./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.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 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:49:05,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:49:05,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:49:05,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:49:05,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:49:05,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:49:05,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:49:05,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:49:05,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:49:05,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:49:05,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:49:05,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:49:05,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:49:05,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:49:05,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:49:05,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:49:05,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:49:05,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:49:05,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:49:05,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:49:05,933 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:49:05,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:49:05,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:49:05,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:49:05,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:49:05,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:49:05,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:49:05,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:49:05,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:49:05,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:49:05,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:49:05,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:49:05,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:49:05,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:49:05,952 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:49:05,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:49:05,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:49:05,953 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:49:05,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:49:05,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:49:05,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:49:05,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:49:05,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 22:49:05,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:49:05,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:49:05,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:49:05,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:49:05,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:49:05,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:49:05,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:49:05,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:49:05,999 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:49:06,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:49:06,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 22:49:06,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:49:06,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:49:06,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:49:06,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:49:06,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:49:06,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:49:06,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:49:06,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:49:06,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:49:06,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:49:06,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:49:06,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:49:06,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:49:06,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:49:06,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 22:49:06,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 22:49:06,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:49:06,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:49:06,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:49:06,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-19 22:49:06,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:49:06,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:49:06,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:49:06,279 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:49:06,279 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:49:06,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-19 22:49:06,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3e1536e/ba1281e68dd4431caf488d811892689d/FLAGd2c67c1ed [2022-07-19 22:49:06,972 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:49:06,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-19 22:49:07,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3e1536e/ba1281e68dd4431caf488d811892689d/FLAGd2c67c1ed [2022-07-19 22:49:07,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f3e1536e/ba1281e68dd4431caf488d811892689d [2022-07-19 22:49:07,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:49:07,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:49:07,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:49:07,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:49:07,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:49:07,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:49:07" (1/1) ... [2022-07-19 22:49:07,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@394ebe0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:07, skipping insertion in model container [2022-07-19 22:49:07,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:49:07" (1/1) ... [2022-07-19 22:49:07,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:49:07,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:49:08,564 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-19 22:49:08,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:49:08,623 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:49:08,740 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1650) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-19 22:49:08,749 INFO L158 Benchmark]: Toolchain (without parser) took 1360.50ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 73.6MB in the beginning and 86.7MB in the end (delta: -13.1MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-07-19 22:49:08,752 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 22:49:08,754 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1357.55ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 73.6MB in the beginning and 86.7MB in the end (delta: -13.1MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. [2022-07-19 22:49:08,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 104.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1357.55ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 73.6MB in the beginning and 86.7MB in the end (delta: -13.1MB). Peak memory consumption was 45.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.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 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 22:49:10,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 22:49:10,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 22:49:10,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 22:49:10,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 22:49:10,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 22:49:10,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 22:49:10,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 22:49:10,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 22:49:10,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 22:49:10,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 22:49:10,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 22:49:10,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 22:49:10,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 22:49:10,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 22:49:10,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 22:49:10,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 22:49:10,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 22:49:10,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 22:49:10,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 22:49:10,573 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 22:49:10,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 22:49:10,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 22:49:10,576 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 22:49:10,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 22:49:10,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 22:49:10,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 22:49:10,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 22:49:10,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 22:49:10,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 22:49:10,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 22:49:10,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 22:49:10,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 22:49:10,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 22:49:10,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 22:49:10,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 22:49:10,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 22:49:10,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 22:49:10,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 22:49:10,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 22:49:10,595 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 22:49:10,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 22:49:10,603 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-19 22:49:10,634 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 22:49:10,634 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 22:49:10,635 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 22:49:10,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 22:49:10,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 22:49:10,636 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 22:49:10,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 22:49:10,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 22:49:10,637 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 22:49:10,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 22:49:10,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 22:49:10,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 22:49:10,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 22:49:10,639 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 22:49:10,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 22:49:10,645 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 22:49:10,645 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 22:49:10,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 22:49:10,645 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 22:49:10,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 22:49:10,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:49:10,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 22:49:10,646 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 22:49:10,647 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 22:49:10,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 22:49:10,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 22:49:10,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 22:49:10,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62cb578dfe3af17ed98c8454048d798a874692901bcf05dac12a80fa481c23e6 [2022-07-19 22:49:10,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 22:49:10,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 22:49:10,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 22:49:10,972 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 22:49:10,973 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 22:49:10,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-19 22:49:11,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d179b9/74bc4dd45edd4d2a8408fc9956b4c595/FLAGf04ac5085 [2022-07-19 22:49:11,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 22:49:11,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-19 22:49:11,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d179b9/74bc4dd45edd4d2a8408fc9956b4c595/FLAGf04ac5085 [2022-07-19 22:49:11,874 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/368d179b9/74bc4dd45edd4d2a8408fc9956b4c595 [2022-07-19 22:49:11,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 22:49:11,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 22:49:11,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 22:49:11,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 22:49:11,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 22:49:11,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:49:11" (1/1) ... [2022-07-19 22:49:11,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d32c2c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:11, skipping insertion in model container [2022-07-19 22:49:11,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 10:49:11" (1/1) ... [2022-07-19 22:49:11,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 22:49:11,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:49:13,002 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-19 22:49:13,029 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:49:13,055 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-19 22:49:13,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 22:49:13,334 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-19 22:49:13,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:49:13,360 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 22:49:13,646 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-commit-tester/m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i[176586,176599] [2022-07-19 22:49:13,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 22:49:13,713 INFO L208 MainTranslator]: Completed translation [2022-07-19 22:49:13,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13 WrapperNode [2022-07-19 22:49:13,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 22:49:13,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 22:49:13,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 22:49:13,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 22:49:13,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:13,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:13,918 INFO L137 Inliner]: procedures = 195, calls = 1464, calls flagged for inlining = 91, calls inlined = 88, statements flattened = 4028 [2022-07-19 22:49:13,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 22:49:13,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 22:49:13,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 22:49:13,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 22:49:13,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:13,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:13,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:13,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:14,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:14,079 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:14,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:14,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 22:49:14,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 22:49:14,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 22:49:14,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 22:49:14,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (1/1) ... [2022-07-19 22:49:14,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 22:49:14,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:49:14,156 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 22:49:14,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 22:49:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_sw [2022-07-19 22:49:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_sw [2022-07-19 22:49:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-19 22:49:14,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-19 22:49:14,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-19 22:49:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_recsrc2 [2022-07-19 22:49:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_recsrc2 [2022-07-19 22:49:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-19 22:49:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-19 22:49:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2022-07-19 22:49:14,206 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2022-07-19 22:49:14,206 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_input [2022-07-19 22:49:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_input [2022-07-19 22:49:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-19 22:49:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-19 22:49:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2022-07-19 22:49:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-19 22:49:14,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-19 22:49:14,207 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_get_volume1_vol [2022-07-19 22:49:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_get_volume1_vol [2022-07-19 22:49:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-19 22:49:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-19 22:49:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv2 [2022-07-19 22:49:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv2 [2022-07-19 22:49:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv1 [2022-07-19 22:49:14,208 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv1 [2022-07-19 22:49:14,208 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_held [2022-07-19 22:49:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_held [2022-07-19 22:49:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-07-19 22:49:14,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-07-19 22:49:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 22:49:14,209 INFO L130 BoogieDeclarations]: Found specification of procedure mixer_slot_clear [2022-07-19 22:49:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure mixer_slot_clear [2022-07-19 22:49:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_ioctl1 [2022-07-19 22:49:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_ioctl1 [2022-07-19 22:49:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure down_read [2022-07-19 22:49:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure down_read [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-07-19 22:49:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-19 22:49:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_up_read_controls_rwsem_of_snd_card [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-19 22:49:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-19 22:49:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 22:49:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-19 22:49:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 22:49:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_build_test [2022-07-19 22:49:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_build_test [2022-07-19 22:49:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-07-19 22:49:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-07-19 22:49:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-19 22:49:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-19 22:49:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 22:49:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-19 22:49:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-19 22:49:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-19 22:49:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-19 22:49:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_open [2022-07-19 22:49:14,215 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_open [2022-07-19 22:49:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-19 22:49:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-19 22:49:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure snd_card_file_remove [2022-07-19 22:49:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_card_file_remove [2022-07-19 22:49:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_find_numid [2022-07-19 22:49:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_find_numid [2022-07-19 22:49:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_conv [2022-07-19 22:49:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_conv [2022-07-19 22:49:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-19 22:49:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-19 22:49:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_test_id [2022-07-19 22:49:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_test_id [2022-07-19 22:49:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2022-07-19 22:49:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2022-07-19 22:49:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-19 22:49:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure snd_info_free_entry [2022-07-19 22:49:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_info_free_entry [2022-07-19 22:49:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-19 22:49:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-19 22:49:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-19 22:49:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-19 22:49:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-19 22:49:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-19 22:49:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_release [2022-07-19 22:49:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_release [2022-07-19 22:49:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 22:49:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-07-19 22:49:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure up_read [2022-07-19 22:49:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure up_read [2022-07-19 22:49:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 22:49:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 22:49:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-19 22:49:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure snd_ctl_notify [2022-07-19 22:49:14,221 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_ctl_notify [2022-07-19 22:49:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 22:49:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-19 22:49:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-19 22:49:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_down_read_controls_rwsem_of_snd_card [2022-07-19 22:49:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-07-19 22:49:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-07-19 22:49:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_sw [2022-07-19 22:49:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_sw [2022-07-19 22:49:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure snd_oss_info_register [2022-07-19 22:49:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_oss_info_register [2022-07-19 22:49:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_put_volume1_vol [2022-07-19 22:49:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_put_volume1_vol [2022-07-19 22:49:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure snd_mixer_oss_notify_handler [2022-07-19 22:49:14,223 INFO L138 BoogieDeclarations]: Found implementation of procedure snd_mixer_oss_notify_handler [2022-07-19 22:49:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_rcu_dereference [2022-07-19 22:49:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_rcu_dereference [2022-07-19 22:49:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 22:49:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 22:49:14,791 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 22:49:14,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 22:49:40,701 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 22:49:40,725 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 22:49:40,726 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 22:49:40,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:49:40 BoogieIcfgContainer [2022-07-19 22:49:40,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 22:49:40,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 22:49:40,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 22:49:40,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 22:49:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 10:49:11" (1/3) ... [2022-07-19 22:49:40,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d32de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:49:40, skipping insertion in model container [2022-07-19 22:49:40,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 10:49:13" (2/3) ... [2022-07-19 22:49:40,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d32de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 10:49:40, skipping insertion in model container [2022-07-19 22:49:40,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 10:49:40" (3/3) ... [2022-07-19 22:49:40,744 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_sound-core-oss-snd-mixer-oss-ko--143_7a--506218e.i [2022-07-19 22:49:40,756 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 22:49:40,756 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 22:49:40,845 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 22:49:40,851 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@520a4af3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@611ec136 [2022-07-19 22:49:40,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 22:49:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 1191 states, 889 states have (on average 1.4668166479190101) internal successors, (1304), 906 states have internal predecessors, (1304), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) [2022-07-19 22:49:40,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-19 22:49:40,867 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:40,868 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:49:40,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:40,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:40,874 INFO L85 PathProgramCache]: Analyzing trace with hash 910515778, now seen corresponding path program 1 times [2022-07-19 22:49:40,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:40,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311804711] [2022-07-19 22:49:40,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:49:40,888 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:40,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:40,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:40,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 22:49:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:49:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 22:49:41,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:49:41,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:49:41,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:41,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311804711] [2022-07-19 22:49:41,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311804711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:49:41,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:49:41,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:49:41,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623253544] [2022-07-19 22:49:41,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:49:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:49:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:41,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:49:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:49:41,524 INFO L87 Difference]: Start difference. First operand has 1191 states, 889 states have (on average 1.4668166479190101) internal successors, (1304), 906 states have internal predecessors, (1304), 254 states have call successors, (254), 46 states have call predecessors, (254), 46 states have return successors, (254), 254 states have call predecessors, (254), 254 states have call successors, (254) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:41,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:49:41,817 INFO L93 Difference]: Finished difference Result 2322 states and 3654 transitions. [2022-07-19 22:49:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:49:41,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-19 22:49:41,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:49:41,838 INFO L225 Difference]: With dead ends: 2322 [2022-07-19 22:49:41,839 INFO L226 Difference]: Without dead ends: 1132 [2022-07-19 22:49:41,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:49:41,857 INFO L413 NwaCegarLoop]: 1702 mSDtfsCounter, 5 mSDsluCounter, 1699 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3401 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:49:41,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3401 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:49:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2022-07-19 22:49:41,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1127. [2022-07-19 22:49:41,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 836 states have (on average 1.450956937799043) internal successors, (1213), 849 states have internal predecessors, (1213), 246 states have call successors, (246), 45 states have call predecessors, (246), 44 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-19 22:49:41,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1702 transitions. [2022-07-19 22:49:41,960 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1702 transitions. Word has length 14 [2022-07-19 22:49:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:49:41,961 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1702 transitions. [2022-07-19 22:49:41,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:41,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1702 transitions. [2022-07-19 22:49:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-19 22:49:41,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:41,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:49:41,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 22:49:42,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:49:42,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:42,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:42,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1958805779, now seen corresponding path program 1 times [2022-07-19 22:49:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:42,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615141457] [2022-07-19 22:49:42,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:49:42,179 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:42,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:42,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:42,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-19 22:49:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:49:42,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:49:42,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:49:42,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:49:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:49:43,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:43,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615141457] [2022-07-19 22:49:43,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615141457] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:49:43,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:49:43,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 22:49:43,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011504845] [2022-07-19 22:49:43,241 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:49:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:49:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:49:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:49:43,243 INFO L87 Difference]: Start difference. First operand 1127 states and 1702 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:43,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:49:43,854 INFO L93 Difference]: Finished difference Result 2260 states and 3415 transitions. [2022-07-19 22:49:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:49:43,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-19 22:49:43,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:49:43,866 INFO L225 Difference]: With dead ends: 2260 [2022-07-19 22:49:43,866 INFO L226 Difference]: Without dead ends: 1145 [2022-07-19 22:49:43,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:49:43,874 INFO L413 NwaCegarLoop]: 1703 mSDtfsCounter, 29 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:49:43,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5096 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:49:43,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-19 22:49:43,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-19 22:49:43,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 851 states have (on average 1.4465334900117508) internal successors, (1231), 864 states have internal predecessors, (1231), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-07-19 22:49:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1726 transitions. [2022-07-19 22:49:43,932 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1726 transitions. Word has length 18 [2022-07-19 22:49:43,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:49:43,932 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1726 transitions. [2022-07-19 22:49:43,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:43,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1726 transitions. [2022-07-19 22:49:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 22:49:43,939 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:43,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:49:43,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-19 22:49:44,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:49:44,156 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:44,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:44,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1947136018, now seen corresponding path program 2 times [2022-07-19 22:49:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:44,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130426537] [2022-07-19 22:49:44,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:49:44,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:44,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:44,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-19 22:49:44,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 22:49:44,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:49:44,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:49:44,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 22:49:44,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:49:44,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:44,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130426537] [2022-07-19 22:49:44,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130426537] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:49:44,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:49:44,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 22:49:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547291194] [2022-07-19 22:49:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:49:44,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:49:44,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:44,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:49:44,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 22:49:44,717 INFO L87 Difference]: Start difference. First operand 1145 states and 1726 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:44,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:49:44,921 INFO L93 Difference]: Finished difference Result 1150 states and 1730 transitions. [2022-07-19 22:49:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 22:49:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2022-07-19 22:49:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:49:44,928 INFO L225 Difference]: With dead ends: 1150 [2022-07-19 22:49:44,928 INFO L226 Difference]: Without dead ends: 1145 [2022-07-19 22:49:44,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:49:44,930 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 75 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 5003 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:49:44,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 5003 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:49:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2022-07-19 22:49:44,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1145. [2022-07-19 22:49:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 851 states have (on average 1.445358401880141) internal successors, (1230), 864 states have internal predecessors, (1230), 249 states have call successors, (249), 45 states have call predecessors, (249), 44 states have return successors, (246), 246 states have call predecessors, (246), 246 states have call successors, (246) [2022-07-19 22:49:44,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1725 transitions. [2022-07-19 22:49:44,963 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1725 transitions. Word has length 30 [2022-07-19 22:49:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:49:44,964 INFO L495 AbstractCegarLoop]: Abstraction has 1145 states and 1725 transitions. [2022-07-19 22:49:44,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-19 22:49:44,964 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1725 transitions. [2022-07-19 22:49:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-19 22:49:44,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:44,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:49:44,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-19 22:49:45,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:49:45,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -280593772, now seen corresponding path program 1 times [2022-07-19 22:49:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:45,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089344253] [2022-07-19 22:49:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:49:45,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:45,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:45,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:45,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-19 22:49:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:49:45,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:49:45,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 22:49:46,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:49:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 22:49:47,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089344253] [2022-07-19 22:49:47,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089344253] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:49:47,640 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:49:47,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 22:49:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090876772] [2022-07-19 22:49:47,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:49:47,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 22:49:47,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 22:49:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:49:47,642 INFO L87 Difference]: Start difference. First operand 1145 states and 1725 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 22:49:50,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:49:50,801 INFO L93 Difference]: Finished difference Result 2296 states and 3464 transitions. [2022-07-19 22:49:50,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:49:50,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-07-19 22:49:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:49:50,809 INFO L225 Difference]: With dead ends: 2296 [2022-07-19 22:49:50,810 INFO L226 Difference]: Without dead ends: 1181 [2022-07-19 22:49:50,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:49:50,815 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 92 mSDsluCounter, 8526 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10243 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:49:50,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10243 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 22:49:50,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-07-19 22:49:50,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 1181. [2022-07-19 22:49:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 881 states have (on average 1.4370034052213394) internal successors, (1266), 894 states have internal predecessors, (1266), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-07-19 22:49:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1773 transitions. [2022-07-19 22:49:50,849 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1773 transitions. Word has length 38 [2022-07-19 22:49:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:49:50,849 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1773 transitions. [2022-07-19 22:49:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 22:49:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1773 transitions. [2022-07-19 22:49:50,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-19 22:49:50,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:50,852 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:49:50,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-19 22:49:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:49:51,066 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:51,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1417493872, now seen corresponding path program 1 times [2022-07-19 22:49:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1781166984] [2022-07-19 22:49:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:49:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:51,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:51,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-19 22:49:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:49:52,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-19 22:49:52,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:53,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 22:49:53,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:49:53,150 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:53,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1781166984] [2022-07-19 22:49:53,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1781166984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:49:53,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:49:53,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:49:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005906055] [2022-07-19 22:49:53,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:49:53,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:49:53,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:53,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:49:53,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:49:53,152 INFO L87 Difference]: Start difference. First operand 1181 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 22:49:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:49:53,293 INFO L93 Difference]: Finished difference Result 2355 states and 3557 transitions. [2022-07-19 22:49:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:49:53,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-07-19 22:49:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:49:53,312 INFO L225 Difference]: With dead ends: 2355 [2022-07-19 22:49:53,312 INFO L226 Difference]: Without dead ends: 1183 [2022-07-19 22:49:53,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:49:53,318 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 38 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:49:53,319 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 3355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:49:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1183 states. [2022-07-19 22:49:53,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1183 to 1181. [2022-07-19 22:49:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 881 states have (on average 1.4358683314415437) internal successors, (1265), 894 states have internal predecessors, (1265), 255 states have call successors, (255), 45 states have call predecessors, (255), 44 states have return successors, (252), 252 states have call predecessors, (252), 252 states have call successors, (252) [2022-07-19 22:49:53,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1772 transitions. [2022-07-19 22:49:53,353 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1772 transitions. Word has length 55 [2022-07-19 22:49:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:49:53,354 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1772 transitions. [2022-07-19 22:49:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-19 22:49:53,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1772 transitions. [2022-07-19 22:49:53,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 22:49:53,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:49:53,356 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:49:53,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-19 22:49:53,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:49:53,584 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:49:53,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:49:53,584 INFO L85 PathProgramCache]: Analyzing trace with hash -967271630, now seen corresponding path program 1 times [2022-07-19 22:49:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:49:53,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249469244] [2022-07-19 22:49:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:49:53,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:49:53,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:49:53,587 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:49:53,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-19 22:49:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:49:55,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2361 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 22:49:55,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:49:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 22:49:56,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:49:56,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:49:56,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249469244] [2022-07-19 22:49:56,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249469244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:49:56,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:49:56,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:49:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297135716] [2022-07-19 22:49:56,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:49:56,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:49:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:49:56,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:49:56,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:49:56,854 INFO L87 Difference]: Start difference. First operand 1181 states and 1772 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:49:59,990 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 [] [2022-07-19 22:50:01,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:50:01,080 INFO L93 Difference]: Finished difference Result 2363 states and 3569 transitions. [2022-07-19 22:50:01,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:50:01,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 22:50:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:50:01,088 INFO L225 Difference]: With dead ends: 2363 [2022-07-19 22:50:01,088 INFO L226 Difference]: Without dead ends: 1191 [2022-07-19 22:50:01,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:50:01,095 INFO L413 NwaCegarLoop]: 1698 mSDtfsCounter, 5 mSDsluCounter, 10158 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11856 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:50:01,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11856 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 22:50:01,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-19 22:50:01,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1189. [2022-07-19 22:50:01,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 887 states have (on average 1.4329199549041713) internal successors, (1271), 900 states have internal predecessors, (1271), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-19 22:50:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1785 transitions. [2022-07-19 22:50:01,128 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1785 transitions. Word has length 70 [2022-07-19 22:50:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:50:01,128 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1785 transitions. [2022-07-19 22:50:01,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:50:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1785 transitions. [2022-07-19 22:50:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 22:50:01,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:50:01,131 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 22:50:01,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-19 22:50:01,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:50:01,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:50:01,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:50:01,352 INFO L85 PathProgramCache]: Analyzing trace with hash 857270872, now seen corresponding path program 1 times [2022-07-19 22:50:01,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:50:01,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510365212] [2022-07-19 22:50:01,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:50:01,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:50:01,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:50:01,358 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:50:01,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-19 22:50:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:50:03,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2378 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 22:50:03,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:50:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 22:50:03,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:50:03,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:50:03,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510365212] [2022-07-19 22:50:03,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510365212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:50:03,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:50:03,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:50:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446650619] [2022-07-19 22:50:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:50:03,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:50:03,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:50:03,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:50:03,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:50:03,915 INFO L87 Difference]: Start difference. First operand 1189 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:50:06,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:50:06,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:50:06,995 INFO L93 Difference]: Finished difference Result 2371 states and 3572 transitions. [2022-07-19 22:50:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:50:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-19 22:50:08,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:50:08,026 INFO L225 Difference]: With dead ends: 2371 [2022-07-19 22:50:08,026 INFO L226 Difference]: Without dead ends: 1191 [2022-07-19 22:50:08,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:50:08,034 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 1 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3391 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:50:08,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3391 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 22:50:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-07-19 22:50:08,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1190. [2022-07-19 22:50:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 888 states have (on average 1.4324324324324325) internal successors, (1272), 901 states have internal predecessors, (1272), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-19 22:50:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1786 transitions. [2022-07-19 22:50:08,082 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1786 transitions. Word has length 73 [2022-07-19 22:50:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:50:08,082 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1786 transitions. [2022-07-19 22:50:08,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 22:50:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1786 transitions. [2022-07-19 22:50:08,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 22:50:08,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:50:08,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 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] [2022-07-19 22:50:08,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-19 22:50:08,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:50:08,296 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:50:08,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:50:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1872160802, now seen corresponding path program 1 times [2022-07-19 22:50:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:50:08,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049490189] [2022-07-19 22:50:08,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:50:08,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:50:08,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:50:08,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:50:08,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-19 22:50:10,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:50:10,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2408 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:50:10,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:50:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:50:11,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:50:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:50:12,056 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:50:12,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049490189] [2022-07-19 22:50:12,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049490189] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:50:12,056 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:50:12,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-19 22:50:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23374705] [2022-07-19 22:50:12,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:50:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:50:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:50:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:50:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:50:12,058 INFO L87 Difference]: Start difference. First operand 1190 states and 1786 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 22:50:15,439 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:50:18,269 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:50:18,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:50:18,315 INFO L93 Difference]: Finished difference Result 2377 states and 3580 transitions. [2022-07-19 22:50:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:50:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2022-07-19 22:50:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:50:19,351 INFO L225 Difference]: With dead ends: 2377 [2022-07-19 22:50:19,351 INFO L226 Difference]: Without dead ends: 1196 [2022-07-19 22:50:19,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:50:19,358 INFO L413 NwaCegarLoop]: 1697 mSDtfsCounter, 4 mSDsluCounter, 6776 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8473 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:50:19,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8473 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 22:50:19,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-07-19 22:50:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2022-07-19 22:50:19,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 894 states have (on average 1.429530201342282) internal successors, (1278), 907 states have internal predecessors, (1278), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-19 22:50:19,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1792 transitions. [2022-07-19 22:50:19,392 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1792 transitions. Word has length 83 [2022-07-19 22:50:19,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:50:19,393 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1792 transitions. [2022-07-19 22:50:19,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 22:50:19,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1792 transitions. [2022-07-19 22:50:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-19 22:50:19,395 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:50:19,395 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:50:19,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-07-19 22:50:19,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:50:19,601 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:50:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:50:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1642384918, now seen corresponding path program 2 times [2022-07-19 22:50:19,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:50:19,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8508878] [2022-07-19 22:50:19,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:50:19,602 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:50:19,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:50:19,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:50:19,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-19 22:50:20,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 22:50:20,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:50:20,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 22:50:20,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:50:20,451 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-07-19 22:50:20,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:50:20,452 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:50:20,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8508878] [2022-07-19 22:50:20,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8508878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:50:20,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:50:20,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:50:20,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398269963] [2022-07-19 22:50:20,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:50:20,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:50:20,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:50:20,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:50:20,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:50:20,453 INFO L87 Difference]: Start difference. First operand 1196 states and 1792 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 22:50:20,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:50:20,985 INFO L93 Difference]: Finished difference Result 1208 states and 1806 transitions. [2022-07-19 22:50:20,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:50:20,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2022-07-19 22:50:20,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:50:20,996 INFO L225 Difference]: With dead ends: 1208 [2022-07-19 22:50:20,996 INFO L226 Difference]: Without dead ends: 1202 [2022-07-19 22:50:20,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:50:20,999 INFO L413 NwaCegarLoop]: 1696 mSDtfsCounter, 5 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3389 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:50:20,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3389 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:50:21,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2022-07-19 22:50:21,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1197. [2022-07-19 22:50:21,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 895 states have (on average 1.429050279329609) internal successors, (1279), 908 states have internal predecessors, (1279), 255 states have call successors, (255), 45 states have call predecessors, (255), 46 states have return successors, (259), 254 states have call predecessors, (259), 252 states have call successors, (259) [2022-07-19 22:50:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1793 transitions. [2022-07-19 22:50:21,035 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1793 transitions. Word has length 62 [2022-07-19 22:50:21,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:50:21,035 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1793 transitions. [2022-07-19 22:50:21,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-19 22:50:21,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1793 transitions. [2022-07-19 22:50:21,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 22:50:21,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:50:21,037 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 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] [2022-07-19 22:50:21,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-19 22:50:21,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:50:21,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:50:21,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:50:21,253 INFO L85 PathProgramCache]: Analyzing trace with hash 765241419, now seen corresponding path program 1 times [2022-07-19 22:50:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:50:21,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393445504] [2022-07-19 22:50:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:50:21,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:50:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:50:21,256 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:50:21,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-19 22:50:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:50:21,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 22:50:21,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:50:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 2 proven. 190 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 22:50:33,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:50:51,346 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 22:50:51,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:50:51,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393445504] [2022-07-19 22:50:51,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393445504] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:50:51,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:50:51,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-19 22:50:51,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885911788] [2022-07-19 22:50:51,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:50:51,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 22:50:51,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:50:51,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 22:50:51,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:50:51,349 INFO L87 Difference]: Start difference. First operand 1197 states and 1793 transitions. Second operand has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 22:51:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:51:41,106 INFO L93 Difference]: Finished difference Result 2400 states and 3606 transitions. [2022-07-19 22:51:41,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 22:51:41,108 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2022-07-19 22:51:41,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:51:41,115 INFO L225 Difference]: With dead ends: 2400 [2022-07-19 22:51:41,116 INFO L226 Difference]: Without dead ends: 1269 [2022-07-19 22:51:41,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 22:51:41,120 INFO L413 NwaCegarLoop]: 1746 mSDtfsCounter, 235 mSDsluCounter, 18951 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 20697 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:51:41,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 20697 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 35.7s Time] [2022-07-19 22:51:41,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2022-07-19 22:51:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1269. [2022-07-19 22:51:41,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 955 states have (on average 1.4146596858638742) internal successors, (1351), 968 states have internal predecessors, (1351), 267 states have call successors, (267), 45 states have call predecessors, (267), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-19 22:51:41,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1889 transitions. [2022-07-19 22:51:41,161 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1889 transitions. Word has length 66 [2022-07-19 22:51:41,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:51:41,161 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1889 transitions. [2022-07-19 22:51:41,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.291666666666667) internal successors, (103), 24 states have internal predecessors, (103), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 22:51:41,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1889 transitions. [2022-07-19 22:51:41,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-19 22:51:41,173 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:51:41,173 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-19 22:51:41,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-19 22:51:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:51:41,382 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:51:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:51:41,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1186470200, now seen corresponding path program 2 times [2022-07-19 22:51:41,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:51:41,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065924364] [2022-07-19 22:51:41,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:51:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:51:41,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:51:41,386 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:51:41,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-19 22:51:43,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 22:51:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:51:43,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 2356 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 22:51:43,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:51:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 22:51:50,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:51:50,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:51:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065924364] [2022-07-19 22:51:50,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065924364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:51:50,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:51:50,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 22:51:50,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592355642] [2022-07-19 22:51:50,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:51:50,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 22:51:50,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:51:50,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 22:51:50,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:51:50,923 INFO L87 Difference]: Start difference. First operand 1269 states and 1889 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 22:51:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:51:51,146 INFO L93 Difference]: Finished difference Result 1271 states and 1890 transitions. [2022-07-19 22:51:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 22:51:51,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 81 [2022-07-19 22:51:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:51:51,154 INFO L225 Difference]: With dead ends: 1271 [2022-07-19 22:51:51,154 INFO L226 Difference]: Without dead ends: 1268 [2022-07-19 22:51:51,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 22:51:51,155 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 1630 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:51:51,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 1695 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 22:51:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2022-07-19 22:51:51,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1268. [2022-07-19 22:51:51,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 955 states have (on average 1.4136125654450262) internal successors, (1350), 967 states have internal predecessors, (1350), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-19 22:51:51,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1887 transitions. [2022-07-19 22:51:51,191 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1887 transitions. Word has length 81 [2022-07-19 22:51:51,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:51:51,192 INFO L495 AbstractCegarLoop]: Abstraction has 1268 states and 1887 transitions. [2022-07-19 22:51:51,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-19 22:51:51,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1887 transitions. [2022-07-19 22:51:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 22:51:51,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:51:51,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-19 22:51:51,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-19 22:51:51,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:51:51,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:51:51,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:51:51,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1973741030, now seen corresponding path program 1 times [2022-07-19 22:51:51,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:51:51,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223230352] [2022-07-19 22:51:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:51:51,418 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:51:51,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:51:51,419 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:51:51,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-19 22:51:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:51:53,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2618 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:51:53,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:51:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:51:56,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:52:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 22:52:00,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:52:00,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [223230352] [2022-07-19 22:52:00,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [223230352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:52:00,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:52:00,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-19 22:52:00,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305150872] [2022-07-19 22:52:00,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:52:00,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 22:52:00,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:52:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 22:52:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:52:00,801 INFO L87 Difference]: Start difference. First operand 1268 states and 1887 transitions. Second operand has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:52:10,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:52:13,426 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:52:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:52:13,483 INFO L93 Difference]: Finished difference Result 2539 states and 3803 transitions. [2022-07-19 22:52:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:52:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 114 [2022-07-19 22:52:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:52:14,323 INFO L225 Difference]: With dead ends: 2539 [2022-07-19 22:52:14,323 INFO L226 Difference]: Without dead ends: 1280 [2022-07-19 22:52:14,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:52:14,331 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 10 mSDsluCounter, 10152 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 11847 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:52:14,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 11847 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2022-07-19 22:52:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-07-19 22:52:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1280. [2022-07-19 22:52:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 967 states have (on average 1.408479834539814) internal successors, (1362), 979 states have internal predecessors, (1362), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-19 22:52:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1899 transitions. [2022-07-19 22:52:14,373 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1899 transitions. Word has length 114 [2022-07-19 22:52:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:52:14,374 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1899 transitions. [2022-07-19 22:52:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.916666666666666) internal successors, (107), 12 states have internal predecessors, (107), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:52:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1899 transitions. [2022-07-19 22:52:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 22:52:14,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:52:14,379 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 3, 3, 3, 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] [2022-07-19 22:52:14,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-07-19 22:52:14,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:52:14,596 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:52:14,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:52:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1821949198, now seen corresponding path program 2 times [2022-07-19 22:52:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:52:14,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782876654] [2022-07-19 22:52:14,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:52:14,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:52:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:52:14,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:52:14,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-19 22:52:23,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:52:23,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:52:24,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 22:52:24,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:52:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 22:52:34,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:52:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 22:52:51,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 22:52:51,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782876654] [2022-07-19 22:52:51,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782876654] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:52:51,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:52:51,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-07-19 22:52:51,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311134972] [2022-07-19 22:52:51,596 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:52:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 22:52:51,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 22:52:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 22:52:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:52:51,598 INFO L87 Difference]: Start difference. First operand 1280 states and 1899 transitions. Second operand has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:53:25,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 22:53:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:53:25,335 INFO L93 Difference]: Finished difference Result 2575 states and 3845 transitions. [2022-07-19 22:53:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 22:53:26,260 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2022-07-19 22:53:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:53:26,268 INFO L225 Difference]: With dead ends: 2575 [2022-07-19 22:53:26,269 INFO L226 Difference]: Without dead ends: 1304 [2022-07-19 22:53:26,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 22:53:26,277 INFO L413 NwaCegarLoop]: 1695 mSDtfsCounter, 23 mSDsluCounter, 18612 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20307 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:53:26,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20307 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 18.3s Time] [2022-07-19 22:53:26,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1304 states. [2022-07-19 22:53:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1304 to 1304. [2022-07-19 22:53:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 991 states have (on average 1.3985872855701311) internal successors, (1386), 1003 states have internal predecessors, (1386), 266 states have call successors, (266), 45 states have call predecessors, (266), 46 states have return successors, (271), 266 states have call predecessors, (271), 264 states have call successors, (271) [2022-07-19 22:53:26,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1923 transitions. [2022-07-19 22:53:26,341 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1923 transitions. Word has length 126 [2022-07-19 22:53:26,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:53:26,341 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1923 transitions. [2022-07-19 22:53:26,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.458333333333333) internal successors, (131), 24 states have internal predecessors, (131), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-19 22:53:26,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1923 transitions. [2022-07-19 22:53:26,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 22:53:26,350 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:53:26,351 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 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] [2022-07-19 22:53:26,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:53:26,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 22:53:26,560 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:53:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:53:26,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1205566287, now seen corresponding path program 2 times [2022-07-19 22:53:26,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 22:53:26,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664218155] [2022-07-19 22:53:26,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:53:26,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 22:53:26,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 22:53:26,564 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 22:53:26,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-19 22:53:27,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 22:53:27,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:53:27,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:53:27,320 INFO L286 TraceCheckSpWp]: Computing forward predicates...