 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:33:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-07-22 23:33:14,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3083. [2022-07-22 23:33:14,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2410 states have (on average 1.3904564315352697) internal successors, (3351), 2420 states have internal predecessors, (3351), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 516 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-22 23:33:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4433 transitions. [2022-07-22 23:33:14,273 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4433 transitions. Word has length 629 [2022-07-22 23:33:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:14,273 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4433 transitions. [2022-07-22 23:33:14,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.8) internal successors, (249), 4 states have internal predecessors, (249), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-22 23:33:14,273 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4433 transitions. [2022-07-22 23:33:14,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-22 23:33:14,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:14,282 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:14,508 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forcibly destroying the process [2022-07-22 23:33:14,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-22 23:33:14,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:33:14,557 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:14,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:14,558 INFO L85 PathProgramCache]: Analyzing trace with hash 586231223, now seen corresponding path program 3 times [2022-07-22 23:33:14,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:33:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711162849] [2022-07-22 23:33:14,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:33:14,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:33:14,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:33:14,572 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:33:14,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-22 23:33:21,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 23:33:21,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:33:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:33:21,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:33:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2022-07-22 23:33:22,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:33:22,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:33:22,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711162849] [2022-07-22 23:33:22,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711162849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:22,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:22,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094321719] [2022-07-22 23:33:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:22,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:22,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:33:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:22,179 INFO L87 Difference]: Start difference. First operand 3083 states and 4433 transitions. Second operand has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:33:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:22,517 INFO L93 Difference]: Finished difference Result 6187 states and 9133 transitions. [2022-07-22 23:33:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) Word has length 687 [2022-07-22 23:33:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:22,528 INFO L225 Difference]: With dead ends: 6187 [2022-07-22 23:33:22,529 INFO L226 Difference]: Without dead ends: 3107 [2022-07-22 23:33:22,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:22,548 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:22,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4000 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:33:22,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-07-22 23:33:22,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3095. [2022-07-22 23:33:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3095 states, 2422 states have (on average 1.388521882741536) internal successors, (3363), 2426 states have internal predecessors, (3363), 480 states have call successors, (480), 172 states have call predecessors, (480), 192 states have return successors, (602), 522 states have call predecessors, (602), 478 states have call successors, (602) [2022-07-22 23:33:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4445 transitions. [2022-07-22 23:33:22,695 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4445 transitions. Word has length 687 [2022-07-22 23:33:22,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:22,696 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4445 transitions. [2022-07-22 23:33:22,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (33), 3 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-22 23:33:22,696 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4445 transitions. [2022-07-22 23:33:22,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-22 23:33:22,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:22,704 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:22,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-22 23:33:22,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:33:22,920 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:22,920 INFO L85 PathProgramCache]: Analyzing trace with hash 327773175, now seen corresponding path program 1 times [2022-07-22 23:33:22,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:33:22,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241459331] [2022-07-22 23:33:22,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:33:22,923 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:33:22,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:33:22,924 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:33:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-07-22 23:33:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:32,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:33:33,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:33:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 838 proven. 0 refuted. 0 times theorem prover too weak. 1049 trivial. 0 not checked. [2022-07-22 23:33:33,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:33:33,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:33:33,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241459331] [2022-07-22 23:33:33,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241459331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:33,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:33,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885298491] [2022-07-22 23:33:33,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:33,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:33:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:33,446 INFO L87 Difference]: Start difference. First operand 3095 states and 4445 transitions. Second operand has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-07-22 23:33:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:33,759 INFO L93 Difference]: Finished difference Result 6223 states and 9181 transitions. [2022-07-22 23:33:33,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:33,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) Word has length 687 [2022-07-22 23:33:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:33,767 INFO L225 Difference]: With dead ends: 6223 [2022-07-22 23:33:33,767 INFO L226 Difference]: Without dead ends: 3131 [2022-07-22 23:33:33,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:33,775 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 2 mSDsluCounter, 2981 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3977 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:33,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3977 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:33:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-07-22 23:33:33,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3119. [2022-07-22 23:33:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2440 states have (on average 1.3856557377049181) internal successors, (3381), 2444 states have internal predecessors, (3381), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 528 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-22 23:33:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4481 transitions. [2022-07-22 23:33:33,852 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4481 transitions. Word has length 687 [2022-07-22 23:33:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:33,852 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4481 transitions. [2022-07-22 23:33:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.6) internal successors, (248), 4 states have internal predecessors, (248), 2 states have call successors, (55), 2 states have call predecessors, (55), 3 states have return successors, (49), 3 states have call predecessors, (49), 2 states have call successors, (49) [2022-07-22 23:33:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4481 transitions. [2022-07-22 23:33:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-22 23:33:33,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:33,861 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:34,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-07-22 23:33:34,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:33:34,076 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash -341775785, now seen corresponding path program 1 times [2022-07-22 23:33:34,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:33:34,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041069507] [2022-07-22 23:33:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:33:34,079 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:33:34,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:33:34,080 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:33:34,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-07-22 23:33:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:33:43,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:33:43,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:33:43,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 764 proven. 0 refuted. 0 times theorem prover too weak. 1123 trivial. 0 not checked. [2022-07-22 23:33:43,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:33:43,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:33:43,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041069507] [2022-07-22 23:33:43,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041069507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:43,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:43,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189266175] [2022-07-22 23:33:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:33:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:43,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:43,643 INFO L87 Difference]: Start difference. First operand 3119 states and 4481 transitions. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-22 23:33:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:33:43,993 INFO L93 Difference]: Finished difference Result 6247 states and 9157 transitions. [2022-07-22 23:33:43,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:33:43,994 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) Word has length 687 [2022-07-22 23:33:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:33:44,004 INFO L225 Difference]: With dead ends: 6247 [2022-07-22 23:33:44,004 INFO L226 Difference]: Without dead ends: 3131 [2022-07-22 23:33:44,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:44,011 INFO L413 NwaCegarLoop]: 1007 mSDtfsCounter, 13 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4002 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:33:44,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4002 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 23:33:44,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-07-22 23:33:44,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3119. [2022-07-22 23:33:44,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3119 states, 2440 states have (on average 1.3831967213114753) internal successors, (3375), 2444 states have internal predecessors, (3375), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 528 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-22 23:33:44,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4475 transitions. [2022-07-22 23:33:44,095 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4475 transitions. Word has length 687 [2022-07-22 23:33:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:33:44,096 INFO L495 AbstractCegarLoop]: Abstraction has 3119 states and 4475 transitions. [2022-07-22 23:33:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 4 states have internal predecessors, (241), 2 states have call successors, (53), 2 states have call predecessors, (53), 3 states have return successors, (48), 3 states have call predecessors, (48), 2 states have call successors, (48) [2022-07-22 23:33:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4475 transitions. [2022-07-22 23:33:44,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-22 23:33:44,104 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:33:44,105 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:33:44,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-07-22 23:33:44,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:33:44,332 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:33:44,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:33:44,332 INFO L85 PathProgramCache]: Analyzing trace with hash 576530999, now seen corresponding path program 2 times [2022-07-22 23:33:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:33:44,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115489851] [2022-07-22 23:33:44,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 23:33:44,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:33:44,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:33:44,337 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:33:44,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-07-22 23:33:58,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 23:33:58,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:33:59,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 6913 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:33:59,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:33:59,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 1025 proven. 0 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2022-07-22 23:33:59,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:33:59,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:33:59,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115489851] [2022-07-22 23:33:59,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115489851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:33:59,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:33:59,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:33:59,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862719346] [2022-07-22 23:33:59,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:33:59,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:33:59,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:33:59,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:33:59,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:33:59,538 INFO L87 Difference]: Start difference. First operand 3119 states and 4475 transitions. Second operand has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-07-22 23:34:00,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:00,184 INFO L93 Difference]: Finished difference Result 6255 states and 8993 transitions. [2022-07-22 23:34:00,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:34:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) Word has length 687 [2022-07-22 23:34:00,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:00,193 INFO L225 Difference]: With dead ends: 6255 [2022-07-22 23:34:00,193 INFO L226 Difference]: Without dead ends: 3139 [2022-07-22 23:34:00,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:34:00,200 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 2 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3924 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:00,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3924 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 23:34:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-07-22 23:34:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3127. [2022-07-22 23:34:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 2448 states have (on average 1.3819444444444444) internal successors, (3383), 2448 states have internal predecessors, (3383), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-22 23:34:00,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 4483 transitions. [2022-07-22 23:34:00,292 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 4483 transitions. Word has length 687 [2022-07-22 23:34:00,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:00,292 INFO L495 AbstractCegarLoop]: Abstraction has 3127 states and 4483 transitions. [2022-07-22 23:34:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.8) internal successors, (264), 4 states have internal predecessors, (264), 2 states have call successors, (60), 2 states have call predecessors, (60), 3 states have return successors, (53), 3 states have call predecessors, (53), 2 states have call successors, (53) [2022-07-22 23:34:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 4483 transitions. [2022-07-22 23:34:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2022-07-22 23:34:00,301 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:00,301 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:00,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-07-22 23:34:00,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 23:34:00,523 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:34:00,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:34:00,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1751353659, now seen corresponding path program 3 times [2022-07-22 23:34:00,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 23:34:00,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526700375] [2022-07-22 23:34:00,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 23:34:00,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 23:34:00,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 23:34:00,528 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-22 23:34:00,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-07-22 23:34:08,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 23:34:08,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 23:34:08,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:34:08,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:34:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 75 proven. 1 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2022-07-22 23:34:08,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:34:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 2336 trivial. 0 not checked. [2022-07-22 23:34:09,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 23:34:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526700375] [2022-07-22 23:34:09,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526700375] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:34:09,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 23:34:09,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 23:34:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55317587] [2022-07-22 23:34:09,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 23:34:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:34:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 23:34:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:34:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:34:09,531 INFO L87 Difference]: Start difference. First operand 3127 states and 4483 transitions. Second operand has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:34:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:34:10,176 INFO L93 Difference]: Finished difference Result 6263 states and 8999 transitions. [2022-07-22 23:34:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:34:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 745 [2022-07-22 23:34:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:34:10,186 INFO L225 Difference]: With dead ends: 6263 [2022-07-22 23:34:10,186 INFO L226 Difference]: Without dead ends: 3139 [2022-07-22 23:34:10,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1489 GetRequests, 1484 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:34:10,192 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 0 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2954 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:34:10,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2954 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:34:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-07-22 23:34:10,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2022-07-22 23:34:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2460 states have (on average 1.3800813008130082) internal successors, (3395), 2460 states have internal predecessors, (3395), 480 states have call successors, (480), 172 states have call predecessors, (480), 198 states have return successors, (620), 532 states have call predecessors, (620), 478 states have call successors, (620) [2022-07-22 23:34:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4495 transitions. [2022-07-22 23:34:10,269 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4495 transitions. Word has length 745 [2022-07-22 23:34:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:34:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4495 transitions. [2022-07-22 23:34:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.833333333333332) internal successors, (173), 6 states have internal predecessors, (173), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-22 23:34:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4495 transitions. [2022-07-22 23:34:10,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2022-07-22 23:34:10,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:34:10,279 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 14, 14, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:34:10,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0