./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:37:39,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:37:39,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:37:39,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:37:39,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:37:39,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:37:39,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:37:39,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:37:39,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:37:39,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:37:39,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:37:39,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:37:39,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:37:39,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:37:39,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:37:39,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:37:39,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:37:39,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:37:39,203 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:37:39,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:37:39,209 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:37:39,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:37:39,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:37:39,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:37:39,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:37:39,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:37:39,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:37:39,218 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:37:39,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:37:39,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:37:39,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:37:39,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:37:39,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:37:39,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:37:39,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:37:39,224 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:37:39,224 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:37:39,225 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:37:39,225 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:37:39,225 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:37:39,226 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:37:39,227 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:37:39,228 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 12:37:39,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:37:39,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:37:39,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:37:39,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:37:39,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:37:39,261 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:37:39,262 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:37:39,262 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:37:39,262 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:37:39,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:37:39,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 12:37:39,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:37:39,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:37:39,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:37:39,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:37:39,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:37:39,264 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:37:39,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:37:39,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:37:39,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:37:39,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:37:39,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:37:39,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:37:39,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:37:39,266 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:37:39,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 12:37:39,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 12:37:39,267 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:37:39,267 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:37:39,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:37:39,267 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2022-07-21 12:37:39,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:37:39,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:37:39,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:37:39,594 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:37:39,595 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:37:39,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-07-21 12:37:39,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e82663c6e/7684f21cec984b7cbe7ebdce92a0e02a/FLAG97840f91d [2022-07-21 12:37:40,676 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:37:40,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-07-21 12:37:40,739 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e82663c6e/7684f21cec984b7cbe7ebdce92a0e02a/FLAG97840f91d [2022-07-21 12:37:41,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e82663c6e/7684f21cec984b7cbe7ebdce92a0e02a [2022-07-21 12:37:41,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:37:41,130 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:37:41,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:37:41,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:37:41,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:37:41,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:37:41" (1/1) ... [2022-07-21 12:37:41,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1083d59c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:41, skipping insertion in model container [2022-07-21 12:37:41,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:37:41" (1/1) ... [2022-07-21 12:37:41,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:37:41,317 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:37:45,463 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-07-21 12:37:45,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:37:45,562 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:37:45,997 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckException: Type check failed for C: desc = (unsigned int )*((bcsp___0->rx_skb)->data + 1UL) & 15U [10038] at de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) at de.uni_freiburg.informatik.ultimate.boogie.typechecker.TypeCheckHelper.typeCheckBinaryExpression(TypeCheckHelper.java:207) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.constructBinaryExpression(ExpressionFactory.java:597) at de.uni_freiburg.informatik.ultimate.boogie.ExpressionFactory.newBinaryExpression(ExpressionFactory.java:132) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:483) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1627) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:332) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 12:37:46,015 INFO L158 Benchmark]: Toolchain (without parser) took 4884.04ms. Allocated memory was 58.7MB in the beginning and 132.1MB in the end (delta: 73.4MB). Free memory was 33.9MB in the beginning and 60.4MB in the end (delta: -26.5MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2022-07-21 12:37:46,032 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 12:37:46,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4881.63ms. Allocated memory was 58.7MB in the beginning and 132.1MB in the end (delta: 73.4MB). Free memory was 33.7MB in the beginning and 60.4MB in the end (delta: -26.6MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. [2022-07-21 12:37:46,034 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 58.7MB. Free memory was 40.5MB in the beginning and 40.4MB in the end (delta: 45.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4881.63ms. Allocated memory was 58.7MB in the beginning and 132.1MB in the end (delta: 73.4MB). Free memory was 33.7MB in the beginning and 60.4MB in the end (delta: -26.6MB). Peak memory consumption was 71.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: TypeCheckException: Type check failed for C: desc = (unsigned int )*((bcsp___0->rx_skb)->data + 1UL) & 15U [10038] de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: TypeCheckException: Type check failed for C: desc = (unsigned int )*((bcsp___0->rx_skb)->data + 1UL) & 15U [10038]: de.uni_freiburg.informatik.ultimate.boogie.TypeErrorReporter.report(TypeErrorReporter.java:52) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 12:37:47,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 12:37:47,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 12:37:47,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 12:37:47,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 12:37:47,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 12:37:47,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 12:37:47,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 12:37:47,796 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 12:37:47,802 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 12:37:47,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 12:37:47,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 12:37:47,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 12:37:47,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 12:37:47,806 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 12:37:47,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 12:37:47,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 12:37:47,808 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 12:37:47,810 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 12:37:47,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 12:37:47,812 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 12:37:47,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 12:37:47,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 12:37:47,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 12:37:47,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 12:37:47,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 12:37:47,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 12:37:47,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 12:37:47,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 12:37:47,820 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 12:37:47,821 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 12:37:47,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 12:37:47,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 12:37:47,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 12:37:47,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 12:37:47,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 12:37:47,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 12:37:47,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 12:37:47,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 12:37:47,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 12:37:47,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 12:37:47,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 12:37:47,828 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 12:37:47,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 12:37:47,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 12:37:47,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 12:37:47,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 12:37:47,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 12:37:47,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 12:37:47,850 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 12:37:47,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 12:37:47,851 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 12:37:47,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 12:37:47,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 12:37:47,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 12:37:47,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 12:37:47,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 12:37:47,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 12:37:47,852 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 12:37:47,853 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 12:37:47,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 12:37:47,853 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 12:37:47,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 12:37:47,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 12:37:47,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 12:37:47,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 12:37:47,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:37:47,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 12:37:47,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 12:37:47,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 12:37:47,855 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 12:37:47,856 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 12:37:47,856 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 12:37:47,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 12:37:47,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 12:37:47,856 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 12:37:47,857 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2022-07-21 12:37:48,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 12:37:48,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 12:37:48,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 12:37:48,230 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 12:37:48,230 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 12:37:48,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-07-21 12:37:48,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bfcdd6f/cd8d14db7e304146b7b48eded6c96837/FLAG043bc3e25 [2022-07-21 12:37:49,171 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 12:37:49,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-07-21 12:37:49,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bfcdd6f/cd8d14db7e304146b7b48eded6c96837/FLAG043bc3e25 [2022-07-21 12:37:49,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3bfcdd6f/cd8d14db7e304146b7b48eded6c96837 [2022-07-21 12:37:49,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 12:37:49,306 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 12:37:49,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 12:37:49,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 12:37:49,312 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 12:37:49,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:37:49" (1/1) ... [2022-07-21 12:37:49,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fdb20f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:49, skipping insertion in model container [2022-07-21 12:37:49,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:37:49" (1/1) ... [2022-07-21 12:37:49,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 12:37:49,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:37:53,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-07-21 12:37:53,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:37:53,254 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 12:37:53,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 12:37:53,708 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-07-21 12:37:53,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:37:53,732 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 12:37:54,279 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2022-07-21 12:37:54,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 12:37:54,596 INFO L208 MainTranslator]: Completed translation [2022-07-21 12:37:54,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54 WrapperNode [2022-07-21 12:37:54,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 12:37:54,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 12:37:54,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 12:37:54,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 12:37:54,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:54,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:54,862 INFO L137 Inliner]: procedures = 504, calls = 4666, calls flagged for inlining = 135, calls inlined = 106, statements flattened = 6188 [2022-07-21 12:37:54,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 12:37:54,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 12:37:54,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 12:37:54,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 12:37:54,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:54,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:54,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:54,909 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:55,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:55,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:55,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:55,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 12:37:55,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 12:37:55,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 12:37:55,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 12:37:55,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (1/1) ... [2022-07-21 12:37:55,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 12:37:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 12:37:55,221 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 12:37:55,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 12:37:55,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2022-07-21 12:37:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2022-07-21 12:37:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_prepare_pkt [2022-07-21 12:37:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_prepare_pkt [2022-07-21 12:37:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-07-21 12:37:55,271 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-07-21 12:37:55,271 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2022-07-21 12:37:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2022-07-21 12:37:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_setup [2022-07-21 12:37:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_setup [2022-07-21 12:37:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-07-21 12:37:55,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-07-21 12:37:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 12:37:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 12:37:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure ll_dequeue [2022-07-21 12:37:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_dequeue [2022-07-21 12:37:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_close [2022-07-21 12:37:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_close [2022-07-21 12:37:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2022-07-21 12:37:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2022-07-21 12:37:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-21 12:37:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-21 12:37:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 12:37:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 12:37:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_flush [2022-07-21 12:37:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_flush [2022-07-21 12:37:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure ath_dequeue [2022-07-21 12:37:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_dequeue [2022-07-21 12:37:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2022-07-21 12:37:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2022-07-21 12:37:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 12:37:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure h5_link_control [2022-07-21 12:37:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_link_control [2022-07-21 12:37:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-07-21 12:37:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-07-21 12:37:55,276 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 12:37:55,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 12:37:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure bt_skb_alloc___1 [2022-07-21 12:37:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure bt_skb_alloc___1 [2022-07-21 12:37:55,277 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2022-07-21 12:37:55,277 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2022-07-21 12:37:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 12:37:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 12:37:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 12:37:55,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 12:37:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure h4_enqueue [2022-07-21 12:37:55,279 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_enqueue [2022-07-21 12:37:55,279 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2022-07-21 12:37:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2022-07-21 12:37:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2022-07-21 12:37:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2022-07-21 12:37:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2022-07-21 12:37:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2022-07-21 12:37:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2022-07-21 12:37:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 12:37:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 12:37:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ll_do_awake [2022-07-21 12:37:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __ll_do_awake [2022-07-21 12:37:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2022-07-21 12:37:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2022-07-21 12:37:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure h5_enqueue [2022-07-21 12:37:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_enqueue [2022-07-21 12:37:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_complete_rx_pkt [2022-07-21 12:37:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_complete_rx_pkt [2022-07-21 12:37:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 12:37:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 12:37:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_unregister_proto [2022-07-21 12:37:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_unregister_proto [2022-07-21 12:37:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-07-21 12:37:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-07-21 12:37:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure hci_get_drvdata [2022-07-21 12:37:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_get_drvdata [2022-07-21 12:37:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2022-07-21 12:37:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2022-07-21 12:37:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2022-07-21 12:37:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2022-07-21 12:37:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2022-07-21 12:37:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_recv [2022-07-21 12:37:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_recv [2022-07-21 12:37:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 12:37:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-07-21 12:37:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_register_proto [2022-07-21 12:37:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_register_proto [2022-07-21 12:37:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_recv [2022-07-21 12:37:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_recv [2022-07-21 12:37:55,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-07-21 12:37:55,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-07-21 12:37:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_flush [2022-07-21 12:37:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_flush [2022-07-21 12:37:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 12:37:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2022-07-21 12:37:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2022-07-21 12:37:55,289 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2022-07-21 12:37:55,289 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2022-07-21 12:37:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 12:37:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure bscp_get_crc [2022-07-21 12:37:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure bscp_get_crc [2022-07-21 12:37:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 12:37:55,290 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 12:37:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 12:37:55,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 12:37:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 12:37:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:37:55,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 12:37:55,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 12:37:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2022-07-21 12:37:55,292 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2022-07-21 12:37:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2022-07-21 12:37:55,292 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2022-07-21 12:37:55,292 INFO L130 BoogieDeclarations]: Found specification of procedure ll_close [2022-07-21 12:37:55,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_close [2022-07-21 12:37:55,293 INFO L130 BoogieDeclarations]: Found specification of procedure hci_register_dev [2022-07-21 12:37:55,295 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_register_dev [2022-07-21 12:37:55,296 INFO L130 BoogieDeclarations]: Found specification of procedure send_hcill_cmd [2022-07-21 12:37:55,296 INFO L138 BoogieDeclarations]: Found implementation of procedure send_hcill_cmd [2022-07-21 12:37:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-21 12:37:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-21 12:37:55,298 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-07-21 12:37:55,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_INT~TO~C_INT [2022-07-21 12:37:55,299 INFO L130 BoogieDeclarations]: Found specification of procedure ath_flush [2022-07-21 12:37:55,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_flush [2022-07-21 12:37:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_msgdelim [2022-07-21 12:37:55,305 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_msgdelim [2022-07-21 12:37:55,305 INFO L130 BoogieDeclarations]: Found specification of procedure h4_dequeue [2022-07-21 12:37:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_dequeue [2022-07-21 12:37:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2022-07-21 12:37:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2022-07-21 12:37:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure h5_prepare_pkt [2022-07-21 12:37:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_prepare_pkt [2022-07-21 12:37:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 12:37:55,306 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 12:37:55,306 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-21 12:37:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-21 12:37:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_open [2022-07-21 12:37:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_open [2022-07-21 12:37:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 12:37:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 12:37:55,307 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_close [2022-07-21 12:37:55,307 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_close [2022-07-21 12:37:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 12:37:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 12:37:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 12:37:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 12:37:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 12:37:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 12:37:55,308 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 12:37:55,308 INFO L130 BoogieDeclarations]: Found specification of procedure h5_flush [2022-07-21 12:37:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_flush [2022-07-21 12:37:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 12:37:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure ll_check_data_len [2022-07-21 12:37:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_check_data_len [2022-07-21 12:37:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 12:37:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2022-07-21 12:37:55,309 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2022-07-21 12:37:55,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 12:37:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 12:37:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 12:37:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 12:37:55,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 12:37:55,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 12:37:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_one_byte [2022-07-21 12:37:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_one_byte [2022-07-21 12:37:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 12:37:55,311 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 12:37:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2022-07-21 12:37:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2022-07-21 12:37:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_set_baudrate [2022-07-21 12:37:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_set_baudrate [2022-07-21 12:37:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2022-07-21 12:37:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2022-07-21 12:37:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2022-07-21 12:37:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2022-07-21 12:37:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure ath_open [2022-07-21 12:37:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_open [2022-07-21 12:37:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure ath_setup [2022-07-21 12:37:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_setup [2022-07-21 12:37:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 12:37:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 12:37:55,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2022-07-21 12:37:55,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~X~C_UINT~TO~C_INT [2022-07-21 12:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_dequeue [2022-07-21 12:37:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_dequeue [2022-07-21 12:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 12:37:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 12:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure hci_free_dev [2022-07-21 12:37:55,314 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_free_dev [2022-07-21 12:37:55,314 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head [2022-07-21 12:37:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head [2022-07-21 12:37:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 12:37:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 12:37:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure h4_open [2022-07-21 12:37:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_open [2022-07-21 12:37:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-07-21 12:37:55,315 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-07-21 12:37:55,315 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2022-07-21 12:37:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2022-07-21 12:37:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2022-07-21 12:37:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2022-07-21 12:37:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 12:37:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure __hci_cmd_sync [2022-07-21 12:37:55,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __hci_cmd_sync [2022-07-21 12:37:55,316 INFO L130 BoogieDeclarations]: Found specification of procedure ath_close [2022-07-21 12:37:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_close [2022-07-21 12:37:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_crc_update [2022-07-21 12:37:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_crc_update [2022-07-21 12:37:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-21 12:37:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-21 12:37:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 12:37:55,317 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2022-07-21 12:37:55,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-07-21 12:37:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2022-07-21 12:37:55,318 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 12:37:55,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 12:37:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 12:37:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure h4_close [2022-07-21 12:37:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_close [2022-07-21 12:37:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2022-07-21 12:37:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2022-07-21 12:37:55,319 INFO L130 BoogieDeclarations]: Found specification of procedure h5_reset_rx [2022-07-21 12:37:55,319 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_reset_rx [2022-07-21 12:37:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2022-07-21 12:37:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2022-07-21 12:37:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure tty_set_termios [2022-07-21 12:37:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_set_termios [2022-07-21 12:37:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv [2022-07-21 12:37:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv [2022-07-21 12:37:55,320 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 12:37:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 12:37:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-07-21 12:37:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-07-21 12:37:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-07-21 12:37:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-07-21 12:37:55,321 INFO L130 BoogieDeclarations]: Found specification of procedure ath_recv [2022-07-21 12:37:55,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_recv [2022-07-21 12:37:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2022-07-21 12:37:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2022-07-21 12:37:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure h5_close [2022-07-21 12:37:55,325 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_close [2022-07-21 12:37:55,325 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_dequeue [2022-07-21 12:37:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_dequeue [2022-07-21 12:37:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-21 12:37:55,326 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-21 12:37:55,326 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_one_byte [2022-07-21 12:37:55,327 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_one_byte [2022-07-21 12:37:55,327 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_open [2022-07-21 12:37:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_open [2022-07-21 12:37:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure h5_dequeue [2022-07-21 12:37:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_dequeue [2022-07-21 12:37:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_delim [2022-07-21 12:37:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_delim [2022-07-21 12:37:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2022-07-21 12:37:55,328 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2022-07-21 12:37:55,328 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2022-07-21 12:37:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2022-07-21 12:37:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ath_enqueue [2022-07-21 12:37:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_enqueue [2022-07-21 12:37:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure h5_open [2022-07-21 12:37:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_open [2022-07-21 12:37:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-21 12:37:55,329 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-21 12:37:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ll_enqueue [2022-07-21 12:37:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_enqueue [2022-07-21 12:37:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 12:37:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 12:37:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 12:37:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 12:37:55,330 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv_buf [2022-07-21 12:37:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv_buf [2022-07-21 12:37:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 12:37:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 12:37:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2022-07-21 12:37:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2022-07-21 12:37:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 12:37:55,331 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 12:37:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 12:37:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 12:37:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 12:37:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 12:37:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 12:37:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 12:37:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2022-07-21 12:37:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2022-07-21 12:37:55,332 INFO L130 BoogieDeclarations]: Found specification of procedure h5_recv [2022-07-21 12:37:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_recv [2022-07-21 12:37:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure ll_open [2022-07-21 12:37:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_open [2022-07-21 12:37:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tx_wakeup [2022-07-21 12:37:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tx_wakeup [2022-07-21 12:37:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-21 12:37:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-21 12:37:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-07-21 12:37:55,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-07-21 12:37:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_set_baudrate [2022-07-21 12:37:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_set_baudrate [2022-07-21 12:37:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure ll_flush [2022-07-21 12:37:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_flush [2022-07-21 12:37:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_enqueue [2022-07-21 12:37:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_enqueue [2022-07-21 12:37:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure ll_recv [2022-07-21 12:37:55,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_recv [2022-07-21 12:37:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_write_work [2022-07-21 12:37:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_write_work [2022-07-21 12:37:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-07-21 12:37:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-07-21 12:37:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2022-07-21 12:37:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2022-07-21 12:37:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2022-07-21 12:37:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2022-07-21 12:37:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2022-07-21 12:37:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2022-07-21 12:37:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_enqueue [2022-07-21 12:37:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_enqueue [2022-07-21 12:37:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-21 12:37:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-21 12:37:55,336 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-07-21 12:37:55,336 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-07-21 12:37:55,337 INFO L130 BoogieDeclarations]: Found specification of procedure h4_flush [2022-07-21 12:37:55,337 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_flush [2022-07-21 12:37:56,225 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 12:37:56,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 12:38:03,172 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 12:39:36,473 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 12:39:36,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 12:39:36,494 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 12:39:36,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:39:36 BoogieIcfgContainer [2022-07-21 12:39:36,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 12:39:36,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 12:39:36,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 12:39:36,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 12:39:36,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:37:49" (1/3) ... [2022-07-21 12:39:36,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6fa6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:39:36, skipping insertion in model container [2022-07-21 12:39:36,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:37:54" (2/3) ... [2022-07-21 12:39:36,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e6fa6dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:39:36, skipping insertion in model container [2022-07-21 12:39:36,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:39:36" (3/3) ... [2022-07-21 12:39:36,509 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2022-07-21 12:39:36,524 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 12:39:36,524 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 12:39:36,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 12:39:36,630 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@58cd74a1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@63b4439 [2022-07-21 12:39:36,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 12:39:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 2532 states, 1721 states have (on average 1.356769320162696) internal successors, (2335), 1769 states have internal predecessors, (2335), 665 states have call successors, (665), 145 states have call predecessors, (665), 144 states have return successors, (655), 644 states have call predecessors, (655), 655 states have call successors, (655) [2022-07-21 12:39:36,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-21 12:39:36,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:36,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:36,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:36,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1855016643, now seen corresponding path program 1 times [2022-07-21 12:39:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:36,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2079901305] [2022-07-21 12:39:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:36,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:36,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:36,708 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:36,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 12:39:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:38,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2134 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:38,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:38,700 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:38,700 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:38,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2079901305] [2022-07-21 12:39:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2079901305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:38,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:38,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011281103] [2022-07-21 12:39:38,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:38,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:38,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:38,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:38,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:38,743 INFO L87 Difference]: Start difference. First operand has 2532 states, 1721 states have (on average 1.356769320162696) internal successors, (2335), 1769 states have internal predecessors, (2335), 665 states have call successors, (665), 145 states have call predecessors, (665), 144 states have return successors, (655), 644 states have call predecessors, (655), 655 states have call successors, (655) Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:39,241 INFO L93 Difference]: Finished difference Result 5050 states and 7495 transitions. [2022-07-21 12:39:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:39,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 57 [2022-07-21 12:39:39,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:39,286 INFO L225 Difference]: With dead ends: 5050 [2022-07-21 12:39:39,286 INFO L226 Difference]: Without dead ends: 2482 [2022-07-21 12:39:39,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:39,324 INFO L413 NwaCegarLoop]: 3638 mSDtfsCounter, 3623 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3623 SdHoareTripleChecker+Valid, 3638 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:39,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3623 Valid, 3638 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:39,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2482 states. [2022-07-21 12:39:39,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2482 to 2482. [2022-07-21 12:39:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2482 states, 1692 states have (on average 1.3504728132387707) internal successors, (2285), 1728 states have internal predecessors, (2285), 647 states have call successors, (647), 143 states have call predecessors, (647), 142 states have return successors, (646), 635 states have call predecessors, (646), 646 states have call successors, (646) [2022-07-21 12:39:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2482 states to 2482 states and 3578 transitions. [2022-07-21 12:39:39,580 INFO L78 Accepts]: Start accepts. Automaton has 2482 states and 3578 transitions. Word has length 57 [2022-07-21 12:39:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:39,580 INFO L495 AbstractCegarLoop]: Abstraction has 2482 states and 3578 transitions. [2022-07-21 12:39:39,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2482 states and 3578 transitions. [2022-07-21 12:39:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-21 12:39:39,590 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:39,590 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:39,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:39,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:39,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:39,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1709645196, now seen corresponding path program 1 times [2022-07-21 12:39:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:39,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938871341] [2022-07-21 12:39:39,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:39,816 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:39,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:39,818 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:39,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 12:39:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:41,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:41,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:41,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:41,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:41,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938871341] [2022-07-21 12:39:41,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938871341] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:41,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:41,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:41,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793191353] [2022-07-21 12:39:41,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:41,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:41,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:41,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:41,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:41,589 INFO L87 Difference]: Start difference. First operand 2482 states and 3578 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:41,878 INFO L93 Difference]: Finished difference Result 4956 states and 7147 transitions. [2022-07-21 12:39:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:41,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2022-07-21 12:39:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:41,902 INFO L225 Difference]: With dead ends: 4956 [2022-07-21 12:39:41,902 INFO L226 Difference]: Without dead ends: 2480 [2022-07-21 12:39:41,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:41,925 INFO L413 NwaCegarLoop]: 3573 mSDtfsCounter, 3560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3560 SdHoareTripleChecker+Valid, 3573 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:41,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3560 Valid, 3573 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-07-21 12:39:42,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2480. [2022-07-21 12:39:42,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 1691 states have (on average 1.3500887049083383) internal successors, (2283), 1727 states have internal predecessors, (2283), 646 states have call successors, (646), 143 states have call predecessors, (646), 142 states have return successors, (645), 634 states have call predecessors, (645), 645 states have call successors, (645) [2022-07-21 12:39:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3574 transitions. [2022-07-21 12:39:42,053 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3574 transitions. Word has length 55 [2022-07-21 12:39:42,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:42,053 INFO L495 AbstractCegarLoop]: Abstraction has 2480 states and 3574 transitions. [2022-07-21 12:39:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:42,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3574 transitions. [2022-07-21 12:39:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-21 12:39:42,057 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:42,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:42,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-21 12:39:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:42,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -107077191, now seen corresponding path program 1 times [2022-07-21 12:39:42,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:42,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [704955871] [2022-07-21 12:39:42,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:42,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:42,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:42,280 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:42,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 12:39:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:43,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2128 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:43,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:43,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:43,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:43,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [704955871] [2022-07-21 12:39:43,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [704955871] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:43,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:43,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:43,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394089201] [2022-07-21 12:39:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:43,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:43,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:43,895 INFO L87 Difference]: Start difference. First operand 2480 states and 3574 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:44,180 INFO L93 Difference]: Finished difference Result 4952 states and 7139 transitions. [2022-07-21 12:39:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2022-07-21 12:39:44,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:44,203 INFO L225 Difference]: With dead ends: 4952 [2022-07-21 12:39:44,204 INFO L226 Difference]: Without dead ends: 2478 [2022-07-21 12:39:44,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:44,266 INFO L413 NwaCegarLoop]: 3569 mSDtfsCounter, 3557 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3557 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:44,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3557 Valid, 3569 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2022-07-21 12:39:44,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2478. [2022-07-21 12:39:44,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2478 states, 1690 states have (on average 1.3497041420118343) internal successors, (2281), 1726 states have internal predecessors, (2281), 645 states have call successors, (645), 143 states have call predecessors, (645), 142 states have return successors, (644), 633 states have call predecessors, (644), 644 states have call successors, (644) [2022-07-21 12:39:44,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2478 states to 2478 states and 3570 transitions. [2022-07-21 12:39:44,369 INFO L78 Accepts]: Start accepts. Automaton has 2478 states and 3570 transitions. Word has length 54 [2022-07-21 12:39:44,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:44,370 INFO L495 AbstractCegarLoop]: Abstraction has 2478 states and 3570 transitions. [2022-07-21 12:39:44,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:44,370 INFO L276 IsEmpty]: Start isEmpty. Operand 2478 states and 3570 transitions. [2022-07-21 12:39:44,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-21 12:39:44,373 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:44,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:44,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-21 12:39:44,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:44,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:44,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1856377378, now seen corresponding path program 1 times [2022-07-21 12:39:44,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:44,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66366169] [2022-07-21 12:39:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:44,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:44,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:44,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:44,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 12:39:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:45,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 2132 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:45,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:46,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:46,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66366169] [2022-07-21 12:39:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66366169] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:46,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:46,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262901752] [2022-07-21 12:39:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:46,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:46,195 INFO L87 Difference]: Start difference. First operand 2478 states and 3570 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:46,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:46,444 INFO L93 Difference]: Finished difference Result 4948 states and 7131 transitions. [2022-07-21 12:39:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:46,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 56 [2022-07-21 12:39:46,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:46,464 INFO L225 Difference]: With dead ends: 4948 [2022-07-21 12:39:46,464 INFO L226 Difference]: Without dead ends: 2476 [2022-07-21 12:39:46,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:46,479 INFO L413 NwaCegarLoop]: 3565 mSDtfsCounter, 3551 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:46,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3565 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:46,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2022-07-21 12:39:46,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2476. [2022-07-21 12:39:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2476 states, 1689 states have (on average 1.3493191237418591) internal successors, (2279), 1725 states have internal predecessors, (2279), 644 states have call successors, (644), 143 states have call predecessors, (644), 142 states have return successors, (643), 632 states have call predecessors, (643), 643 states have call successors, (643) [2022-07-21 12:39:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2476 states to 2476 states and 3566 transitions. [2022-07-21 12:39:46,570 INFO L78 Accepts]: Start accepts. Automaton has 2476 states and 3566 transitions. Word has length 56 [2022-07-21 12:39:46,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:46,571 INFO L495 AbstractCegarLoop]: Abstraction has 2476 states and 3566 transitions. [2022-07-21 12:39:46,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 12:39:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2476 states and 3566 transitions. [2022-07-21 12:39:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-21 12:39:46,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:46,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:46,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-21 12:39:46,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:46,780 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:46,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:46,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1439705741, now seen corresponding path program 1 times [2022-07-21 12:39:46,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:46,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79199396] [2022-07-21 12:39:46,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:46,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:46,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:46,784 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 12:39:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:48,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:48,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:48,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:48,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:48,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:48,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79199396] [2022-07-21 12:39:48,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79199396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:48,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:48,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:48,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552063535] [2022-07-21 12:39:48,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:48,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:48,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:48,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:48,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:48,450 INFO L87 Difference]: Start difference. First operand 2476 states and 3566 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:48,707 INFO L93 Difference]: Finished difference Result 4944 states and 7123 transitions. [2022-07-21 12:39:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-07-21 12:39:48,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:48,724 INFO L225 Difference]: With dead ends: 4944 [2022-07-21 12:39:48,724 INFO L226 Difference]: Without dead ends: 2474 [2022-07-21 12:39:48,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:48,737 INFO L413 NwaCegarLoop]: 3561 mSDtfsCounter, 3545 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3561 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:48,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3561 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2022-07-21 12:39:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2474. [2022-07-21 12:39:48,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1688 states have (on average 1.3489336492890995) internal successors, (2277), 1724 states have internal predecessors, (2277), 643 states have call successors, (643), 143 states have call predecessors, (643), 142 states have return successors, (642), 631 states have call predecessors, (642), 642 states have call successors, (642) [2022-07-21 12:39:48,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3562 transitions. [2022-07-21 12:39:48,846 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3562 transitions. Word has length 61 [2022-07-21 12:39:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:48,847 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 3562 transitions. [2022-07-21 12:39:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3562 transitions. [2022-07-21 12:39:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-21 12:39:48,851 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:48,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:48,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:49,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:49,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:49,060 INFO L85 PathProgramCache]: Analyzing trace with hash 27984260, now seen corresponding path program 1 times [2022-07-21 12:39:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:49,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822103019] [2022-07-21 12:39:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:49,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:49,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:49,063 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:49,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-21 12:39:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:50,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 2152 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:50,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:50,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:50,590 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:50,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822103019] [2022-07-21 12:39:50,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822103019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:50,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:50,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:50,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346529342] [2022-07-21 12:39:50,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:50,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:50,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:50,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:50,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:50,593 INFO L87 Difference]: Start difference. First operand 2474 states and 3562 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:50,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:50,877 INFO L93 Difference]: Finished difference Result 4940 states and 7115 transitions. [2022-07-21 12:39:50,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:50,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 59 [2022-07-21 12:39:50,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:50,898 INFO L225 Difference]: With dead ends: 4940 [2022-07-21 12:39:50,899 INFO L226 Difference]: Without dead ends: 2472 [2022-07-21 12:39:50,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:50,912 INFO L413 NwaCegarLoop]: 3557 mSDtfsCounter, 3543 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3543 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:50,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3543 Valid, 3557 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:50,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-07-21 12:39:50,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2472. [2022-07-21 12:39:50,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2472 states, 1687 states have (on average 1.3485477178423237) internal successors, (2275), 1723 states have internal predecessors, (2275), 642 states have call successors, (642), 143 states have call predecessors, (642), 142 states have return successors, (641), 630 states have call predecessors, (641), 641 states have call successors, (641) [2022-07-21 12:39:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2472 states to 2472 states and 3558 transitions. [2022-07-21 12:39:51,007 INFO L78 Accepts]: Start accepts. Automaton has 2472 states and 3558 transitions. Word has length 59 [2022-07-21 12:39:51,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:51,008 INFO L495 AbstractCegarLoop]: Abstraction has 2472 states and 3558 transitions. [2022-07-21 12:39:51,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:51,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2472 states and 3558 transitions. [2022-07-21 12:39:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-21 12:39:51,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:51,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:51,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:51,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:51,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:51,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1281574067, now seen corresponding path program 1 times [2022-07-21 12:39:51,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:51,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271917459] [2022-07-21 12:39:51,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:51,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:51,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:51,235 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:51,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-21 12:39:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:52,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 2150 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:52,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:52,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:52,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:52,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271917459] [2022-07-21 12:39:52,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271917459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:52,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:52,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:52,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142006522] [2022-07-21 12:39:52,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:52,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:52,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:52,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:52,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:52,707 INFO L87 Difference]: Start difference. First operand 2472 states and 3558 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:53,002 INFO L93 Difference]: Finished difference Result 4936 states and 7107 transitions. [2022-07-21 12:39:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:53,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-07-21 12:39:53,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:53,016 INFO L225 Difference]: With dead ends: 4936 [2022-07-21 12:39:53,017 INFO L226 Difference]: Without dead ends: 2470 [2022-07-21 12:39:53,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:53,027 INFO L413 NwaCegarLoop]: 3553 mSDtfsCounter, 3540 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3540 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:53,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3540 Valid, 3553 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2022-07-21 12:39:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2470. [2022-07-21 12:39:53,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1686 states have (on average 1.348161328588375) internal successors, (2273), 1722 states have internal predecessors, (2273), 641 states have call successors, (641), 143 states have call predecessors, (641), 142 states have return successors, (640), 629 states have call predecessors, (640), 640 states have call successors, (640) [2022-07-21 12:39:53,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3554 transitions. [2022-07-21 12:39:53,130 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3554 transitions. Word has length 58 [2022-07-21 12:39:53,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:53,130 INFO L495 AbstractCegarLoop]: Abstraction has 2470 states and 3554 transitions. [2022-07-21 12:39:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:53,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3554 transitions. [2022-07-21 12:39:53,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-21 12:39:53,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:53,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:53,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:53,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:53,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:53,356 INFO L85 PathProgramCache]: Analyzing trace with hash 780352758, now seen corresponding path program 1 times [2022-07-21 12:39:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1499206769] [2022-07-21 12:39:53,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:53,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:53,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:53,359 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:53,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-07-21 12:39:54,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:54,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:54,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:54,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 12:39:54,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:54,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:54,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1499206769] [2022-07-21 12:39:54,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1499206769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:54,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:54,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:54,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616023735] [2022-07-21 12:39:54,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:54,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:54,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:54,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:54,940 INFO L87 Difference]: Start difference. First operand 2470 states and 3554 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:55,215 INFO L93 Difference]: Finished difference Result 4562 states and 6551 transitions. [2022-07-21 12:39:55,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:55,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 60 [2022-07-21 12:39:55,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:55,233 INFO L225 Difference]: With dead ends: 4562 [2022-07-21 12:39:55,233 INFO L226 Difference]: Without dead ends: 2098 [2022-07-21 12:39:55,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:55,249 INFO L413 NwaCegarLoop]: 3001 mSDtfsCounter, 2986 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2986 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:55,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2986 Valid, 3001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 12:39:55,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2022-07-21 12:39:55,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 2098. [2022-07-21 12:39:55,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2098 states, 1442 states have (on average 1.3474341192787795) internal successors, (1943), 1467 states have internal predecessors, (1943), 530 states have call successors, (530), 126 states have call predecessors, (530), 125 states have return successors, (529), 522 states have call predecessors, (529), 529 states have call successors, (529) [2022-07-21 12:39:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2098 states to 2098 states and 3002 transitions. [2022-07-21 12:39:55,374 INFO L78 Accepts]: Start accepts. Automaton has 2098 states and 3002 transitions. Word has length 60 [2022-07-21 12:39:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:55,374 INFO L495 AbstractCegarLoop]: Abstraction has 2098 states and 3002 transitions. [2022-07-21 12:39:55,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-21 12:39:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2098 states and 3002 transitions. [2022-07-21 12:39:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 12:39:55,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:55,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:55,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:55,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:55,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:55,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:55,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1189600970, now seen corresponding path program 1 times [2022-07-21 12:39:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [874678862] [2022-07-21 12:39:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:55,599 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:55,601 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:55,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-07-21 12:39:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:39:56,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2177 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:39:56,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:39:57,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 12:39:57,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:39:57,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:39:57,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [874678862] [2022-07-21 12:39:57,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [874678862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:39:57,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:39:57,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:39:57,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082755744] [2022-07-21 12:39:57,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:39:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:39:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:39:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:39:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:57,205 INFO L87 Difference]: Start difference. First operand 2098 states and 3002 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:39:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:39:58,719 INFO L93 Difference]: Finished difference Result 6086 states and 8708 transitions. [2022-07-21 12:39:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:39:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 77 [2022-07-21 12:39:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:39:58,746 INFO L225 Difference]: With dead ends: 6086 [2022-07-21 12:39:58,746 INFO L226 Difference]: Without dead ends: 3994 [2022-07-21 12:39:58,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:39:58,758 INFO L413 NwaCegarLoop]: 3481 mSDtfsCounter, 2703 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 6387 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-21 12:39:58,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2703 Valid, 6387 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-21 12:39:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3994 states. [2022-07-21 12:39:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3994 to 3989. [2022-07-21 12:39:58,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3989 states, 2740 states have (on average 1.345985401459854) internal successors, (3688), 2791 states have internal predecessors, (3688), 1010 states have call successors, (1010), 239 states have call predecessors, (1010), 238 states have return successors, (1009), 994 states have call predecessors, (1009), 1009 states have call successors, (1009) [2022-07-21 12:39:58,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3989 states to 3989 states and 5707 transitions. [2022-07-21 12:39:58,982 INFO L78 Accepts]: Start accepts. Automaton has 3989 states and 5707 transitions. Word has length 77 [2022-07-21 12:39:58,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:39:58,983 INFO L495 AbstractCegarLoop]: Abstraction has 3989 states and 5707 transitions. [2022-07-21 12:39:58,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-21 12:39:58,983 INFO L276 IsEmpty]: Start isEmpty. Operand 3989 states and 5707 transitions. [2022-07-21 12:39:58,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-21 12:39:58,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:39:58,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:39:59,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-07-21 12:39:59,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:39:59,212 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:39:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:39:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1483659580, now seen corresponding path program 1 times [2022-07-21 12:39:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:39:59,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1913054482] [2022-07-21 12:39:59,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:39:59,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:39:59,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:39:59,217 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:39:59,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-07-21 12:40:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:00,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 2135 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:40:00,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 12:40:00,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:00,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:00,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1913054482] [2022-07-21 12:40:00,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1913054482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:00,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:00,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:40:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494694519] [2022-07-21 12:40:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:40:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:40:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:00,741 INFO L87 Difference]: Start difference. First operand 3989 states and 5707 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:01,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:01,642 INFO L93 Difference]: Finished difference Result 11748 states and 16805 transitions. [2022-07-21 12:40:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:40:01,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 75 [2022-07-21 12:40:01,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:01,716 INFO L225 Difference]: With dead ends: 11748 [2022-07-21 12:40:01,716 INFO L226 Difference]: Without dead ends: 7765 [2022-07-21 12:40:01,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:01,737 INFO L413 NwaCegarLoop]: 3715 mSDtfsCounter, 2837 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2837 SdHoareTripleChecker+Valid, 6678 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:01,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2837 Valid, 6678 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:40:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7765 states. [2022-07-21 12:40:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7765 to 7758. [2022-07-21 12:40:02,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 5331 states have (on average 1.3462764959669855) internal successors, (7177), 5434 states have internal predecessors, (7177), 1960 states have call successors, (1960), 467 states have call predecessors, (1960), 466 states have return successors, (1959), 1928 states have call predecessors, (1959), 1959 states have call successors, (1959) [2022-07-21 12:40:02,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11096 transitions. [2022-07-21 12:40:02,202 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11096 transitions. Word has length 75 [2022-07-21 12:40:02,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:02,203 INFO L495 AbstractCegarLoop]: Abstraction has 7758 states and 11096 transitions. [2022-07-21 12:40:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:02,203 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11096 transitions. [2022-07-21 12:40:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-21 12:40:02,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:02,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:02,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:02,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:02,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:02,428 INFO L85 PathProgramCache]: Analyzing trace with hash 598386234, now seen corresponding path program 1 times [2022-07-21 12:40:02,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:02,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765801966] [2022-07-21 12:40:02,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:02,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:02,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:02,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:02,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-07-21 12:40:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:03,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 2170 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:40:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 12:40:04,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:04,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:04,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765801966] [2022-07-21 12:40:04,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765801966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:04,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:04,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:40:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608108094] [2022-07-21 12:40:04,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:04,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:40:04,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:04,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:40:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:04,100 INFO L87 Difference]: Start difference. First operand 7758 states and 11096 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:05,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:05,102 INFO L93 Difference]: Finished difference Result 22153 states and 31638 transitions. [2022-07-21 12:40:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:40:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-07-21 12:40:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:05,179 INFO L225 Difference]: With dead ends: 22153 [2022-07-21 12:40:05,180 INFO L226 Difference]: Without dead ends: 14401 [2022-07-21 12:40:05,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:05,220 INFO L413 NwaCegarLoop]: 3681 mSDtfsCounter, 2573 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2573 SdHoareTripleChecker+Valid, 6644 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:05,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2573 Valid, 6644 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 12:40:05,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-07-21 12:40:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 14390. [2022-07-21 12:40:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14390 states, 9923 states have (on average 1.3474755618260608) internal successors, (13371), 10114 states have internal predecessors, (13371), 3582 states have call successors, (3582), 885 states have call predecessors, (3582), 884 states have return successors, (3581), 3518 states have call predecessors, (3581), 3581 states have call successors, (3581) [2022-07-21 12:40:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14390 states to 14390 states and 20534 transitions. [2022-07-21 12:40:06,290 INFO L78 Accepts]: Start accepts. Automaton has 14390 states and 20534 transitions. Word has length 77 [2022-07-21 12:40:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:06,291 INFO L495 AbstractCegarLoop]: Abstraction has 14390 states and 20534 transitions. [2022-07-21 12:40:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 14390 states and 20534 transitions. [2022-07-21 12:40:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 12:40:06,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:06,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:06,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:06,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:06,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:06,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:06,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1281141742, now seen corresponding path program 1 times [2022-07-21 12:40:06,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:06,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924624482] [2022-07-21 12:40:06,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:06,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:06,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:06,500 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:06,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-07-21 12:40:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:07,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:40:07,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:08,080 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 12:40:08,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:08,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:08,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924624482] [2022-07-21 12:40:08,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924624482] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:08,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:08,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:40:08,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048180060] [2022-07-21 12:40:08,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:08,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:40:08,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:08,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:40:08,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:08,082 INFO L87 Difference]: Start difference. First operand 14390 states and 20534 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:09,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:09,330 INFO L93 Difference]: Finished difference Result 41145 states and 58536 transitions. [2022-07-21 12:40:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:40:09,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 78 [2022-07-21 12:40:09,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:09,461 INFO L225 Difference]: With dead ends: 41145 [2022-07-21 12:40:09,461 INFO L226 Difference]: Without dead ends: 26761 [2022-07-21 12:40:09,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:09,521 INFO L413 NwaCegarLoop]: 4160 mSDtfsCounter, 2595 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2595 SdHoareTripleChecker+Valid, 7123 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:09,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2595 Valid, 7123 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:40:09,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26761 states. [2022-07-21 12:40:10,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26761 to 26758. [2022-07-21 12:40:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26758 states, 18459 states have (on average 1.3449807681889594) internal successors, (24827), 18818 states have internal predecessors, (24827), 6586 states have call successors, (6586), 1713 states have call predecessors, (6586), 1712 states have return successors, (6585), 6466 states have call predecessors, (6585), 6585 states have call successors, (6585) [2022-07-21 12:40:10,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26758 states to 26758 states and 37998 transitions. [2022-07-21 12:40:10,869 INFO L78 Accepts]: Start accepts. Automaton has 26758 states and 37998 transitions. Word has length 78 [2022-07-21 12:40:10,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:10,870 INFO L495 AbstractCegarLoop]: Abstraction has 26758 states and 37998 transitions. [2022-07-21 12:40:10,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:10,870 INFO L276 IsEmpty]: Start isEmpty. Operand 26758 states and 37998 transitions. [2022-07-21 12:40:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-21 12:40:10,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:10,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:10,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:11,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:11,090 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:11,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:11,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1123073277, now seen corresponding path program 1 times [2022-07-21 12:40:11,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:11,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782281410] [2022-07-21 12:40:11,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:11,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:11,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:11,097 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:11,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-07-21 12:40:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:12,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2159 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:40:12,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 12:40:12,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:12,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:12,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782281410] [2022-07-21 12:40:12,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782281410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:12,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:12,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:40:12,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552563773] [2022-07-21 12:40:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:40:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:40:12,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:12,930 INFO L87 Difference]: Start difference. First operand 26758 states and 37998 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:15,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:15,061 INFO L93 Difference]: Finished difference Result 73025 states and 103408 transitions. [2022-07-21 12:40:15,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:40:15,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 84 [2022-07-21 12:40:15,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:15,408 INFO L225 Difference]: With dead ends: 73025 [2022-07-21 12:40:15,408 INFO L226 Difference]: Without dead ends: 46273 [2022-07-21 12:40:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:15,550 INFO L413 NwaCegarLoop]: 4496 mSDtfsCounter, 2321 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2321 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:15,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2321 Valid, 7459 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-21 12:40:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46273 states. [2022-07-21 12:40:17,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46273 to 46254. [2022-07-21 12:40:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46254 states, 31867 states have (on average 1.3421721530109518) internal successors, (42771), 32490 states have internal predecessors, (42771), 11306 states have call successors, (11306), 3081 states have call predecessors, (11306), 3080 states have return successors, (11305), 11082 states have call predecessors, (11305), 11305 states have call successors, (11305) [2022-07-21 12:40:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46254 states to 46254 states and 65382 transitions. [2022-07-21 12:40:18,174 INFO L78 Accepts]: Start accepts. Automaton has 46254 states and 65382 transitions. Word has length 84 [2022-07-21 12:40:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:18,174 INFO L495 AbstractCegarLoop]: Abstraction has 46254 states and 65382 transitions. [2022-07-21 12:40:18,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-07-21 12:40:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 46254 states and 65382 transitions. [2022-07-21 12:40:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 12:40:18,177 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:18,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:18,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:18,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:18,391 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:18,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:18,392 INFO L85 PathProgramCache]: Analyzing trace with hash -480450612, now seen corresponding path program 1 times [2022-07-21 12:40:18,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:18,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673516706] [2022-07-21 12:40:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:18,395 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:18,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:18,397 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:18,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-07-21 12:40:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:19,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2182 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 12:40:19,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 12:40:20,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:20,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:20,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673516706] [2022-07-21 12:40:20,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673516706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:20,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:20,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 12:40:20,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265879835] [2022-07-21 12:40:20,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:20,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 12:40:20,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:20,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 12:40:20,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:20,189 INFO L87 Difference]: Start difference. First operand 46254 states and 65382 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 12:40:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:23,774 INFO L93 Difference]: Finished difference Result 128503 states and 180912 transitions. [2022-07-21 12:40:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 12:40:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 87 [2022-07-21 12:40:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:24,247 INFO L225 Difference]: With dead ends: 128503 [2022-07-21 12:40:24,247 INFO L226 Difference]: Without dead ends: 82255 [2022-07-21 12:40:24,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 12:40:24,371 INFO L413 NwaCegarLoop]: 3477 mSDtfsCounter, 2604 mSDsluCounter, 2891 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2604 SdHoareTripleChecker+Valid, 6368 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2604 Valid, 6368 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-21 12:40:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82255 states. [2022-07-21 12:40:27,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82255 to 82248. [2022-07-21 12:40:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82248 states, 56676 states have (on average 1.3360681770061402) internal successors, (75723), 57787 states have internal predecessors, (75723), 19888 states have call successors, (19888), 5684 states have call predecessors, (19888), 5683 states have return successors, (19887), 19464 states have call predecessors, (19887), 19887 states have call successors, (19887) [2022-07-21 12:40:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82248 states to 82248 states and 115498 transitions. [2022-07-21 12:40:27,604 INFO L78 Accepts]: Start accepts. Automaton has 82248 states and 115498 transitions. Word has length 87 [2022-07-21 12:40:27,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:27,605 INFO L495 AbstractCegarLoop]: Abstraction has 82248 states and 115498 transitions. [2022-07-21 12:40:27,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-07-21 12:40:27,605 INFO L276 IsEmpty]: Start isEmpty. Operand 82248 states and 115498 transitions. [2022-07-21 12:40:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 12:40:27,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:27,633 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:27,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:27,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:27,848 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:27,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:27,849 INFO L85 PathProgramCache]: Analyzing trace with hash -158492693, now seen corresponding path program 1 times [2022-07-21 12:40:27,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:27,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59101269] [2022-07-21 12:40:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:27,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:27,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:27,854 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:27,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-07-21 12:40:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 12:40:29,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-21 12:40:29,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:29,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:29,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59101269] [2022-07-21 12:40:29,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59101269] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:29,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:29,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 12:40:29,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865737905] [2022-07-21 12:40:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 12:40:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 12:40:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 12:40:29,602 INFO L87 Difference]: Start difference. First operand 82248 states and 115498 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:40:32,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:32,405 INFO L93 Difference]: Finished difference Result 164682 states and 231309 transitions. [2022-07-21 12:40:32,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 12:40:32,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 205 [2022-07-21 12:40:32,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:33,288 INFO L225 Difference]: With dead ends: 164682 [2022-07-21 12:40:33,288 INFO L226 Difference]: Without dead ends: 82438 [2022-07-21 12:40:33,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 12:40:33,549 INFO L413 NwaCegarLoop]: 2999 mSDtfsCounter, 2 mSDsluCounter, 5995 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8994 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:33,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8994 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 12:40:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82438 states. [2022-07-21 12:40:36,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82438 to 82438. [2022-07-21 12:40:37,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82438 states, 56803 states have (on average 1.3364258929986093) internal successors, (75913), 57977 states have internal predecessors, (75913), 19888 states have call successors, (19888), 5684 states have call predecessors, (19888), 5746 states have return successors, (19950), 19464 states have call predecessors, (19950), 19887 states have call successors, (19950) [2022-07-21 12:40:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82438 states to 82438 states and 115751 transitions. [2022-07-21 12:40:37,586 INFO L78 Accepts]: Start accepts. Automaton has 82438 states and 115751 transitions. Word has length 205 [2022-07-21 12:40:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:37,587 INFO L495 AbstractCegarLoop]: Abstraction has 82438 states and 115751 transitions. [2022-07-21 12:40:37,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:40:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 82438 states and 115751 transitions. [2022-07-21 12:40:37,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 12:40:37,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:37,623 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:37,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:37,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:37,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:37,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1108122258, now seen corresponding path program 1 times [2022-07-21 12:40:37,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:37,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458567607] [2022-07-21 12:40:37,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 12:40:37,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:37,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:37,850 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:37,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-07-21 12:40:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 12:40:39,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 12:40:39,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2022-07-21 12:40:39,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 12:40:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2022-07-21 12:40:40,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:40,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458567607] [2022-07-21 12:40:40,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458567607] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 12:40:40,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 12:40:40,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 12:40:40,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143501586] [2022-07-21 12:40:40,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 12:40:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 12:40:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 12:40:40,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:40:40,575 INFO L87 Difference]: Start difference. First operand 82438 states and 115751 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 12:40:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:44,949 INFO L93 Difference]: Finished difference Result 165318 states and 232262 transitions. [2022-07-21 12:40:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 12:40:44,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 206 [2022-07-21 12:40:44,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:45,512 INFO L225 Difference]: With dead ends: 165318 [2022-07-21 12:40:45,512 INFO L226 Difference]: Without dead ends: 82882 [2022-07-21 12:40:46,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-07-21 12:40:46,034 INFO L413 NwaCegarLoop]: 3000 mSDtfsCounter, 11 mSDsluCounter, 11990 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 14990 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:46,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 14990 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 12:40:46,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82882 states. [2022-07-21 12:40:49,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82882 to 82630. [2022-07-21 12:40:49,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82630 states, 56995 states have (on average 1.3386086498815686) internal successors, (76294), 58169 states have internal predecessors, (76294), 19888 states have call successors, (19888), 5684 states have call predecessors, (19888), 5746 states have return successors, (19950), 19464 states have call predecessors, (19950), 19887 states have call successors, (19950) [2022-07-21 12:40:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82630 states to 82630 states and 116132 transitions. [2022-07-21 12:40:49,569 INFO L78 Accepts]: Start accepts. Automaton has 82630 states and 116132 transitions. Word has length 206 [2022-07-21 12:40:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:40:49,571 INFO L495 AbstractCegarLoop]: Abstraction has 82630 states and 116132 transitions. [2022-07-21 12:40:49,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 8 states have internal predecessors, (103), 2 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-21 12:40:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 82630 states and 116132 transitions. [2022-07-21 12:40:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-21 12:40:49,607 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:40:49,607 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:40:49,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-07-21 12:40:49,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:40:49,828 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:40:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:40:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1603045803, now seen corresponding path program 2 times [2022-07-21 12:40:49,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:40:49,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923341731] [2022-07-21 12:40:49,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 12:40:49,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:40:49,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:40:49,832 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:40:49,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-07-21 12:40:51,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 12:40:51,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:40:51,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 12:40:51,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:40:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-07-21 12:40:51,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:40:51,815 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:40:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923341731] [2022-07-21 12:40:51,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923341731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:40:51,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:40:51,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 12:40:51,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756704191] [2022-07-21 12:40:51,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:40:51,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 12:40:51,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:40:51,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 12:40:51,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 12:40:51,818 INFO L87 Difference]: Start difference. First operand 82630 states and 116132 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:40:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 12:40:55,943 INFO L93 Difference]: Finished difference Result 165569 states and 232734 transitions. [2022-07-21 12:40:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 12:40:55,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 209 [2022-07-21 12:40:55,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 12:40:56,468 INFO L225 Difference]: With dead ends: 165569 [2022-07-21 12:40:56,469 INFO L226 Difference]: Without dead ends: 82630 [2022-07-21 12:40:56,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 12:40:56,804 INFO L413 NwaCegarLoop]: 2994 mSDtfsCounter, 6 mSDsluCounter, 11948 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14942 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 12:40:56,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 14942 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 12:40:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82630 states. [2022-07-21 12:40:59,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82630 to 82630. [2022-07-21 12:40:59,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82630 states, 56995 states have (on average 1.3375032897622599) internal successors, (76231), 58169 states have internal predecessors, (76231), 19888 states have call successors, (19888), 5684 states have call predecessors, (19888), 5746 states have return successors, (19950), 19464 states have call predecessors, (19950), 19887 states have call successors, (19950) [2022-07-21 12:41:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82630 states to 82630 states and 116069 transitions. [2022-07-21 12:41:00,516 INFO L78 Accepts]: Start accepts. Automaton has 82630 states and 116069 transitions. Word has length 209 [2022-07-21 12:41:00,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 12:41:00,517 INFO L495 AbstractCegarLoop]: Abstraction has 82630 states and 116069 transitions. [2022-07-21 12:41:00,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-21 12:41:00,517 INFO L276 IsEmpty]: Start isEmpty. Operand 82630 states and 116069 transitions. [2022-07-21 12:41:00,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-21 12:41:00,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 12:41:00,542 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 12:41:00,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-07-21 12:41:00,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 12:41:00,764 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 12:41:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 12:41:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash 903816684, now seen corresponding path program 3 times [2022-07-21 12:41:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 12:41:00,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485066642] [2022-07-21 12:41:00,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-21 12:41:00,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 12:41:00,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 12:41:00,767 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 12:41:00,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-07-21 12:41:01,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-21 12:41:01,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 12:41:02,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 2130 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 12:41:02,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 12:41:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 424 trivial. 0 not checked. [2022-07-21 12:41:02,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 12:41:02,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 12:41:02,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485066642] [2022-07-21 12:41:02,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485066642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 12:41:02,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 12:41:02,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 12:41:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997543985] [2022-07-21 12:41:02,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 12:41:02,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 12:41:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 12:41:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 12:41:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 12:41:02,578 INFO L87 Difference]: Start difference. First operand 82630 states and 116069 transitions. Second operand has 7 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13)