./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0883.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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/float-newlib/double_req_bl_0883.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:42:05,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:42:05,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:42:05,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:42:05,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:42:05,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:42:05,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:42:05,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:42:05,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:42:05,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:42:05,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:42:05,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:42:05,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:42:05,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:42:05,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:42:05,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:42:05,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:42:05,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:42:05,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:42:05,233 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:42:05,234 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:42:05,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:42:05,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:42:05,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:42:05,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:42:05,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:42:05,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:42:05,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:42:05,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:42:05,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:42:05,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:42:05,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:42:05,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:42:05,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:42:05,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:42:05,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:42:05,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:42:05,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:42:05,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:42:05,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:42:05,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:42:05,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:42:05,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:42:05,273 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:42:05,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:42:05,277 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:42:05,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:42:05,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:42:05,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:42:05,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:42:05,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:42:05,279 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:42:05,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:42:05,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:42:05,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:42:05,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:42:05,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:42:05,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:42:05,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:42:05,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:42:05,282 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:42:05,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:42:05,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:42:05,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:42:05,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:42:05,283 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:42:05,283 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:42:05,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:42:05,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:42:05,284 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:42:05,284 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:42:05,284 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:42:05,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:42:05,285 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:42:05,285 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:42:05,285 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:42:05,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-07-13 14:42:05,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:42:05,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:42:05,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:42:05,490 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:42:05,490 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:42:05,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-07-13 14:42:05,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e0fe20c/079ab6aea15f497684ea3860e5f65516/FLAG57aae002a [2022-07-13 14:42:06,050 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:42:06,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-07-13 14:42:06,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e0fe20c/079ab6aea15f497684ea3860e5f65516/FLAG57aae002a [2022-07-13 14:42:06,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69e0fe20c/079ab6aea15f497684ea3860e5f65516 [2022-07-13 14:42:06,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:42:06,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:42:06,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:42:06,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:42:06,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:42:06,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:42:06" (1/1) ... [2022-07-13 14:42:06,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a600313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:06, skipping insertion in model container [2022-07-13 14:42:06,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:42:06" (1/1) ... [2022-07-13 14:42:06,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:42:06,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:42:06,808 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:837) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.handleNaNOrInfinity(StandardFunctionHandler.java:1784) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.lambda$49(StandardFunctionHandler.java:414) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.standardfunctions.StandardFunctionHandler.translateStandardFunction(StandardFunctionHandler.java:235) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1447) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleReturnStatement(FunctionHandler.java:540) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2039) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:193) 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.PRDispatcher.dispatch(PRDispatcher.java:229) 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.PRDispatcher.dispatch(PRDispatcher.java:232) 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.PRDispatcher.dispatch(PRDispatcher.java:229) 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.PRDispatcher.dispatch(PRDispatcher.java:232) 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.PRDispatcher.dispatch(PRDispatcher.java:155) 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.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) 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) [2022-07-13 14:42:06,813 INFO L158 Benchmark]: Toolchain (without parser) took 254.86ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 53.9MB in the beginning and 85.5MB in the end (delta: -31.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:42:06,814 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:42:06,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.09ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 53.7MB in the beginning and 85.5MB in the end (delta: -31.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:42:06,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 88.1MB. Free memory was 44.8MB in the beginning and 44.7MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.09ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 53.7MB in the beginning and 85.5MB in the end (delta: -31.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: UnsupportedOperationException: createNanOrInfinity is unsupported in non-bitprecise translation: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.createNanOrInfinity(IntegerTranslation.java:837) 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/float-newlib/double_req_bl_0883.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 32bit --witnessprinter.graph.data.programhash 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:42:08,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:42:08,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:42:08,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:42:08,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:42:08,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:42:08,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:42:08,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:42:08,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:42:08,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:42:08,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:42:08,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:42:08,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:42:08,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:42:08,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:42:08,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:42:08,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:42:08,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:42:08,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:42:08,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:42:08,559 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:42:08,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:42:08,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:42:08,562 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:42:08,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:42:08,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:42:08,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:42:08,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:42:08,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:42:08,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:42:08,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:42:08,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:42:08,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:42:08,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:42:08,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:42:08,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:42:08,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:42:08,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:42:08,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:42:08,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:42:08,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:42:08,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:42:08,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:42:08,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:42:08,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:42:08,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:42:08,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:42:08,623 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:42:08,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:42:08,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:42:08,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:42:08,624 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:42:08,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:42:08,625 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:42:08,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:42:08,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:42:08,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:42:08,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:42:08,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:42:08,626 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:42:08,626 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:42:08,626 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:42:08,627 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:42:08,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:42:08,627 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:42:08,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:42:08,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:42:08,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:42:08,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:42:08,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:42:08,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:42:08,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:42:08,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:42:08,629 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:42:08,629 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:42:08,629 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:42:08,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:42:08,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:42:08,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:42:08,630 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 06b4b1323d8f9b464c0feec2390cbe4b016fc9fcf8f855908ee9b31b1449e1d6 [2022-07-13 14:42:08,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:42:08,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:42:08,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:42:08,985 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:42:08,985 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:42:08,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-07-13 14:42:09,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9455a293c/66ba1d906b7d4aec801b1c9ef566c8a2/FLAG1e59e806d [2022-07-13 14:42:09,529 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:42:09,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0883.c [2022-07-13 14:42:09,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9455a293c/66ba1d906b7d4aec801b1c9ef566c8a2/FLAG1e59e806d [2022-07-13 14:42:09,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9455a293c/66ba1d906b7d4aec801b1c9ef566c8a2 [2022-07-13 14:42:09,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:42:09,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:42:09,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:42:09,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:42:09,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:42:09,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:42:09" (1/1) ... [2022-07-13 14:42:09,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbe3274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:09, skipping insertion in model container [2022-07-13 14:42:09,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:42:09" (1/1) ... [2022-07-13 14:42:09,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:42:09,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:42:09,921 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/float-newlib/double_req_bl_0883.c[14409,14422] [2022-07-13 14:42:09,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:42:09,933 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:42:10,049 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/float-newlib/double_req_bl_0883.c[14409,14422] [2022-07-13 14:42:10,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:42:10,076 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:42:10,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10 WrapperNode [2022-07-13 14:42:10,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:42:10,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:42:10,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:42:10,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:42:10,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,168 INFO L137 Inliner]: procedures = 25, calls = 164, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 781 [2022-07-13 14:42:10,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:42:10,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:42:10,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:42:10,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:42:10,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:42:10,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:42:10,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:42:10,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:42:10,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (1/1) ... [2022-07-13 14:42:10,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:42:10,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:42:10,321 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) [2022-07-13 14:42:10,344 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 [2022-07-13 14:42:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:42:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-07-13 14:42:10,373 INFO L130 BoogieDeclarations]: Found specification of procedure copysign_double [2022-07-13 14:42:10,373 INFO L138 BoogieDeclarations]: Found implementation of procedure copysign_double [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-13 14:42:10,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:42:10,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:42:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-13 14:42:10,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 14:42:10,540 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:42:10,541 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:43:11,235 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:43:11,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:43:11,243 INFO L299 CfgBuilder]: Removed 60 assume(true) statements. [2022-07-13 14:43:11,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:43:11 BoogieIcfgContainer [2022-07-13 14:43:11,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:43:11,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:43:11,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:43:11,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:43:11,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:42:09" (1/3) ... [2022-07-13 14:43:11,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531a4efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:43:11, skipping insertion in model container [2022-07-13 14:43:11,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:42:10" (2/3) ... [2022-07-13 14:43:11,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531a4efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:43:11, skipping insertion in model container [2022-07-13 14:43:11,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:43:11" (3/3) ... [2022-07-13 14:43:11,252 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0883.c [2022-07-13 14:43:11,274 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:43:11,275 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:43:11,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:43:11,329 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@5de0df6c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e79c134 [2022-07-13 14:43:11,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:43:11,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 208 states, 202 states have (on average 1.702970297029703) internal successors, (344), 203 states have internal predecessors, (344), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-13 14:43:11,340 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:11,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:11,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:11,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2088583523, now seen corresponding path program 1 times [2022-07-13 14:43:11,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:11,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857137297] [2022-07-13 14:43:11,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:11,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:11,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:11,363 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) [2022-07-13 14:43:11,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:43:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:11,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:43:11,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:11,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:11,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:11,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857137297] [2022-07-13 14:43:11,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857137297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:11,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:11,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:43:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465045129] [2022-07-13 14:43:11,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:43:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:11,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:43:11,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:43:11,740 INFO L87 Difference]: Start difference. First operand has 208 states, 202 states have (on average 1.702970297029703) internal successors, (344), 203 states have internal predecessors, (344), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:11,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:43:11,816 INFO L93 Difference]: Finished difference Result 413 states and 699 transitions. [2022-07-13 14:43:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:43:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-13 14:43:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:43:11,831 INFO L225 Difference]: With dead ends: 413 [2022-07-13 14:43:11,831 INFO L226 Difference]: Without dead ends: 204 [2022-07-13 14:43:11,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:43:11,842 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:43:11,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:43:11,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-13 14:43:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-07-13 14:43:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3969849246231156) internal successors, (278), 199 states have internal predecessors, (278), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 284 transitions. [2022-07-13 14:43:11,910 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 284 transitions. Word has length 13 [2022-07-13 14:43:11,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:43:11,910 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 284 transitions. [2022-07-13 14:43:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 284 transitions. [2022-07-13 14:43:11,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 14:43:11,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:11,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:11,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:43:12,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:43:12,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:12,131 INFO L85 PathProgramCache]: Analyzing trace with hash -344978042, now seen corresponding path program 1 times [2022-07-13 14:43:12,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057088696] [2022-07-13 14:43:12,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:12,133 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:12,134 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) [2022-07-13 14:43:12,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:43:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:12,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-13 14:43:12,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:14,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:14,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:14,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057088696] [2022-07-13 14:43:14,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057088696] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:14,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:14,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:43:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194126622] [2022-07-13 14:43:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:43:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:43:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:43:14,486 INFO L87 Difference]: Start difference. First operand 204 states and 284 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:17,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:43:17,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:43:17,406 INFO L93 Difference]: Finished difference Result 212 states and 291 transitions. [2022-07-13 14:43:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:43:17,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-07-13 14:43:17,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:43:17,554 INFO L225 Difference]: With dead ends: 212 [2022-07-13 14:43:17,554 INFO L226 Difference]: Without dead ends: 204 [2022-07-13 14:43:17,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:43:17,556 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 2 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 14:43:17,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1057 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 57 Unchecked, 2.5s Time] [2022-07-13 14:43:17,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-13 14:43:17,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-07-13 14:43:17,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3919597989949748) internal successors, (277), 199 states have internal predecessors, (277), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:17,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 283 transitions. [2022-07-13 14:43:17,565 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 283 transitions. Word has length 16 [2022-07-13 14:43:17,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:43:17,566 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 283 transitions. [2022-07-13 14:43:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:17,566 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 283 transitions. [2022-07-13 14:43:17,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:43:17,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:17,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:17,581 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:43:17,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:43:17,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:17,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:17,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1132958113, now seen corresponding path program 1 times [2022-07-13 14:43:17,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:17,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1130600387] [2022-07-13 14:43:17,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:17,773 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:17,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:17,774 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) [2022-07-13 14:43:17,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:43:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:18,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:43:18,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:20,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:20,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:20,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1130600387] [2022-07-13 14:43:20,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1130600387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:20,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:20,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:43:20,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093637608] [2022-07-13 14:43:20,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:20,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:43:20,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:43:20,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:43:20,932 INFO L87 Difference]: Start difference. First operand 204 states and 283 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:43:20,942 INFO L93 Difference]: Finished difference Result 212 states and 290 transitions. [2022-07-13 14:43:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:43:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:43:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:43:20,944 INFO L225 Difference]: With dead ends: 212 [2022-07-13 14:43:20,944 INFO L226 Difference]: Without dead ends: 204 [2022-07-13 14:43:20,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:43:20,945 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:43:20,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1336 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-07-13 14:43:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-07-13 14:43:20,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2022-07-13 14:43:20,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 199 states have (on average 1.3869346733668342) internal successors, (276), 199 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 282 transitions. [2022-07-13 14:43:20,956 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 282 transitions. Word has length 18 [2022-07-13 14:43:20,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:43:20,957 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 282 transitions. [2022-07-13 14:43:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 282 transitions. [2022-07-13 14:43:20,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 14:43:20,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:20,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:20,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 14:43:21,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:43:21,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash 323611487, now seen corresponding path program 1 times [2022-07-13 14:43:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:21,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772667658] [2022-07-13 14:43:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:21,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:21,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:21,173 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) [2022-07-13 14:43:21,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:43:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:21,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 14:43:21,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:22,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-13 14:43:22,831 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-13 14:43:24,551 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 14:43:24,552 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-07-13 14:43:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:32,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:32,853 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:32,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772667658] [2022-07-13 14:43:32,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772667658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:32,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:32,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:43:32,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988414317] [2022-07-13 14:43:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:32,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:43:32,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:32,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:43:32,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:43:32,856 INFO L87 Difference]: Start difference. First operand 204 states and 282 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:32,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:43:32,866 INFO L93 Difference]: Finished difference Result 212 states and 289 transitions. [2022-07-13 14:43:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:43:32,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-13 14:43:32,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:43:32,868 INFO L225 Difference]: With dead ends: 212 [2022-07-13 14:43:32,868 INFO L226 Difference]: Without dead ends: 203 [2022-07-13 14:43:32,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:43:32,870 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 0 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:43:32,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1495 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 152 Unchecked, 0.0s Time] [2022-07-13 14:43:32,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-13 14:43:32,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-07-13 14:43:32,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.3838383838383839) internal successors, (274), 198 states have internal predecessors, (274), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 280 transitions. [2022-07-13 14:43:32,889 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 280 transitions. Word has length 18 [2022-07-13 14:43:32,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:43:32,890 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 280 transitions. [2022-07-13 14:43:32,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 280 transitions. [2022-07-13 14:43:32,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-13 14:43:32,894 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:32,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:32,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-13 14:43:33,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:43:33,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:33,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1542318796, now seen corresponding path program 1 times [2022-07-13 14:43:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:33,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201122677] [2022-07-13 14:43:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:33,113 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) [2022-07-13 14:43:33,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-13 14:43:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:43:33,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:36,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:36,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:36,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201122677] [2022-07-13 14:43:36,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201122677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:36,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:36,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:43:36,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668675297] [2022-07-13 14:43:36,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:36,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:43:36,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:43:36,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:43:36,663 INFO L87 Difference]: Start difference. First operand 203 states and 280 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:36,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:43:36,673 INFO L93 Difference]: Finished difference Result 225 states and 306 transitions. [2022-07-13 14:43:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:43:36,673 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-13 14:43:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:43:36,676 INFO L225 Difference]: With dead ends: 225 [2022-07-13 14:43:36,676 INFO L226 Difference]: Without dead ends: 217 [2022-07-13 14:43:36,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:43:36,677 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 107 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:43:36,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 1199 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 45 Unchecked, 0.0s Time] [2022-07-13 14:43:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-13 14:43:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2022-07-13 14:43:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.378787878787879) internal successors, (273), 198 states have internal predecessors, (273), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:43:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 279 transitions. [2022-07-13 14:43:36,685 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 279 transitions. Word has length 21 [2022-07-13 14:43:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:43:36,686 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 279 transitions. [2022-07-13 14:43:36,686 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:36,686 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 279 transitions. [2022-07-13 14:43:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 14:43:36,687 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:43:36,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:43:36,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-13 14:43:36,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:43:36,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:43:36,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:43:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash -905842467, now seen corresponding path program 1 times [2022-07-13 14:43:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:43:36,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284783908] [2022-07-13 14:43:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:43:36,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:43:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:43:36,907 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) [2022-07-13 14:43:36,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-13 14:43:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:43:37,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-13 14:43:37,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:43:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:43:44,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:43:44,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:43:44,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284783908] [2022-07-13 14:43:44,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284783908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:43:44,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:43:44,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 14:43:44,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889817390] [2022-07-13 14:43:44,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:43:44,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 14:43:44,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:43:44,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 14:43:44,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 14:43:44,390 INFO L87 Difference]: Start difference. First operand 203 states and 279 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:43:48,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:43:53,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:43:57,210 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:43:59,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:02,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:03,922 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:05,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:08,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:11,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.67s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:13,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:16,380 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:17,923 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:19,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:22,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.66s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:25,600 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:29,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:32,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:35,106 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:37,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:39,381 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:41,385 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:42,464 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:44,730 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:46,733 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:49,024 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:51,028 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:53,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:44:56,338 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:00,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:02,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:04,384 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:06,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:08,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:10,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:13,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:15,190 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:17,308 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:19,424 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:45:19,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:45:19,424 INFO L93 Difference]: Finished difference Result 227 states and 307 transitions. [2022-07-13 14:45:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 14:45:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 14:45:19,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:45:19,467 INFO L225 Difference]: With dead ends: 227 [2022-07-13 14:45:19,468 INFO L226 Difference]: Without dead ends: 219 [2022-07-13 14:45:19,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-13 14:45:19,469 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 477 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 92.2s IncrementalHoareTripleChecker+Time [2022-07-13 14:45:19,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1603 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 28 Unknown, 74 Unchecked, 92.2s Time] [2022-07-13 14:45:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-07-13 14:45:19,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 203. [2022-07-13 14:45:19,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 198 states have (on average 1.3686868686868687) internal successors, (271), 198 states have internal predecessors, (271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:45:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 277 transitions. [2022-07-13 14:45:19,480 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 277 transitions. Word has length 22 [2022-07-13 14:45:19,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:45:19,482 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 277 transitions. [2022-07-13 14:45:19,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:19,482 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 277 transitions. [2022-07-13 14:45:19,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 14:45:19,482 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:45:19,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:45:19,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-13 14:45:19,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:45:19,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:45:19,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:45:19,684 INFO L85 PathProgramCache]: Analyzing trace with hash -453333571, now seen corresponding path program 1 times [2022-07-13 14:45:19,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:45:19,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941221592] [2022-07-13 14:45:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:45:19,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:45:19,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:45:19,686 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) [2022-07-13 14:45:19,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-13 14:45:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:45:20,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:45:20,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:45:27,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:45:27,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:45:27,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:45:27,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941221592] [2022-07-13 14:45:27,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941221592] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:45:27,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:45:27,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:45:27,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575762044] [2022-07-13 14:45:27,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:45:27,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:45:27,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:45:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:45:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=6, Unknown=1, NotChecked=0, Total=12 [2022-07-13 14:45:27,499 INFO L87 Difference]: Start difference. First operand 203 states and 277 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:29,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:45:29,896 INFO L93 Difference]: Finished difference Result 326 states and 436 transitions. [2022-07-13 14:45:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:45:29,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-13 14:45:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:45:29,899 INFO L225 Difference]: With dead ends: 326 [2022-07-13 14:45:29,899 INFO L226 Difference]: Without dead ends: 317 [2022-07-13 14:45:29,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=9, Invalid=10, Unknown=1, NotChecked=0, Total=20 [2022-07-13 14:45:29,900 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 157 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:45:29,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 760 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-07-13 14:45:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-13 14:45:29,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 202. [2022-07-13 14:45:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.365482233502538) internal successors, (269), 197 states have internal predecessors, (269), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:45:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 275 transitions. [2022-07-13 14:45:29,910 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 275 transitions. Word has length 22 [2022-07-13 14:45:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:45:29,911 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 275 transitions. [2022-07-13 14:45:29,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 275 transitions. [2022-07-13 14:45:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 14:45:29,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:45:29,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:45:29,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-07-13 14:45:30,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:45:30,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:45:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:45:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1563004682, now seen corresponding path program 1 times [2022-07-13 14:45:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:45:30,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154278995] [2022-07-13 14:45:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:45:30,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:45:30,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:45:30,129 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) [2022-07-13 14:45:30,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-13 14:45:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:45:30,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:45:30,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:45:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:45:34,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:45:34,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:45:34,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1154278995] [2022-07-13 14:45:34,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1154278995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:45:34,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:45:34,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 14:45:34,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720845575] [2022-07-13 14:45:34,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:45:34,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 14:45:34,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:45:34,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 14:45:34,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:45:34,082 INFO L87 Difference]: Start difference. First operand 202 states and 275 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:34,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:45:34,092 INFO L93 Difference]: Finished difference Result 224 states and 301 transitions. [2022-07-13 14:45:34,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 14:45:34,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 14:45:34,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:45:34,094 INFO L225 Difference]: With dead ends: 224 [2022-07-13 14:45:34,094 INFO L226 Difference]: Without dead ends: 214 [2022-07-13 14:45:34,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 14:45:34,095 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 103 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:45:34,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 1191 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-07-13 14:45:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-07-13 14:45:34,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 200. [2022-07-13 14:45:34,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.358974358974359) internal successors, (265), 195 states have internal predecessors, (265), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:45:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 271 transitions. [2022-07-13 14:45:34,104 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 271 transitions. Word has length 24 [2022-07-13 14:45:34,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:45:34,104 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 271 transitions. [2022-07-13 14:45:34,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:34,105 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 271 transitions. [2022-07-13 14:45:34,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 14:45:34,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:45:34,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:45:34,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-13 14:45:34,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:45:34,320 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:45:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:45:34,320 INFO L85 PathProgramCache]: Analyzing trace with hash -381543917, now seen corresponding path program 1 times [2022-07-13 14:45:34,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:45:34,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058115333] [2022-07-13 14:45:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:45:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:45:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:45:34,322 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) [2022-07-13 14:45:34,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-13 14:45:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:45:34,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 14:45:34,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:45:35,482 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-07-13 14:45:46,258 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-13 14:45:46,259 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2022-07-13 14:45:50,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:45:50,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:45:50,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:45:50,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058115333] [2022-07-13 14:45:50,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058115333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:45:50,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:45:50,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-13 14:45:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85903836] [2022-07-13 14:45:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:45:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-13 14:45:50,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:45:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-13 14:45:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 14:45:50,402 INFO L87 Difference]: Start difference. First operand 200 states and 271 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:45:50,465 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2022-07-13 14:45:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 14:45:50,467 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 14:45:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:45:50,468 INFO L225 Difference]: With dead ends: 217 [2022-07-13 14:45:50,468 INFO L226 Difference]: Without dead ends: 208 [2022-07-13 14:45:50,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-13 14:45:50,469 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 11 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:45:50,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2114 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 195 Unchecked, 0.0s Time] [2022-07-13 14:45:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-13 14:45:50,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 205. [2022-07-13 14:45:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.36) internal successors, (272), 200 states have internal predecessors, (272), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:45:50,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 278 transitions. [2022-07-13 14:45:50,477 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 278 transitions. Word has length 24 [2022-07-13 14:45:50,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:45:50,477 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 278 transitions. [2022-07-13 14:45:50,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:45:50,478 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 278 transitions. [2022-07-13 14:45:50,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-13 14:45:50,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:45:50,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:45:50,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-13 14:45:50,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:45:50,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:45:50,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:45:50,692 INFO L85 PathProgramCache]: Analyzing trace with hash 298514453, now seen corresponding path program 1 times [2022-07-13 14:45:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:45:50,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225622099] [2022-07-13 14:45:50,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:45:50,693 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:45:50,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:45:50,694 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) [2022-07-13 14:45:50,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-13 14:45:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:45:50,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:45:50,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:45:53,694 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_skolemized_q#valueAsBitvector_105| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_105|) |c_ULTIMATE.start___ieee754_pow_~hy~1#1|) (fp.gt (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_105|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_105|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_105|)) (_ +zero 11 53)))) is different from true [2022-07-13 14:45:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:45:55,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:45:55,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:45:55,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225622099] [2022-07-13 14:45:55,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225622099] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:45:55,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:45:55,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:45:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284941378] [2022-07-13 14:45:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:45:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:45:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:45:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:45:55,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2022-07-13 14:45:55,295 INFO L87 Difference]: Start difference. First operand 205 states and 278 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:01,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:46:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:46:01,058 INFO L93 Difference]: Finished difference Result 214 states and 286 transitions. [2022-07-13 14:46:01,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:46:01,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-13 14:46:01,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:46:01,205 INFO L225 Difference]: With dead ends: 214 [2022-07-13 14:46:01,206 INFO L226 Difference]: Without dead ends: 202 [2022-07-13 14:46:01,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2022-07-13 14:46:01,206 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 2 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 14:46:01,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 521 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 1 Unknown, 276 Unchecked, 2.4s Time] [2022-07-13 14:46:01,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-07-13 14:46:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2022-07-13 14:46:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 197 states have internal predecessors, (268), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:46:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 274 transitions. [2022-07-13 14:46:01,220 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 274 transitions. Word has length 24 [2022-07-13 14:46:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:46:01,220 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 274 transitions. [2022-07-13 14:46:01,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 274 transitions. [2022-07-13 14:46:01,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-13 14:46:01,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:46:01,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:46:01,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-13 14:46:01,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:46:01,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:46:01,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:46:01,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1525152654, now seen corresponding path program 1 times [2022-07-13 14:46:01,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:46:01,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1283408175] [2022-07-13 14:46:01,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:46:01,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:46:01,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:46:01,424 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) [2022-07-13 14:46:01,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-13 14:46:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:46:01,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 14:46:01,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:46:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:46:03,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:46:03,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:46:03,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1283408175] [2022-07-13 14:46:03,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1283408175] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:46:03,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:46:03,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 14:46:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202325022] [2022-07-13 14:46:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:46:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 14:46:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:46:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 14:46:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:46:03,979 INFO L87 Difference]: Start difference. First operand 202 states and 274 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:03,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:46:03,986 INFO L93 Difference]: Finished difference Result 379 states and 512 transitions. [2022-07-13 14:46:03,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:46:03,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-07-13 14:46:03,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:46:03,987 INFO L225 Difference]: With dead ends: 379 [2022-07-13 14:46:03,988 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 14:46:03,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:46:03,989 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 0 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:46:03,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 975 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 15 Unchecked, 0.0s Time] [2022-07-13 14:46:03,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 14:46:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-07-13 14:46:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.3297297297297297) internal successors, (246), 185 states have internal predecessors, (246), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:46:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2022-07-13 14:46:03,995 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 25 [2022-07-13 14:46:03,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:46:03,996 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2022-07-13 14:46:03,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2022-07-13 14:46:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 14:46:03,997 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:46:03,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:46:04,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-13 14:46:04,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:46:04,212 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:46:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:46:04,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1833458477, now seen corresponding path program 1 times [2022-07-13 14:46:04,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:46:04,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834631116] [2022-07-13 14:46:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:46:04,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:46:04,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:46:04,214 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) [2022-07-13 14:46:04,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-13 14:46:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:46:05,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 14:46:05,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:46:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:46:09,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:46:09,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:46:09,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834631116] [2022-07-13 14:46:09,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834631116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:46:09,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:46:09,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:46:09,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476520884] [2022-07-13 14:46:09,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:46:09,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 14:46:09,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:46:09,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 14:46:09,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:46:09,456 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:09,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:46:09,513 INFO L93 Difference]: Finished difference Result 309 states and 404 transitions. [2022-07-13 14:46:09,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 14:46:09,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-07-13 14:46:09,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:46:09,515 INFO L225 Difference]: With dead ends: 309 [2022-07-13 14:46:09,515 INFO L226 Difference]: Without dead ends: 190 [2022-07-13 14:46:09,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 14:46:09,516 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 217 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 14:46:09,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1212 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-07-13 14:46:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-07-13 14:46:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-07-13 14:46:09,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.3243243243243243) internal successors, (245), 185 states have internal predecessors, (245), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-13 14:46:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 251 transitions. [2022-07-13 14:46:09,530 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 251 transitions. Word has length 28 [2022-07-13 14:46:09,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:46:09,531 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 251 transitions. [2022-07-13 14:46:09,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:09,531 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 251 transitions. [2022-07-13 14:46:09,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-13 14:46:09,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:46:09,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:46:09,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-13 14:46:09,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:46:09,744 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:46:09,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:46:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash 652594766, now seen corresponding path program 1 times [2022-07-13 14:46:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:46:09,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955695595] [2022-07-13 14:46:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:46:09,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:46:09,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:46:09,746 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) [2022-07-13 14:46:09,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-13 14:46:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:46:10,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 14:46:10,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:46:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:46:20,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:46:20,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:46:20,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955695595] [2022-07-13 14:46:20,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955695595] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:46:20,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:46:20,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 14:46:20,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7271723] [2022-07-13 14:46:20,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:46:20,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 14:46:20,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:46:20,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 14:46:20,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 14:46:20,116 INFO L87 Difference]: Start difference. First operand 190 states and 251 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 14:46:29,448 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:46:35,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:46:38,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:46:40,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []