./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 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-?-3598765 [2022-07-21 10:46:55,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:46:55,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:46:55,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:46:55,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:46:55,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:46:55,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:46:55,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:46:55,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:46:55,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:46:55,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:46:55,266 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:46:55,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:46:55,269 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:46:55,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:46:55,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:46:55,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:46:55,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:46:55,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:46:55,279 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:46:55,282 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:46:55,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:46:55,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:46:55,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:46:55,286 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:46:55,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:46:55,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:46:55,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:46:55,291 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:46:55,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:46:55,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:46:55,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:46:55,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:46:55,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:46:55,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:46:55,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:46:55,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:46:55,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:46:55,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:46:55,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:46:55,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:46:55,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:46:55,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:46:55,325 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:46:55,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:46:55,326 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:46:55,326 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:46:55,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:46:55,327 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:46:55,327 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:46:55,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:46:55,327 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:46:55,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:46:55,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:46:55,329 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:46:55,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:46:55,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:46:55,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:46:55,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:46:55,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:46:55,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:46:55,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:46:55,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-21 10:46:55,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:46:55,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:46:55,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:46:55,676 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:46:55,678 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:46:55,680 INFO L432 ainManager$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 [2022-07-21 10:46:55,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d6a071c/49c73dcc841e454693052c737141daf4/FLAGd7adc7cb3 [2022-07-21 10:46:56,424 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:46:56,425 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 [2022-07-21 10:46:56,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d6a071c/49c73dcc841e454693052c737141daf4/FLAGd7adc7cb3 [2022-07-21 10:46:56,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8d6a071c/49c73dcc841e454693052c737141daf4 [2022-07-21 10:46:56,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:46:56,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:46:56,585 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:46:56,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:46:56,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:46:56,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:46:56" (1/1) ... [2022-07-21 10:46:56,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@253c07b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:46:56, skipping insertion in model container [2022-07-21 10:46:56,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:46:56" (1/1) ... [2022-07-21 10:46:56,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:46:56,696 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:46:57,761 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] [2022-07-21 10:46:57,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:46:57,853 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:46:58,072 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 10:46:58,078 INFO L158 Benchmark]: Toolchain (without parser) took 1492.82ms. Allocated memory was 56.6MB in the beginning and 115.3MB in the end (delta: 58.7MB). Free memory was 27.7MB in the beginning and 72.2MB in the end (delta: -44.6MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2022-07-21 10:46:58,079 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 10:46:58,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1490.97ms. Allocated memory was 56.6MB in the beginning and 115.3MB in the end (delta: 58.7MB). Free memory was 27.5MB in the beginning and 72.2MB in the end (delta: -44.8MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-07-21 10:46:58,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory is still 38.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1490.97ms. Allocated memory was 56.6MB in the beginning and 115.3MB in the end (delta: 58.7MB). Free memory was 27.5MB in the beginning and 72.2MB in the end (delta: -44.8MB). Peak memory consumption was 25.7MB. 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-?-3598765 [2022-07-21 10:46:59,794 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:46:59,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:46:59,840 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:46:59,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:46:59,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:46:59,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:46:59,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:46:59,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:46:59,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:46:59,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:46:59,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:46:59,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:46:59,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:46:59,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:46:59,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:46:59,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:46:59,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:46:59,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:46:59,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:46:59,875 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:46:59,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:46:59,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:46:59,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:46:59,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:46:59,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:46:59,891 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:46:59,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:46:59,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:46:59,893 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:46:59,894 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:46:59,894 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:46:59,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:46:59,896 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:46:59,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:46:59,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:46:59,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:46:59,899 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:46:59,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:46:59,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:46:59,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:46:59,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:46:59,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 10:46:59,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:46:59,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:46:59,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:46:59,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:46:59,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:46:59,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:46:59,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:46:59,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:46:59,944 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:46:59,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:46:59,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:46:59,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:46:59,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:46:59,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:46:59,946 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 10:46:59,947 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 10:46:59,947 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 10:46:59,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:46:59,947 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:46:59,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:46:59,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:46:59,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:46:59,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:46:59,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:46:59,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:46:59,949 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:46:59,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:46:59,949 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 10:46:59,949 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 10:46:59,949 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:46:59,950 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:46:59,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:46:59,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 10:46:59,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2022-07-21 10:47:00,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:47:00,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:47:00,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:47:00,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:47:00,283 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:47:00,285 INFO L432 ainManager$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 [2022-07-21 10:47:00,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c643b49c0/aa7f97d886d0438aafa1d50547ec6e9a/FLAG022c2bada [2022-07-21 10:47:01,046 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:47:01,047 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 [2022-07-21 10:47:01,085 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c643b49c0/aa7f97d886d0438aafa1d50547ec6e9a/FLAG022c2bada [2022-07-21 10:47:01,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c643b49c0/aa7f97d886d0438aafa1d50547ec6e9a [2022-07-21 10:47:01,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:47:01,351 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:47:01,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:47:01,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:47:01,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:47:01,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:47:01" (1/1) ... [2022-07-21 10:47:01,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a178570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:01, skipping insertion in model container [2022-07-21 10:47:01,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:47:01" (1/1) ... [2022-07-21 10:47:01,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:47:01,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:47:02,667 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] [2022-07-21 10:47:02,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:47:02,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 10:47:02,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:47:03,050 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] [2022-07-21 10:47:03,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:47:03,086 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:47:03,245 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] [2022-07-21 10:47:03,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:47:03,411 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:47:03,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03 WrapperNode [2022-07-21 10:47:03,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:47:03,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:47:03,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:47:03,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:47:03,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,635 INFO L137 Inliner]: procedures = 206, calls = 979, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2401 [2022-07-21 10:47:03,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:47:03,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:47:03,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:47:03,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:47:03,644 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:47:03,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:47:03,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:47:03,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:47:03,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (1/1) ... [2022-07-21 10:47:03,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:47:03,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:47:03,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 10:47:03,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 10:47:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 10:47:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 10:47:03,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 10:47:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:47:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2022-07-21 10:47:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2022-07-21 10:47:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-21 10:47:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-21 10:47:03,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:47:03,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:47:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2022-07-21 10:47:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2022-07-21 10:47:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-07-21 10:47:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-07-21 10:47:03,867 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 10:47:03,867 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 10:47:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:47:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:47:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 10:47:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 10:47:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2022-07-21 10:47:03,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2022-07-21 10:47:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:47:03,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:47:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2022-07-21 10:47:03,869 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2022-07-21 10:47:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 10:47:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 10:47:03,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:47:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 10:47:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-21 10:47:03,870 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-21 10:47:03,870 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2022-07-21 10:47:03,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 10:47:03,871 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 10:47:03,871 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 10:47:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2022-07-21 10:47:03,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2022-07-21 10:47:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2022-07-21 10:47:03,872 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2022-07-21 10:47:03,872 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-07-21 10:47:03,873 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-07-21 10:47:03,873 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2022-07-21 10:47:03,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2022-07-21 10:47:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-21 10:47:03,874 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-21 10:47:03,874 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2022-07-21 10:47:03,875 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2022-07-21 10:47:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2022-07-21 10:47:03,876 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2022-07-21 10:47:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-07-21 10:47:03,876 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-07-21 10:47:03,876 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2022-07-21 10:47:03,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2022-07-21 10:47:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 10:47:03,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 10:47:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2022-07-21 10:47:03,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2022-07-21 10:47:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 10:47:03,877 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 10:47:03,877 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2022-07-21 10:47:03,878 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2022-07-21 10:47:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 10:47:03,878 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 10:47:03,878 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-07-21 10:47:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-07-21 10:47:03,879 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-07-21 10:47:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-07-21 10:47:03,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 10:47:03,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 10:47:03,879 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2022-07-21 10:47:03,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2022-07-21 10:47:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2022-07-21 10:47:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2022-07-21 10:47:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:47:03,880 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-07-21 10:47:03,880 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-07-21 10:47:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:47:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2022-07-21 10:47:03,881 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2022-07-21 10:47:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2022-07-21 10:47:03,881 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2022-07-21 10:47:03,881 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2022-07-21 10:47:03,882 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2022-07-21 10:47:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:47:03,882 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2022-07-21 10:47:03,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2022-07-21 10:47:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2022-07-21 10:47:03,883 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2022-07-21 10:47:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2022-07-21 10:47:03,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2022-07-21 10:47:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2022-07-21 10:47:03,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2022-07-21 10:47:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:47:03,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:47:04,373 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:47:04,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:47:22,963 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:47:22,976 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:47:22,976 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:47:22,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:47:22 BoogieIcfgContainer [2022-07-21 10:47:22,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:47:22,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:47:22,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:47:22,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:47:22,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:47:01" (1/3) ... [2022-07-21 10:47:22,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427b50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:47:22, skipping insertion in model container [2022-07-21 10:47:22,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:47:03" (2/3) ... [2022-07-21 10:47:22,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3427b50b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:47:22, skipping insertion in model container [2022-07-21 10:47:22,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:47:22" (3/3) ... [2022-07-21 10:47:22,986 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2022-07-21 10:47:22,998 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:47:22,998 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:47:23,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:47:23,056 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@723f0806, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2af760d4 [2022-07-21 10:47:23,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:47:23,063 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) [2022-07-21 10:47:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 10:47:23,083 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:23,083 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] [2022-07-21 10:47:23,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:23,088 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2022-07-21 10:47:23,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:23,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434628610] [2022-07-21 10:47:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:23,103 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:23,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 10:47:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:24,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:24,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:24,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:24,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:24,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:24,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434628610] [2022-07-21 10:47:24,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434628610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:24,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:24,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:24,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505419078] [2022-07-21 10:47:24,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:24,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:24,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:24,639 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) [2022-07-21 10:47:26,808 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:27,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:27,374 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2022-07-21 10:47:27,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:27,377 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 [2022-07-21 10:47:27,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:27,398 INFO L225 Difference]: With dead ends: 2070 [2022-07-21 10:47:27,399 INFO L226 Difference]: Without dead ends: 1369 [2022-07-21 10:47:27,407 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 [2022-07-21 10:47:27,411 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, 2.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:47:27,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-07-21 10:47:27,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-07-21 10:47:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2022-07-21 10:47:27,529 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) [2022-07-21 10:47:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2022-07-21 10:47:27,545 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2022-07-21 10:47:27,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:27,545 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2022-07-21 10:47:27,546 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) [2022-07-21 10:47:27,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2022-07-21 10:47:27,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 10:47:27,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:27,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:47:27,588 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:27,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:27,768 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:27,768 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2022-07-21 10:47:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117679924] [2022-07-21 10:47:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:27,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:27,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:27,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:27,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 10:47:28,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:28,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:28,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:28,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:28,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:28,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117679924] [2022-07-21 10:47:28,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117679924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:28,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:28,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:28,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12915411] [2022-07-21 10:47:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:28,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:28,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:28,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:28,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:28,868 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) [2022-07-21 10:47:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:29,121 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2022-07-21 10:47:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:29,122 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 [2022-07-21 10:47:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:29,133 INFO L225 Difference]: With dead ends: 1391 [2022-07-21 10:47:29,133 INFO L226 Difference]: Without dead ends: 1378 [2022-07-21 10:47:29,135 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 [2022-07-21 10:47:29,139 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-07-21 10:47:29,139 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] [2022-07-21 10:47:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-07-21 10:47:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2022-07-21 10:47:29,199 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) [2022-07-21 10:47:29,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2022-07-21 10:47:29,247 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2022-07-21 10:47:29,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:29,248 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2022-07-21 10:47:29,248 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) [2022-07-21 10:47:29,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2022-07-21 10:47:29,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-21 10:47:29,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:29,251 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] [2022-07-21 10:47:29,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:29,469 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:29,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:29,469 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2022-07-21 10:47:29,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:29,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141060230] [2022-07-21 10:47:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:29,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:29,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:29,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:29,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 10:47:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:30,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:30,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:31,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:31,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:31,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141060230] [2022-07-21 10:47:31,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141060230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:31,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:31,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:31,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462808264] [2022-07-21 10:47:31,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:31,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:31,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:31,160 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) [2022-07-21 10:47:33,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:33,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:33,407 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2022-07-21 10:47:33,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:33,408 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 [2022-07-21 10:47:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:33,414 INFO L225 Difference]: With dead ends: 1367 [2022-07-21 10:47:33,414 INFO L226 Difference]: Without dead ends: 1364 [2022-07-21 10:47:33,415 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 [2022-07-21 10:47:33,416 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 [2022-07-21 10:47:33,417 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] [2022-07-21 10:47:33,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-07-21 10:47:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2022-07-21 10:47:33,455 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) [2022-07-21 10:47:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2022-07-21 10:47:33,462 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2022-07-21 10:47:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:33,463 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2022-07-21 10:47:33,463 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) [2022-07-21 10:47:33,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2022-07-21 10:47:33,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-21 10:47:33,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:33,466 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] [2022-07-21 10:47:33,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:33,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:33,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:33,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2022-07-21 10:47:33,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90728154] [2022-07-21 10:47:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:33,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:33,683 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:33,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 10:47:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:34,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:34,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:35,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:35,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:35,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90728154] [2022-07-21 10:47:35,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90728154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:35,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:35,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:35,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820980308] [2022-07-21 10:47:35,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:35,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:35,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:35,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:35,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:35,330 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) [2022-07-21 10:47:37,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:37,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:37,603 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2022-07-21 10:47:37,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:37,604 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 [2022-07-21 10:47:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:37,611 INFO L225 Difference]: With dead ends: 1366 [2022-07-21 10:47:37,611 INFO L226 Difference]: Without dead ends: 1363 [2022-07-21 10:47:37,612 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 [2022-07-21 10:47:37,615 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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 [2022-07-21 10:47:37,616 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] [2022-07-21 10:47:37,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2022-07-21 10:47:37,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2022-07-21 10:47:37,656 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) [2022-07-21 10:47:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2022-07-21 10:47:37,665 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2022-07-21 10:47:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:37,666 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2022-07-21 10:47:37,666 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) [2022-07-21 10:47:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2022-07-21 10:47:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-21 10:47:37,668 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:37,668 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] [2022-07-21 10:47:37,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:37,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:37,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:37,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:37,884 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2022-07-21 10:47:37,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:37,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580812610] [2022-07-21 10:47:37,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:37,886 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:37,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:37,887 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:37,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 10:47:38,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:38,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1180 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:38,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:39,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:39,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:39,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:39,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580812610] [2022-07-21 10:47:39,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580812610] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:39,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:39,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:39,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225117947] [2022-07-21 10:47:39,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:39,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:39,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:39,753 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) [2022-07-21 10:47:41,895 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:42,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:42,007 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2022-07-21 10:47:42,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:42,007 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 [2022-07-21 10:47:42,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:42,014 INFO L225 Difference]: With dead ends: 1365 [2022-07-21 10:47:42,014 INFO L226 Difference]: Without dead ends: 1362 [2022-07-21 10:47:42,015 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 [2022-07-21 10:47:42,016 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:47:42,016 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] [2022-07-21 10:47:42,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-07-21 10:47:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2022-07-21 10:47:42,055 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) [2022-07-21 10:47:42,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2022-07-21 10:47:42,062 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2022-07-21 10:47:42,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:42,062 INFO L495 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2022-07-21 10:47:42,067 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) [2022-07-21 10:47:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2022-07-21 10:47:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 10:47:42,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:42,070 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] [2022-07-21 10:47:42,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-07-21 10:47:42,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:42,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2022-07-21 10:47:42,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:42,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152959882] [2022-07-21 10:47:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:42,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:42,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:42,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:42,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 10:47:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:43,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1181 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:43,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:44,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:44,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:44,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152959882] [2022-07-21 10:47:44,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152959882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:44,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:44,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:44,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457659543] [2022-07-21 10:47:44,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:44,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:44,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:44,110 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) [2022-07-21 10:47:46,213 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 [] [2022-07-21 10:47:46,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:46,363 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2022-07-21 10:47:46,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:46,364 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 [2022-07-21 10:47:46,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:46,372 INFO L225 Difference]: With dead ends: 1364 [2022-07-21 10:47:46,372 INFO L226 Difference]: Without dead ends: 1361 [2022-07-21 10:47:46,373 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 [2022-07-21 10:47:46,374 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 [2022-07-21 10:47:46,374 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] [2022-07-21 10:47:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-07-21 10:47:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2022-07-21 10:47:46,415 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) [2022-07-21 10:47:46,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2022-07-21 10:47:46,424 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2022-07-21 10:47:46,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:46,424 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2022-07-21 10:47:46,424 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) [2022-07-21 10:47:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2022-07-21 10:47:46,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 10:47:46,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:46,429 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] [2022-07-21 10:47:46,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:46,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:46,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:46,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2022-07-21 10:47:46,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:46,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251893163] [2022-07-21 10:47:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:46,649 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:46,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:46,651 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:46,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 10:47:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:47,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:47,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 10:47:48,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:48,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:48,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251893163] [2022-07-21 10:47:48,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251893163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:48,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:48,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:48,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268693083] [2022-07-21 10:47:48,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:48,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:48,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:48,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:48,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:48,638 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) [2022-07-21 10:47:50,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:47:51,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:51,058 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2022-07-21 10:47:51,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:51,059 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 [2022-07-21 10:47:51,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:51,070 INFO L225 Difference]: With dead ends: 3323 [2022-07-21 10:47:51,071 INFO L226 Difference]: Without dead ends: 1957 [2022-07-21 10:47:51,076 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 [2022-07-21 10:47:51,077 INFO L413 NwaCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s 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 [2022-07-21 10:47:51,078 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] [2022-07-21 10:47:51,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2022-07-21 10:47:51,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2022-07-21 10:47:51,184 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) [2022-07-21 10:47:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2022-07-21 10:47:51,193 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2022-07-21 10:47:51,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:51,194 INFO L495 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2022-07-21 10:47:51,194 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) [2022-07-21 10:47:51,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2022-07-21 10:47:51,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-07-21 10:47:51,201 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:51,202 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] [2022-07-21 10:47:51,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:51,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:51,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:51,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash -278866688, now seen corresponding path program 1 times [2022-07-21 10:47:51,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:51,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354781267] [2022-07-21 10:47:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:51,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:51,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:51,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 10:47:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:53,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2898 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:47:53,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-07-21 10:47:54,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:54,282 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:54,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354781267] [2022-07-21 10:47:54,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354781267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:54,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:54,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:47:54,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376841193] [2022-07-21 10:47:54,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:54,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:47:54,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:47:54,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:47:54,285 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) [2022-07-21 10:47:54,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:54,843 INFO L93 Difference]: Finished difference Result 4599 states and 6524 transitions. [2022-07-21 10:47:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:47:54,844 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 [2022-07-21 10:47:54,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:54,860 INFO L225 Difference]: With dead ends: 4599 [2022-07-21 10:47:54,861 INFO L226 Difference]: Without dead ends: 2651 [2022-07-21 10:47:54,868 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 [2022-07-21 10:47:54,868 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:47:54,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 2005 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 10:47:54,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-21 10:47:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-21 10:47:54,964 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) [2022-07-21 10:47:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2022-07-21 10:47:54,974 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2022-07-21 10:47:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:54,974 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2022-07-21 10:47:54,974 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) [2022-07-21 10:47:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2022-07-21 10:47:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 10:47:54,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:54,986 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] [2022-07-21 10:47:55,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:55,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:55,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:55,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:55,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1362685847, now seen corresponding path program 1 times [2022-07-21 10:47:55,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:55,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089998710] [2022-07-21 10:47:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:55,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:55,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:55,207 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:55,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 10:47:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:47:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:47:57,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:47:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-07-21 10:47:58,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:47:58,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:47:58,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089998710] [2022-07-21 10:47:58,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089998710] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:47:58,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:47:58,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:47:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654732453] [2022-07-21 10:47:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:47:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:47:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:47:58,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:47:58,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:47:58,128 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) [2022-07-21 10:47:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:47:58,588 INFO L93 Difference]: Finished difference Result 5315 states and 7623 transitions. [2022-07-21 10:47:58,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:47:58,588 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 [2022-07-21 10:47:58,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:47:58,603 INFO L225 Difference]: With dead ends: 5315 [2022-07-21 10:47:58,604 INFO L226 Difference]: Without dead ends: 2667 [2022-07-21 10:47:58,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:47:58,615 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 [2022-07-21 10:47:58,615 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] [2022-07-21 10:47:58,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-07-21 10:47:58,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 2663. [2022-07-21 10:47:58,715 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) [2022-07-21 10:47:58,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3806 transitions. [2022-07-21 10:47:58,726 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3806 transitions. Word has length 225 [2022-07-21 10:47:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:47:58,726 INFO L495 AbstractCegarLoop]: Abstraction has 2663 states and 3806 transitions. [2022-07-21 10:47:58,727 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) [2022-07-21 10:47:58,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3806 transitions. [2022-07-21 10:47:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-21 10:47:58,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:47:58,737 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] [2022-07-21 10:47:58,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 10:47:58,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:47:58,948 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:47:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:47:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1370684821, now seen corresponding path program 1 times [2022-07-21 10:47:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:47:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843108152] [2022-07-21 10:47:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:47:58,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:47:58,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:47:58,951 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:47:58,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 10:48:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:01,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 10:48:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:04,423 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-21 10:48:04,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:04,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:04,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843108152] [2022-07-21 10:48:04,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843108152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:04,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:04,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 10:48:04,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374248626] [2022-07-21 10:48:04,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:04,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 10:48:04,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:04,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 10:48:04,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:48:04,425 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) [2022-07-21 10:48:06,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:06,890 INFO L93 Difference]: Finished difference Result 5371 states and 7707 transitions. [2022-07-21 10:48:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 10:48:06,891 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 [2022-07-21 10:48:06,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:06,913 INFO L225 Difference]: With dead ends: 5371 [2022-07-21 10:48:06,913 INFO L226 Difference]: Without dead ends: 2711 [2022-07-21 10:48:06,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:48:06,926 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 7 mSDsluCounter, 6888 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:06,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7876 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-21 10:48:06,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-21 10:48:07,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-21 10:48:07,036 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) [2022-07-21 10:48:07,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3870 transitions. [2022-07-21 10:48:07,046 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3870 transitions. Word has length 225 [2022-07-21 10:48:07,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:07,048 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3870 transitions. [2022-07-21 10:48:07,049 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) [2022-07-21 10:48:07,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3870 transitions. [2022-07-21 10:48:07,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-21 10:48:07,059 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:07,059 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] [2022-07-21 10:48:07,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:07,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:07,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:07,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1261399318, now seen corresponding path program 1 times [2022-07-21 10:48:07,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:07,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772247670] [2022-07-21 10:48:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:07,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:07,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:07,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:07,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 10:48:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:10,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:48:10,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:10,411 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-21 10:48:10,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:10,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:10,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772247670] [2022-07-21 10:48:10,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772247670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:10,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:10,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:48:10,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468103456] [2022-07-21 10:48:10,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:10,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:48:10,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:48:10,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:48:10,413 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) [2022-07-21 10:48:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:11,260 INFO L93 Difference]: Finished difference Result 5419 states and 7787 transitions. [2022-07-21 10:48:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:48:11,261 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 [2022-07-21 10:48:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:11,278 INFO L225 Difference]: With dead ends: 5419 [2022-07-21 10:48:11,279 INFO L226 Difference]: Without dead ends: 2723 [2022-07-21 10:48:11,288 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 [2022-07-21 10:48:11,289 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:11,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 10:48:11,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-07-21 10:48:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2022-07-21 10:48:11,378 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) [2022-07-21 10:48:11,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3884 transitions. [2022-07-21 10:48:11,388 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3884 transitions. Word has length 228 [2022-07-21 10:48:11,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:11,389 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3884 transitions. [2022-07-21 10:48:11,389 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) [2022-07-21 10:48:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3884 transitions. [2022-07-21 10:48:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-21 10:48:11,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:11,401 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] [2022-07-21 10:48:11,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:11,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:11,616 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:11,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1945602355, now seen corresponding path program 1 times [2022-07-21 10:48:11,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:11,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134460207] [2022-07-21 10:48:11,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:11,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:11,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:11,619 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:11,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 10:48:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:14,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2998 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 10:48:14,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 10:48:15,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:15,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:15,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134460207] [2022-07-21 10:48:15,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134460207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:15,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:15,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:48:15,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797173224] [2022-07-21 10:48:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:15,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:48:15,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:48:15,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:48:15,951 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) [2022-07-21 10:48:17,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:17,547 INFO L93 Difference]: Finished difference Result 5459 states and 7831 transitions. [2022-07-21 10:48:17,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:48:17,549 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 [2022-07-21 10:48:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:17,565 INFO L225 Difference]: With dead ends: 5459 [2022-07-21 10:48:17,566 INFO L226 Difference]: Without dead ends: 2751 [2022-07-21 10:48:17,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:48:17,577 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, 1.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:17,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4936 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-21 10:48:17,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2022-07-21 10:48:17,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 2723. [2022-07-21 10:48:17,671 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) [2022-07-21 10:48:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2723 states to 2723 states and 3896 transitions. [2022-07-21 10:48:17,680 INFO L78 Accepts]: Start accepts. Automaton has 2723 states and 3896 transitions. Word has length 238 [2022-07-21 10:48:17,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:17,680 INFO L495 AbstractCegarLoop]: Abstraction has 2723 states and 3896 transitions. [2022-07-21 10:48:17,680 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) [2022-07-21 10:48:17,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2723 states and 3896 transitions. [2022-07-21 10:48:17,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-21 10:48:17,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:17,691 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] [2022-07-21 10:48:17,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:17,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:17,912 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:17,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:17,912 INFO L85 PathProgramCache]: Analyzing trace with hash 332974640, now seen corresponding path program 2 times [2022-07-21 10:48:17,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:17,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173754567] [2022-07-21 10:48:17,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:48:17,915 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:17,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:17,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:17,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 10:48:19,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:48:19,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:48:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:48:19,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-07-21 10:48:20,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:20,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:20,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173754567] [2022-07-21 10:48:20,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173754567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:20,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:20,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:48:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698181581] [2022-07-21 10:48:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:48:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:48:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:48:20,158 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) [2022-07-21 10:48:22,259 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 [] [2022-07-21 10:48:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:22,453 INFO L93 Difference]: Finished difference Result 3548 states and 4926 transitions. [2022-07-21 10:48:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:48:22,454 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 [2022-07-21 10:48:22,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:22,476 INFO L225 Difference]: With dead ends: 3548 [2022-07-21 10:48:22,476 INFO L226 Difference]: Without dead ends: 2711 [2022-07-21 10:48:22,480 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 [2022-07-21 10:48:22,481 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, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:22,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 10:48:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2711 states. [2022-07-21 10:48:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2711 to 2699. [2022-07-21 10:48:22,574 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) [2022-07-21 10:48:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-21 10:48:22,582 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 241 [2022-07-21 10:48:22,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:22,582 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-21 10:48:22,583 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) [2022-07-21 10:48:22,583 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-21 10:48:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-21 10:48:22,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:22,600 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] [2022-07-21 10:48:22,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:22,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:22,816 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:22,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:22,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2084236656, now seen corresponding path program 1 times [2022-07-21 10:48:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:22,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232236073] [2022-07-21 10:48:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:22,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:22,820 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:22,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 10:48:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:27,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 4834 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:48:27,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:27,720 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 788 trivial. 0 not checked. [2022-07-21 10:48:27,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:27,721 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:27,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232236073] [2022-07-21 10:48:27,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232236073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:27,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:27,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:48:27,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487121283] [2022-07-21 10:48:27,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:27,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:48:27,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:48:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:48:27,725 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) [2022-07-21 10:48:29,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:29,389 INFO L93 Difference]: Finished difference Result 5443 states and 7785 transitions. [2022-07-21 10:48:29,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:48:29,390 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 [2022-07-21 10:48:29,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:29,401 INFO L225 Difference]: With dead ends: 5443 [2022-07-21 10:48:29,402 INFO L226 Difference]: Without dead ends: 2747 [2022-07-21 10:48:29,410 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 [2022-07-21 10:48:29,411 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, 1.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:29,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3927 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-21 10:48:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2022-07-21 10:48:29,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2699. [2022-07-21 10:48:29,492 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) [2022-07-21 10:48:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 3859 transitions. [2022-07-21 10:48:29,499 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 3859 transitions. Word has length 440 [2022-07-21 10:48:29,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:29,499 INFO L495 AbstractCegarLoop]: Abstraction has 2699 states and 3859 transitions. [2022-07-21 10:48:29,499 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) [2022-07-21 10:48:29,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 3859 transitions. [2022-07-21 10:48:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-07-21 10:48:29,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:29,514 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] [2022-07-21 10:48:29,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:29,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:29,732 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:29,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:29,732 INFO L85 PathProgramCache]: Analyzing trace with hash 735862630, now seen corresponding path program 1 times [2022-07-21 10:48:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:29,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525950975] [2022-07-21 10:48:29,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:29,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:29,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:29,737 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:29,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 10:48:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:34,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:48:34,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 753 trivial. 0 not checked. [2022-07-21 10:48:34,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:34,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:34,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525950975] [2022-07-21 10:48:34,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525950975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:34,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:34,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:48:34,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742348624] [2022-07-21 10:48:34,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:34,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:48:34,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:34,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:48:34,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:48:34,891 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) [2022-07-21 10:48:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:35,580 INFO L93 Difference]: Finished difference Result 5423 states and 7765 transitions. [2022-07-21 10:48:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:48:35,581 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 [2022-07-21 10:48:35,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:35,592 INFO L225 Difference]: With dead ends: 5423 [2022-07-21 10:48:35,593 INFO L226 Difference]: Without dead ends: 2727 [2022-07-21 10:48:35,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:48:35,602 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, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:35,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2953 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 10:48:35,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2022-07-21 10:48:35,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2707. [2022-07-21 10:48:35,689 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) [2022-07-21 10:48:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3867 transitions. [2022-07-21 10:48:35,697 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3867 transitions. Word has length 440 [2022-07-21 10:48:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:35,698 INFO L495 AbstractCegarLoop]: Abstraction has 2707 states and 3867 transitions. [2022-07-21 10:48:35,698 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) [2022-07-21 10:48:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3867 transitions. [2022-07-21 10:48:35,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2022-07-21 10:48:35,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:35,714 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] [2022-07-21 10:48:35,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:35,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:35,928 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:35,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:35,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1782441170, now seen corresponding path program 1 times [2022-07-21 10:48:35,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:35,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1233658055] [2022-07-21 10:48:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:35,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:35,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:35,933 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:35,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 10:48:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:48:40,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 5022 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-21 10:48:40,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 242 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-21 10:48:42,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:42,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:42,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1233658055] [2022-07-21 10:48:42,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1233658055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:42,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:42,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:48:42,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962752797] [2022-07-21 10:48:42,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:42,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:48:42,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:48:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:48:42,220 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) [2022-07-21 10:48:43,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:43,235 INFO L93 Difference]: Finished difference Result 5459 states and 7801 transitions. [2022-07-21 10:48:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 10:48:43,237 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 [2022-07-21 10:48:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:43,251 INFO L225 Difference]: With dead ends: 5459 [2022-07-21 10:48:43,252 INFO L226 Difference]: Without dead ends: 2755 [2022-07-21 10:48:43,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:48:43,261 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 6 mSDsluCounter, 3948 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:43,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4939 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 10:48:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-21 10:48:43,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2719. [2022-07-21 10:48:43,372 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) [2022-07-21 10:48:43,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3879 transitions. [2022-07-21 10:48:43,380 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3879 transitions. Word has length 486 [2022-07-21 10:48:43,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:43,380 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3879 transitions. [2022-07-21 10:48:43,380 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) [2022-07-21 10:48:43,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3879 transitions. [2022-07-21 10:48:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-07-21 10:48:43,391 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:43,391 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] [2022-07-21 10:48:43,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:43,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:43,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1213120962, now seen corresponding path program 2 times [2022-07-21 10:48:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899804905] [2022-07-21 10:48:43,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:48:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:43,618 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 10:48:43,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 10:48:49,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 10:48:49,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:48:49,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 5056 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 10:48:49,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1230 backedges. 316 proven. 0 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-21 10:48:51,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:51,788 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899804905] [2022-07-21 10:48:51,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899804905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:51,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:51,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 10:48:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025269322] [2022-07-21 10:48:51,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 10:48:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 10:48:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:48:51,790 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) [2022-07-21 10:48:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:52,576 INFO L93 Difference]: Finished difference Result 5491 states and 7837 transitions. [2022-07-21 10:48:52,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:48:52,577 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 [2022-07-21 10:48:52,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:52,589 INFO L225 Difference]: With dead ends: 5491 [2022-07-21 10:48:52,589 INFO L226 Difference]: Without dead ends: 2775 [2022-07-21 10:48:52,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:48:52,599 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 6 mSDsluCounter, 4956 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5952 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:48:52,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5952 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 10:48:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2022-07-21 10:48:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2739. [2022-07-21 10:48:52,694 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) [2022-07-21 10:48:52,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3903 transitions. [2022-07-21 10:48:52,703 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3903 transitions. Word has length 492 [2022-07-21 10:48:52,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:52,703 INFO L495 AbstractCegarLoop]: Abstraction has 2739 states and 3903 transitions. [2022-07-21 10:48:52,704 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) [2022-07-21 10:48:52,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3903 transitions. [2022-07-21 10:48:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2022-07-21 10:48:52,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:52,715 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] [2022-07-21 10:48:52,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 10:48:52,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:52,936 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1711081881, now seen corresponding path program 3 times [2022-07-21 10:48:52,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:52,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709286711] [2022-07-21 10:48:52,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 10:48:52,940 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:52,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:52,941 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) [2022-07-21 10:48:52,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 10:48:57,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 10:48:57,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:48:57,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 2052 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:48:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:48:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1302 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-07-21 10:48:58,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:48:58,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:48:58,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709286711] [2022-07-21 10:48:58,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709286711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:48:58,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:48:58,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:48:58,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025440462] [2022-07-21 10:48:58,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:48:58,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:48:58,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:48:58,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:48:58,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:48:58,296 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) [2022-07-21 10:48:58,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:48:58,954 INFO L93 Difference]: Finished difference Result 5503 states and 7899 transitions. [2022-07-21 10:48:58,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:48:58,955 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 [2022-07-21 10:48:58,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:48:58,966 INFO L225 Difference]: With dead ends: 5503 [2022-07-21 10:48:58,966 INFO L226 Difference]: Without dead ends: 2767 [2022-07-21 10:48:58,975 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 [2022-07-21 10:48:58,975 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 [2022-07-21 10:48:58,976 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] [2022-07-21 10:48:58,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-07-21 10:48:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2755. [2022-07-21 10:48:59,072 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) [2022-07-21 10:48:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2755 states to 2755 states and 3961 transitions. [2022-07-21 10:48:59,080 INFO L78 Accepts]: Start accepts. Automaton has 2755 states and 3961 transitions. Word has length 501 [2022-07-21 10:48:59,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:48:59,081 INFO L495 AbstractCegarLoop]: Abstraction has 2755 states and 3961 transitions. [2022-07-21 10:48:59,081 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) [2022-07-21 10:48:59,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2755 states and 3961 transitions. [2022-07-21 10:48:59,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-07-21 10:48:59,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:48:59,093 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:48:59,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-07-21 10:48:59,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:48:59,309 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:48:59,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:48:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash 577896194, now seen corresponding path program 1 times [2022-07-21 10:48:59,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:48:59,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980437035] [2022-07-21 10:48:59,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:48:59,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:48:59,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:48:59,314 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) [2022-07-21 10:48:59,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 10:49:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:05,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 5832 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 10:49:05,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:07,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 393 proven. 0 refuted. 0 times theorem prover too weak. 971 trivial. 0 not checked. [2022-07-21 10:49:07,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:07,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:07,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980437035] [2022-07-21 10:49:07,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980437035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:07,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:07,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 10:49:07,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30968850] [2022-07-21 10:49:07,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:07,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 10:49:07,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 10:49:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:49:07,338 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) [2022-07-21 10:49:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:08,121 INFO L93 Difference]: Finished difference Result 5551 states and 7985 transitions. [2022-07-21 10:49:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 10:49:08,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 5 states have internal predecessors, (191), 2 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (38), 4 states have call predecessors, (38), 2 states have call successors, (38) Word has length 556 [2022-07-21 10:49:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:08,134 INFO L225 Difference]: With dead ends: 5551 [2022-07-21 10:49:08,134 INFO L226 Difference]: Without dead ends: 2799 [2022-07-21 10:49:08,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 550 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 10:49:08,146 INFO L413 NwaCegarLoop]: 995 mSDtfsCounter, 6 mSDsluCounter, 4951 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:08,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 5946 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 10:49:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-21 10:49:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2763. [2022-07-21 10:49:08,284 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) [2022-07-21 10:49:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 3969 transitions. [2022-07-21 10:49:08,293 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 3969 transitions. Word has length 556 [2022-07-21 10:49:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:08,294 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 3969 transitions. [2022-07-21 10:49:08,294 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) [2022-07-21 10:49:08,294 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 3969 transitions. [2022-07-21 10:49:08,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-21 10:49:08,305 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:08,306 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:49:08,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:08,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:08,520 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:08,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1327618987, now seen corresponding path program 2 times [2022-07-21 10:49:08,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:08,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201290262] [2022-07-21 10:49:08,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:49:08,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:08,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:08,525 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) [2022-07-21 10:49:08,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-07-21 10:49:10,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:49:10,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:49:11,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:49:11,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 1291 trivial. 0 not checked. [2022-07-21 10:49:11,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:11,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:11,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201290262] [2022-07-21 10:49:11,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201290262] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:11,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:11,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:49:11,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845656340] [2022-07-21 10:49:11,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:11,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:49:11,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:11,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:49:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:11,551 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) [2022-07-21 10:49:11,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:11,959 INFO L93 Difference]: Finished difference Result 5559 states and 8159 transitions. [2022-07-21 10:49:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:49:11,960 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.4) internal successors, (162), 4 states have internal predecessors, (162), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 559 [2022-07-21 10:49:11,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:11,973 INFO L225 Difference]: With dead ends: 5559 [2022-07-21 10:49:11,973 INFO L226 Difference]: Without dead ends: 2799 [2022-07-21 10:49:11,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:11,981 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 [2022-07-21 10:49:11,981 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] [2022-07-21 10:49:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-07-21 10:49:12,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2787. [2022-07-21 10:49:12,082 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) [2022-07-21 10:49:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4005 transitions. [2022-07-21 10:49:12,094 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4005 transitions. Word has length 559 [2022-07-21 10:49:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:12,095 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4005 transitions. [2022-07-21 10:49:12,096 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) [2022-07-21 10:49:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4005 transitions. [2022-07-21 10:49:12,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2022-07-21 10:49:12,108 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:12,108 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] [2022-07-21 10:49:12,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:12,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:12,324 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:12,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:12,324 INFO L85 PathProgramCache]: Analyzing trace with hash 303568379, now seen corresponding path program 1 times [2022-07-21 10:49:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:12,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367379837] [2022-07-21 10:49:12,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:12,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:12,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:12,330 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) [2022-07-21 10:49:12,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-07-21 10:49:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:18,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 5883 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-21 10:49:18,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1454 backedges. 493 proven. 0 refuted. 0 times theorem prover too weak. 961 trivial. 0 not checked. [2022-07-21 10:49:22,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:22,626 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:22,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367379837] [2022-07-21 10:49:22,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367379837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:22,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:22,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 10:49:22,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618110450] [2022-07-21 10:49:22,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:22,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 10:49:22,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:22,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 10:49:22,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:49:22,629 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) [2022-07-21 10:49:27,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:27,253 INFO L93 Difference]: Finished difference Result 5819 states and 8399 transitions. [2022-07-21 10:49:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 10:49:27,254 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 [2022-07-21 10:49:27,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:27,269 INFO L225 Difference]: With dead ends: 5819 [2022-07-21 10:49:27,269 INFO L226 Difference]: Without dead ends: 3035 [2022-07-21 10:49:27,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 555 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-21 10:49:27,280 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 116 mSDsluCounter, 9418 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:27,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 10482 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-21 10:49:27,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-07-21 10:49:27,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 2799. [2022-07-21 10:49:27,429 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) [2022-07-21 10:49:27,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 4017 transitions. [2022-07-21 10:49:27,438 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 4017 transitions. Word has length 565 [2022-07-21 10:49:27,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:27,439 INFO L495 AbstractCegarLoop]: Abstraction has 2799 states and 4017 transitions. [2022-07-21 10:49:27,439 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) [2022-07-21 10:49:27,439 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 4017 transitions. [2022-07-21 10:49:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 560 [2022-07-21 10:49:27,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:27,449 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] [2022-07-21 10:49:27,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:27,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:27,663 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:27,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 776342615, now seen corresponding path program 2 times [2022-07-21 10:49:27,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895587091] [2022-07-21 10:49:27,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:49:27,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:27,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:27,668 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) [2022-07-21 10:49:27,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-07-21 10:49:29,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 10:49:29,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:49:30,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:49:30,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1391 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2022-07-21 10:49:30,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:30,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:30,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895587091] [2022-07-21 10:49:30,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895587091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:30,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:30,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:49:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936268302] [2022-07-21 10:49:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:30,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:49:30,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:49:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:49:30,387 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) [2022-07-21 10:49:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:30,561 INFO L93 Difference]: Finished difference Result 5599 states and 8051 transitions. [2022-07-21 10:49:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:49:30,563 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 [2022-07-21 10:49:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:30,571 INFO L225 Difference]: With dead ends: 5599 [2022-07-21 10:49:30,571 INFO L226 Difference]: Without dead ends: 2803 [2022-07-21 10:49:30,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:49:30,579 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 [2022-07-21 10:49:30,580 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] [2022-07-21 10:49:30,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2803 states. [2022-07-21 10:49:30,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2803 to 2803. [2022-07-21 10:49:30,673 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) [2022-07-21 10:49:30,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 4021 transitions. [2022-07-21 10:49:30,682 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 4021 transitions. Word has length 559 [2022-07-21 10:49:30,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:30,683 INFO L495 AbstractCegarLoop]: Abstraction has 2803 states and 4021 transitions. [2022-07-21 10:49:30,683 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) [2022-07-21 10:49:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 4021 transitions. [2022-07-21 10:49:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2022-07-21 10:49:30,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:30,693 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] [2022-07-21 10:49:30,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:30,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:30,916 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:30,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:30,916 INFO L85 PathProgramCache]: Analyzing trace with hash 330953787, now seen corresponding path program 1 times [2022-07-21 10:49:30,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:30,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198886242] [2022-07-21 10:49:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:30,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:30,921 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) [2022-07-21 10:49:30,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-07-21 10:49:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:37,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 5871 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:49:37,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 432 proven. 0 refuted. 0 times theorem prover too weak. 964 trivial. 0 not checked. [2022-07-21 10:49:37,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:37,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:37,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198886242] [2022-07-21 10:49:37,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198886242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:37,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:37,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:49:37,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267185799] [2022-07-21 10:49:37,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:37,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:49:37,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:37,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:49:37,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:49:37,823 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) [2022-07-21 10:49:38,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:38,482 INFO L93 Difference]: Finished difference Result 5635 states and 8097 transitions. [2022-07-21 10:49:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:49:38,482 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 [2022-07-21 10:49:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:38,494 INFO L225 Difference]: With dead ends: 5635 [2022-07-21 10:49:38,494 INFO L226 Difference]: Without dead ends: 2835 [2022-07-21 10:49:38,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:49:38,503 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 [2022-07-21 10:49:38,504 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] [2022-07-21 10:49:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2835 states. [2022-07-21 10:49:38,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2835 to 2811. [2022-07-21 10:49:38,634 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) [2022-07-21 10:49:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4029 transitions. [2022-07-21 10:49:38,643 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4029 transitions. Word has length 561 [2022-07-21 10:49:38,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:38,643 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4029 transitions. [2022-07-21 10:49:38,643 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) [2022-07-21 10:49:38,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4029 transitions. [2022-07-21 10:49:38,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-07-21 10:49:38,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:38,653 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] [2022-07-21 10:49:38,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:38,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:38,876 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:38,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:38,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1650606693, now seen corresponding path program 1 times [2022-07-21 10:49:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:38,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327964161] [2022-07-21 10:49:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:49:38,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:38,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:38,882 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) [2022-07-21 10:49:38,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-07-21 10:49:45,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:49:45,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 5965 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 10:49:45,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:49:48,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1400 backedges. 445 proven. 0 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2022-07-21 10:49:48,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:49:48,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:49:48,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327964161] [2022-07-21 10:49:48,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327964161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:49:48,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:49:48,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 10:49:48,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056585390] [2022-07-21 10:49:48,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:49:48,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 10:49:48,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:49:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 10:49:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-21 10:49:48,796 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) [2022-07-21 10:49:51,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:49:51,423 INFO L93 Difference]: Finished difference Result 5647 states and 8105 transitions. [2022-07-21 10:49:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 10:49:51,424 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 [2022-07-21 10:49:51,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:49:51,435 INFO L225 Difference]: With dead ends: 5647 [2022-07-21 10:49:51,436 INFO L226 Difference]: Without dead ends: 2839 [2022-07-21 10:49:51,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-21 10:49:51,443 INFO L413 NwaCegarLoop]: 996 mSDtfsCounter, 16 mSDsluCounter, 7928 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 8924 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:49:51,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 8924 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-21 10:49:51,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2839 states. [2022-07-21 10:49:51,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2839 to 2811. [2022-07-21 10:49:51,536 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) [2022-07-21 10:49:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-21 10:49:51,545 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 569 [2022-07-21 10:49:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:49:51,546 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-21 10:49:51,546 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) [2022-07-21 10:49:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-21 10:49:51,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-21 10:49:51,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:49:51,558 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] [2022-07-21 10:49:51,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-07-21 10:49:51,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:49:51,772 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:49:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:49:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1290265901, now seen corresponding path program 2 times [2022-07-21 10:49:51,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:49:51,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639146855] [2022-07-21 10:49:51,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:49:51,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:49:51,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:49:51,779 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) [2022-07-21 10:49:51,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-07-21 10:50:01,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 10:50:01,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:50:02,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 5999 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:50:02,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:50:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 469 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-21 10:50:02,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:50:02,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:50:02,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639146855] [2022-07-21 10:50:02,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639146855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:02,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:02,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:50:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499900408] [2022-07-21 10:50:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:50:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:50:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:50:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:02,725 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) [2022-07-21 10:50:03,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:03,990 INFO L93 Difference]: Finished difference Result 5683 states and 8149 transitions. [2022-07-21 10:50:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:50:03,990 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 [2022-07-21 10:50:03,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:04,002 INFO L225 Difference]: With dead ends: 5683 [2022-07-21 10:50:04,003 INFO L226 Difference]: Without dead ends: 2875 [2022-07-21 10:50:04,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:50:04,011 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 16 mSDsluCounter, 2954 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:04,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3956 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 10:50:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2022-07-21 10:50:04,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2811. [2022-07-21 10:50:04,115 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) [2022-07-21 10:50:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 4025 transitions. [2022-07-21 10:50:04,124 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 4025 transitions. Word has length 575 [2022-07-21 10:50:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:04,125 INFO L495 AbstractCegarLoop]: Abstraction has 2811 states and 4025 transitions. [2022-07-21 10:50:04,125 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) [2022-07-21 10:50:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 4025 transitions. [2022-07-21 10:50:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2022-07-21 10:50:04,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:04,135 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] [2022-07-21 10:50:04,356 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forcibly destroying the process [2022-07-21 10:50:04,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-07-21 10:50:04,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:50:04,369 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:04,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1466773769, now seen corresponding path program 1 times [2022-07-21 10:50:04,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:50:04,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550026158] [2022-07-21 10:50:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:50:04,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:50:04,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:50:04,376 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) [2022-07-21 10:50:04,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-07-21 10:50:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:11,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 6021 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:50:11,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:50:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1463 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 993 trivial. 0 not checked. [2022-07-21 10:50:11,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:50:11,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:50:11,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550026158] [2022-07-21 10:50:11,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550026158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:11,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:11,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 10:50:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642825006] [2022-07-21 10:50:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:50:11,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:50:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:50:11,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 10:50:11,741 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) [2022-07-21 10:50:12,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:12,174 INFO L93 Difference]: Finished difference Result 5747 states and 8261 transitions. [2022-07-21 10:50:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:50:12,175 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 [2022-07-21 10:50:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:12,185 INFO L225 Difference]: With dead ends: 5747 [2022-07-21 10:50:12,186 INFO L226 Difference]: Without dead ends: 2939 [2022-07-21 10:50:12,192 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 [2022-07-21 10:50:12,194 INFO L413 NwaCegarLoop]: 989 mSDtfsCounter, 27 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:12,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1963 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 10:50:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-07-21 10:50:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2819. [2022-07-21 10:50:12,298 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) [2022-07-21 10:50:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2819 states to 2819 states and 4033 transitions. [2022-07-21 10:50:12,307 INFO L78 Accepts]: Start accepts. Automaton has 2819 states and 4033 transitions. Word has length 575 [2022-07-21 10:50:12,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:12,308 INFO L495 AbstractCegarLoop]: Abstraction has 2819 states and 4033 transitions. [2022-07-21 10:50:12,309 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) [2022-07-21 10:50:12,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2819 states and 4033 transitions. [2022-07-21 10:50:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-21 10:50:12,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:12,319 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] [2022-07-21 10:50:12,540 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forcibly destroying the process [2022-07-21 10:50:12,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-07-21 10:50:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:50:12,564 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash -408299781, now seen corresponding path program 1 times [2022-07-21 10:50:12,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:50:12,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250523663] [2022-07-21 10:50:12,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:50:12,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:50:12,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:50:12,572 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) [2022-07-21 10:50:12,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-07-21 10:50:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:50:20,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 6071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:50:20,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:50:20,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 481 proven. 1 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2022-07-21 10:50:20,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 10:50:21,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1420 trivial. 0 not checked. [2022-07-21 10:50:21,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:50:21,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250523663] [2022-07-21 10:50:21,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250523663] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 10:50:21,379 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 10:50:21,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 10:50:21,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284446217] [2022-07-21 10:50:21,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 10:50:21,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:50:21,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:50:21,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:50:21,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:50:21,381 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) [2022-07-21 10:50:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:23,215 INFO L93 Difference]: Finished difference Result 5891 states and 8481 transitions. [2022-07-21 10:50:23,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:50:23,215 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 [2022-07-21 10:50:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:23,223 INFO L225 Difference]: With dead ends: 5891 [2022-07-21 10:50:23,223 INFO L226 Difference]: Without dead ends: 3075 [2022-07-21 10:50:23,228 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 [2022-07-21 10:50:23,228 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 104 mSDsluCounter, 2919 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:23,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 3948 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-21 10:50:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2022-07-21 10:50:23,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 3075. [2022-07-21 10:50:23,398 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) [2022-07-21 10:50:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 4425 transitions. [2022-07-21 10:50:23,407 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 4425 transitions. Word has length 593 [2022-07-21 10:50:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:23,407 INFO L495 AbstractCegarLoop]: Abstraction has 3075 states and 4425 transitions. [2022-07-21 10:50:23,408 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) [2022-07-21 10:50:23,408 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 4425 transitions. [2022-07-21 10:50:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2022-07-21 10:50:23,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:23,419 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] [2022-07-21 10:50:23,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-07-21 10:50:23,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:50:23,639 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:23,639 INFO L85 PathProgramCache]: Analyzing trace with hash 214102459, now seen corresponding path program 2 times [2022-07-21 10:50:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:50:23,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406852068] [2022-07-21 10:50:23,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 10:50:23,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:50:23,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:50:23,644 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) [2022-07-21 10:50:23,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-07-21 10:50:34,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 10:50:34,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:50:35,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 6171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:50:35,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:50:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 834 proven. 0 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2022-07-21 10:50:35,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:50:35,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:50:35,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406852068] [2022-07-21 10:50:35,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406852068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:35,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:35,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:50:35,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189479640] [2022-07-21 10:50:35,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:35,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:50:35,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:50:35,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:50:35,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:35,848 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) [2022-07-21 10:50:36,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:36,762 INFO L93 Difference]: Finished difference Result 6167 states and 8893 transitions. [2022-07-21 10:50:36,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:50:36,763 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 [2022-07-21 10:50:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:36,773 INFO L225 Difference]: With dead ends: 6167 [2022-07-21 10:50:36,773 INFO L226 Difference]: Without dead ends: 3095 [2022-07-21 10:50:36,778 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 [2022-07-21 10:50:36,779 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:50:36,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3917 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-21 10:50:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3095 states. [2022-07-21 10:50:36,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3095 to 3083. [2022-07-21 10:50:36,893 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) [2022-07-21 10:50:36,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4433 transitions. [2022-07-21 10:50:36,902 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4433 transitions. Word has length 629 [2022-07-21 10:50:36,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:36,903 INFO L495 AbstractCegarLoop]: Abstraction has 3083 states and 4433 transitions. [2022-07-21 10:50:36,903 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) [2022-07-21 10:50:36,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4433 transitions. [2022-07-21 10:50:36,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-21 10:50:36,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:36,912 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] [2022-07-21 10:50:37,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-07-21 10:50:37,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:50:37,113 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:37,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 586231223, now seen corresponding path program 3 times [2022-07-21 10:50:37,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:50:37,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797418635] [2022-07-21 10:50:37,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 10:50:37,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:50:37,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:50:37,120 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) [2022-07-21 10:50:37,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-07-21 10:50:44,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-21 10:50:44,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 10:50:44,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 2068 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 10:50:44,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:50:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1887 backedges. 194 proven. 0 refuted. 0 times theorem prover too weak. 1693 trivial. 0 not checked. [2022-07-21 10:50:44,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:50:44,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 10:50:44,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797418635] [2022-07-21 10:50:44,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797418635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:50:44,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:50:44,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 10:50:44,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014009113] [2022-07-21 10:50:44,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:50:44,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 10:50:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 10:50:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 10:50:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:44,813 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) [2022-07-21 10:50:45,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:50:45,206 INFO L93 Difference]: Finished difference Result 6187 states and 9133 transitions. [2022-07-21 10:50:45,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:50:45,207 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 [2022-07-21 10:50:45,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:50:45,217 INFO L225 Difference]: With dead ends: 6187 [2022-07-21 10:50:45,218 INFO L226 Difference]: Without dead ends: 3107 [2022-07-21 10:50:45,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:50:45,232 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 [2022-07-21 10:50:45,232 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] [2022-07-21 10:50:45,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-07-21 10:50:45,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3095. [2022-07-21 10:50:45,335 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) [2022-07-21 10:50:45,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3095 states to 3095 states and 4445 transitions. [2022-07-21 10:50:45,344 INFO L78 Accepts]: Start accepts. Automaton has 3095 states and 4445 transitions. Word has length 687 [2022-07-21 10:50:45,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:50:45,345 INFO L495 AbstractCegarLoop]: Abstraction has 3095 states and 4445 transitions. [2022-07-21 10:50:45,345 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) [2022-07-21 10:50:45,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3095 states and 4445 transitions. [2022-07-21 10:50:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 688 [2022-07-21 10:50:45,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:50:45,357 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] [2022-07-21 10:50:45,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-07-21 10:50:45,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 10:50:45,559 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:50:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:50:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 327773175, now seen corresponding path program 1 times [2022-07-21 10:50:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 10:50:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941851036] [2022-07-21 10:50:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:50:45,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 10:50:45,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 10:50:45,566 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) [2022-07-21 10:50:45,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process