./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:00:36,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:00:36,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:00:36,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:00:36,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:00:36,185 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:00:36,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:00:36,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:00:36,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:00:36,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:00:36,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:00:36,200 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:00:36,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:00:36,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:00:36,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:00:36,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:00:36,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:00:36,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:00:36,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:00:36,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:00:36,213 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:00:36,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:00:36,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:00:36,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:00:36,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:00:36,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:00:36,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:00:36,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:00:36,231 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:00:36,232 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:00:36,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:00:36,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:00:36,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:00:36,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:00:36,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:00:36,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:00:36,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:00:36,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:00:36,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:00:36,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:00:36,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:00:36,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:00:36,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:00:36,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:00:36,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:00:36,270 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:00:36,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:00:36,271 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:00:36,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:00:36,272 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:00:36,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:00:36,272 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:00:36,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:00:36,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:00:36,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:00:36,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:00:36,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:00:36,274 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:00:36,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:00:36,274 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:00:36,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:00:36,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:00:36,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:00:36,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:00:36,275 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:00:36,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:00:36,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:00:36,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-21 11:00:36,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:00:36,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:00:36,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:00:36,539 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:00:36,539 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:00:36,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-21 11:00:36,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72315d99c/0a0fe969703441a9be5c51562219115f/FLAG17efb0395 [2022-07-21 11:00:37,191 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:00:37,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-21 11:00:37,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72315d99c/0a0fe969703441a9be5c51562219115f/FLAG17efb0395 [2022-07-21 11:00:37,625 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72315d99c/0a0fe969703441a9be5c51562219115f [2022-07-21 11:00:37,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:00:37,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:00:37,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:00:37,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:00:37,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:00:37,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:37" (1/1) ... [2022-07-21 11:00:37,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fba2b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:37, skipping insertion in model container [2022-07-21 11:00:37,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:37" (1/1) ... [2022-07-21 11:00:37,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:00:37,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:00:38,359 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-21 11:00:38,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:38,702 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:00:38,810 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-21 11:00:38,878 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: HeapLValues must be converted to RValue before their value can be queried. at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractAssign(BitabsTranslation.java:517) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.abstractAssginWithBitwiseOp(IntegerTranslation.java:973) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:737) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1397) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:326) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1081) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:334) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1470) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:289) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2361) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:601) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainDispatcher.dispatch(MainDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.performMainRun(MainTranslator.java:244) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:206) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-07-21 11:00:38,886 INFO L158 Benchmark]: Toolchain (without parser) took 1256.07ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 37.6MB in the beginning and 40.4MB in the end (delta: -2.7MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2022-07-21 11:00:38,886 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 11:00:38,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1253.42ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 37.4MB in the beginning and 40.4MB in the end (delta: -2.9MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2022-07-21 11:00:38,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 69.2MB. Free memory was 49.4MB in the beginning and 49.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1253.42ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 37.4MB in the beginning and 40.4MB in the end (delta: -2.9MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: HeapLValues must be converted to RValue before their value can be queried. de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: HeapLValues must be converted to RValue before their value can be queried.: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.HeapLValue.getValue(HeapLValue.java:74) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:00:40,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:00:40,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:00:40,389 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:00:40,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:00:40,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:00:40,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:00:40,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:00:40,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:00:40,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:00:40,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:00:40,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:00:40,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:00:40,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:00:40,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:00:40,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:00:40,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:00:40,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:00:40,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:00:40,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:00:40,414 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:00:40,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:00:40,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:00:40,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:00:40,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:00:40,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:00:40,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:00:40,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:00:40,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:00:40,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:00:40,426 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:00:40,426 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:00:40,427 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:00:40,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:00:40,428 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:00:40,430 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:00:40,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:00:40,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:00:40,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:00:40,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:00:40,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:00:40,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:00:40,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-07-21 11:00:40,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:00:40,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:00:40,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:00:40,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:00:40,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:00:40,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:00:40,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:00:40,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:00:40,461 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:00:40,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:00:40,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:00:40,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:00:40,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:00:40,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:00:40,470 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 11:00:40,471 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 11:00:40,471 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 11:00:40,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:00:40,471 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:00:40,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:00:40,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:00:40,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:00:40,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:00:40,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:00:40,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:00:40,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:00:40,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:00:40,473 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 11:00:40,473 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 11:00:40,473 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:00:40,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:00:40,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:00:40,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 11:00:40,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-07-21 11:00:40,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:00:40,749 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:00:40,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:00:40,752 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:00:40,753 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:00:40,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-21 11:00:40,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee536f2ae/de4513811e394cc79cab4f2ce6b6d171/FLAGb99a96f49 [2022-07-21 11:00:41,445 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:00:41,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-21 11:00:41,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee536f2ae/de4513811e394cc79cab4f2ce6b6d171/FLAGb99a96f49 [2022-07-21 11:00:41,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee536f2ae/de4513811e394cc79cab4f2ce6b6d171 [2022-07-21 11:00:41,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:00:41,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:00:41,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:00:41,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:00:41,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:00:41,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:41" (1/1) ... [2022-07-21 11:00:41,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b07f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:41, skipping insertion in model container [2022-07-21 11:00:41,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:00:41" (1/1) ... [2022-07-21 11:00:41,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:00:41,702 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:00:42,355 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-21 11:00:42,738 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:42,777 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 11:00:42,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:00:42,913 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-21 11:00:43,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:43,020 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:00:43,147 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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-07-21 11:00:43,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:00:43,273 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:00:43,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43 WrapperNode [2022-07-21 11:00:43,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:00:43,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:00:43,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:00:43,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:00:43,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,467 INFO L137 Inliner]: procedures = 198, calls = 1615, calls flagged for inlining = 84, calls inlined = 65, statements flattened = 2837 [2022-07-21 11:00:43,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:00:43,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:00:43,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:00:43,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:00:43,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:00:43,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:00:43,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:00:43,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:00:43,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (1/1) ... [2022-07-21 11:00:43,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:00:43,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:43,637 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 11:00:43,657 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 11:00:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-07-21 11:00:43,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:00:43,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:00:43,670 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-07-21 11:00:43,670 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-07-21 11:00:43,671 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-21 11:00:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-21 11:00:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-07-21 11:00:43,713 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-07-21 11:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:00:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-21 11:00:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-21 11:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2022-07-21 11:00:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2022-07-21 11:00:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2022-07-21 11:00:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2022-07-21 11:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:00:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:00:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:00:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:00:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-07-21 11:00:43,715 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-07-21 11:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-21 11:00:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-21 11:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:00:43,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:00:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 11:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-07-21 11:00:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-07-21 11:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-21 11:00:43,717 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-21 11:00:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2022-07-21 11:00:43,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2022-07-21 11:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-07-21 11:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-07-21 11:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-21 11:00:43,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-07-21 11:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 11:00:43,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-07-21 11:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-07-21 11:00:43,720 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-07-21 11:00:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-07-21 11:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:00:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-21 11:00:43,721 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-21 11:00:43,721 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-07-21 11:00:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-07-21 11:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:00:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-07-21 11:00:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-07-21 11:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:00:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:00:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-07-21 11:00:43,722 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-07-21 11:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2022-07-21 11:00:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2022-07-21 11:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-07-21 11:00:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-07-21 11:00:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-21 11:00:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-21 11:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:00:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:00:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 11:00:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2022-07-21 11:00:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:00:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-07-21 11:00:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-07-21 11:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-21 11:00:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-21 11:00:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-07-21 11:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-07-21 11:00:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-07-21 11:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-07-21 11:00:43,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-07-21 11:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-07-21 11:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:00:43,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:00:43,727 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2022-07-21 11:00:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2022-07-21 11:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-21 11:00:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-21 11:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-07-21 11:00:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-07-21 11:00:43,728 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-07-21 11:00:43,728 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-07-21 11:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 11:00:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 11:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-21 11:00:43,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-21 11:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:00:43,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-07-21 11:00:43,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2022-07-21 11:00:43,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2022-07-21 11:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-07-21 11:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:00:43,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-07-21 11:00:43,732 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-07-21 11:00:43,733 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-07-21 11:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-07-21 11:00:43,734 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-07-21 11:00:43,734 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-07-21 11:00:43,737 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-07-21 11:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-07-21 11:00:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-07-21 11:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-21 11:00:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-21 11:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-07-21 11:00:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-07-21 11:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-07-21 11:00:43,738 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-07-21 11:00:43,738 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-21 11:00:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-21 11:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-21 11:00:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-21 11:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-07-21 11:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 11:00:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 11:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-07-21 11:00:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-07-21 11:00:43,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:00:43,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:00:44,146 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:00:44,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:00:44,660 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:00:50,088 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-21 11:01:22,519 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:01:22,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:01:22,529 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 11:01:22,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:01:22 BoogieIcfgContainer [2022-07-21 11:01:22,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:01:22,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:01:22,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:01:22,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:01:22,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:00:41" (1/3) ... [2022-07-21 11:01:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b60421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:01:22, skipping insertion in model container [2022-07-21 11:01:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:00:43" (2/3) ... [2022-07-21 11:01:22,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b60421 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:01:22, skipping insertion in model container [2022-07-21 11:01:22,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:01:22" (3/3) ... [2022-07-21 11:01:22,537 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-07-21 11:01:22,547 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:01:22,547 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:01:22,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:01:22,607 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@2afd1cfd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@44ca6c41 [2022-07-21 11:01:22,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:01:22,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) [2022-07-21 11:01:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 11:01:22,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:22,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:22,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:22,627 INFO L85 PathProgramCache]: Analyzing trace with hash -753531349, now seen corresponding path program 1 times [2022-07-21 11:01:22,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:22,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417483968] [2022-07-21 11:01:22,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:22,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:22,644 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 11:01:22,649 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 11:01:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:23,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:01:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:23,949 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 11:01:23,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:23,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417483968] [2022-07-21 11:01:23,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417483968] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:23,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:23,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:01:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578312968] [2022-07-21 11:01:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:23,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:01:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:01:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:01:24,002 INFO L87 Difference]: Start difference. First operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:01:24,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:24,327 INFO L93 Difference]: Finished difference Result 1670 states and 2383 transitions. [2022-07-21 11:01:24,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:01:24,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-21 11:01:24,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:24,347 INFO L225 Difference]: With dead ends: 1670 [2022-07-21 11:01:24,347 INFO L226 Difference]: Without dead ends: 824 [2022-07-21 11:01:24,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 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 11:01:24,362 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 2 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3478 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:24,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3478 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:01:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-21 11:01:24,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2022-07-21 11:01:24,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 586 states have (on average 1.3344709897610922) internal successors, (782), 605 states have internal predecessors, (782), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-21 11:01:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1147 transitions. [2022-07-21 11:01:24,455 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1147 transitions. Word has length 28 [2022-07-21 11:01:24,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:24,456 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 1147 transitions. [2022-07-21 11:01:24,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:01:24,457 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1147 transitions. [2022-07-21 11:01:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-21 11:01:24,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:24,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:24,498 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 11:01:24,675 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 11:01:24,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:24,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 65775979, now seen corresponding path program 1 times [2022-07-21 11:01:24,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:24,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466957321] [2022-07-21 11:01:24,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:24,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:24,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:24,681 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 11:01:24,682 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 11:01:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:25,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 11:01:25,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 11:01:26,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:01:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 11:01:26,897 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466957321] [2022-07-21 11:01:26,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466957321] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:01:26,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:01:26,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-07-21 11:01:26,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492063571] [2022-07-21 11:01:26,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:01:26,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:01:26,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:26,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:01:26,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:01:26,899 INFO L87 Difference]: Start difference. First operand 824 states and 1147 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:27,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:27,625 INFO L93 Difference]: Finished difference Result 1644 states and 2291 transitions. [2022-07-21 11:01:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:01:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2022-07-21 11:01:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:27,631 INFO L225 Difference]: With dead ends: 1644 [2022-07-21 11:01:27,631 INFO L226 Difference]: Without dead ends: 827 [2022-07-21 11:01:27,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:01:27,634 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 11 mSDsluCounter, 3430 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4574 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:27,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4574 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 11:01:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-07-21 11:01:27,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 827. [2022-07-21 11:01:27,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 589 states have (on average 1.33276740237691) internal successors, (785), 608 states have internal predecessors, (785), 185 states have call successors, (185), 53 states have call predecessors, (185), 52 states have return successors, (180), 177 states have call predecessors, (180), 180 states have call successors, (180) [2022-07-21 11:01:27,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1150 transitions. [2022-07-21 11:01:27,655 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1150 transitions. Word has length 29 [2022-07-21 11:01:27,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:27,655 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1150 transitions. [2022-07-21 11:01:27,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1150 transitions. [2022-07-21 11:01:27,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 11:01:27,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:27,657 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 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 11:01:27,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:27,883 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 11:01:27,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:27,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 755291691, now seen corresponding path program 2 times [2022-07-21 11:01:27,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:27,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710695554] [2022-07-21 11:01:27,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 11:01:27,887 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:27,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:27,888 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 11:01:27,890 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 11:01:28,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-21 11:01:28,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 11:01:28,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2191 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:28,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 11:01:29,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:29,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710695554] [2022-07-21 11:01:29,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710695554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:29,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:29,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:01:29,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3858750] [2022-07-21 11:01:29,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:29,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:29,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:29,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:29,064 INFO L87 Difference]: Start difference. First operand 827 states and 1150 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:01:31,229 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:01:31,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:31,536 INFO L93 Difference]: Finished difference Result 2428 states and 3388 transitions. [2022-07-21 11:01:31,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:31,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2022-07-21 11:01:31,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:31,545 INFO L225 Difference]: With dead ends: 2428 [2022-07-21 11:01:31,545 INFO L226 Difference]: Without dead ends: 1616 [2022-07-21 11:01:31,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 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 11:01:31,551 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 1104 mSDsluCounter, 1127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 2459 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:31,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 2459 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-07-21 11:01:31,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2022-07-21 11:01:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1616. [2022-07-21 11:01:31,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3330434782608696) internal successors, (1533), 1184 states have internal predecessors, (1533), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-21 11:01:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2252 transitions. [2022-07-21 11:01:31,595 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2252 transitions. Word has length 32 [2022-07-21 11:01:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:31,595 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2252 transitions. [2022-07-21 11:01:31,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 11:01:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2252 transitions. [2022-07-21 11:01:31,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 11:01:31,600 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:31,601 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:31,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:31,823 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 11:01:31,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:31,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:31,824 INFO L85 PathProgramCache]: Analyzing trace with hash -398706385, now seen corresponding path program 1 times [2022-07-21 11:01:31,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794323590] [2022-07-21 11:01:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:31,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:31,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:31,827 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 11:01:31,829 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 11:01:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:32,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:32,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:32,951 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 11:01:32,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:32,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:32,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794323590] [2022-07-21 11:01:32,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794323590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:32,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:32,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:01:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962859721] [2022-07-21 11:01:32,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:32,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:32,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:32,959 INFO L87 Difference]: Start difference. First operand 1616 states and 2252 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:33,228 INFO L93 Difference]: Finished difference Result 1642 states and 2284 transitions. [2022-07-21 11:01:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:33,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-21 11:01:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:33,235 INFO L225 Difference]: With dead ends: 1642 [2022-07-21 11:01:33,236 INFO L226 Difference]: Without dead ends: 1629 [2022-07-21 11:01:33,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 11:01:33,237 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1141 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:33,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 1177 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 11:01:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-07-21 11:01:33,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1616. [2022-07-21 11:01:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1150 states have (on average 1.3321739130434782) internal successors, (1532), 1184 states have internal predecessors, (1532), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-07-21 11:01:33,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2251 transitions. [2022-07-21 11:01:33,279 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2251 transitions. Word has length 42 [2022-07-21 11:01:33,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:33,280 INFO L495 AbstractCegarLoop]: Abstraction has 1616 states and 2251 transitions. [2022-07-21 11:01:33,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:33,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2251 transitions. [2022-07-21 11:01:33,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 11:01:33,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:33,281 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:33,318 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 11:01:33,499 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 11:01:33,499 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:33,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash -341448083, now seen corresponding path program 1 times [2022-07-21 11:01:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:33,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [174657106] [2022-07-21 11:01:33,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:33,502 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:33,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:33,503 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 11:01:33,504 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 11:01:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:34,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:01:34,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:37,264 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 11:01:37,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:37,265 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:37,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [174657106] [2022-07-21 11:01:37,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [174657106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:37,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:37,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:01:37,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905729130] [2022-07-21 11:01:37,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:37,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:37,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:37,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:37,266 INFO L87 Difference]: Start difference. First operand 1616 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:37,707 INFO L93 Difference]: Finished difference Result 4803 states and 6768 transitions. [2022-07-21 11:01:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:37,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-21 11:01:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:37,721 INFO L225 Difference]: With dead ends: 4803 [2022-07-21 11:01:37,722 INFO L226 Difference]: Without dead ends: 3209 [2022-07-21 11:01:37,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 11:01:37,729 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 1118 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:37,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 2601 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:01:37,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-07-21 11:01:37,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 3199. [2022-07-21 11:01:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3199 states, 2278 states have (on average 1.3318700614574188) internal successors, (3034), 2342 states have internal predecessors, (3034), 716 states have call successors, (716), 205 states have call predecessors, (716), 204 states have return successors, (745), 699 states have call predecessors, (745), 711 states have call successors, (745) [2022-07-21 11:01:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3199 states to 3199 states and 4495 transitions. [2022-07-21 11:01:37,832 INFO L78 Accepts]: Start accepts. Automaton has 3199 states and 4495 transitions. Word has length 42 [2022-07-21 11:01:37,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:37,833 INFO L495 AbstractCegarLoop]: Abstraction has 3199 states and 4495 transitions. [2022-07-21 11:01:37,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3199 states and 4495 transitions. [2022-07-21 11:01:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-21 11:01:37,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:37,834 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:37,874 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 11:01:38,047 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 11:01:38,047 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:38,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1995368413, now seen corresponding path program 1 times [2022-07-21 11:01:38,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:38,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741844954] [2022-07-21 11:01:38,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:38,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:38,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:38,052 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 11:01:38,052 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 11:01:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2280 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:01:39,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:41,746 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 11:01:41,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:41,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:41,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741844954] [2022-07-21 11:01:41,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741844954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:41,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:41,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:01:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690695440] [2022-07-21 11:01:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:41,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:41,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:41,747 INFO L87 Difference]: Start difference. First operand 3199 states and 4495 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:42,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:42,299 INFO L93 Difference]: Finished difference Result 9544 states and 13706 transitions. [2022-07-21 11:01:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:42,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2022-07-21 11:01:42,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:42,369 INFO L225 Difference]: With dead ends: 9544 [2022-07-21 11:01:42,369 INFO L226 Difference]: Without dead ends: 6367 [2022-07-21 11:01:42,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 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 11:01:42,381 INFO L413 NwaCegarLoop]: 1421 mSDtfsCounter, 1120 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:42,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 2545 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:01:42,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6367 states. [2022-07-21 11:01:42,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6367 to 6358. [2022-07-21 11:01:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4527 states have (on average 1.3293571901921803) internal successors, (6018), 4651 states have internal predecessors, (6018), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-21 11:01:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9033 transitions. [2022-07-21 11:01:42,584 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9033 transitions. Word has length 43 [2022-07-21 11:01:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:42,585 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9033 transitions. [2022-07-21 11:01:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9033 transitions. [2022-07-21 11:01:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-21 11:01:42,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:42,587 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:42,626 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 11:01:42,815 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 11:01:42,815 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1727286224, now seen corresponding path program 1 times [2022-07-21 11:01:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:42,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036991015] [2022-07-21 11:01:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:42,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:42,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:42,819 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 11:01:42,820 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 11:01:43,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:43,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:43,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:45,144 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 11:01:45,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:45,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:45,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036991015] [2022-07-21 11:01:45,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036991015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:45,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:45,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:01:45,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209082844] [2022-07-21 11:01:45,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:45,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:45,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:45,146 INFO L87 Difference]: Start difference. First operand 6358 states and 9033 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:45,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:45,360 INFO L93 Difference]: Finished difference Result 6365 states and 9039 transitions. [2022-07-21 11:01:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:45,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-07-21 11:01:45,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:45,390 INFO L225 Difference]: With dead ends: 6365 [2022-07-21 11:01:45,390 INFO L226 Difference]: Without dead ends: 6362 [2022-07-21 11:01:45,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 11:01:45,397 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1117 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:45,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 2546 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:01:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6362 states. [2022-07-21 11:01:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6362 to 6359. [2022-07-21 11:01:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6359 states, 4528 states have (on average 1.3292844522968197) internal successors, (6019), 4652 states have internal predecessors, (6019), 1424 states have call successors, (1424), 407 states have call predecessors, (1424), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-21 11:01:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6359 states to 6359 states and 9034 transitions. [2022-07-21 11:01:45,640 INFO L78 Accepts]: Start accepts. Automaton has 6359 states and 9034 transitions. Word has length 44 [2022-07-21 11:01:45,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:45,641 INFO L495 AbstractCegarLoop]: Abstraction has 6359 states and 9034 transitions. [2022-07-21 11:01:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:45,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6359 states and 9034 transitions. [2022-07-21 11:01:45,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-21 11:01:45,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:45,643 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:45,680 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 11:01:45,858 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 11:01:45,858 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:45,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:45,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2006668090, now seen corresponding path program 1 times [2022-07-21 11:01:45,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74463819] [2022-07-21 11:01:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:45,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:45,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:45,864 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 11:01:45,865 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 11:01:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:46,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2282 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:46,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:48,291 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 11:01:48,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:48,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:48,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74463819] [2022-07-21 11:01:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74463819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:01:48,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860837264] [2022-07-21 11:01:48,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:48,292 INFO L87 Difference]: Start difference. First operand 6359 states and 9034 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:48,414 INFO L93 Difference]: Finished difference Result 6361 states and 9035 transitions. [2022-07-21 11:01:48,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:48,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-07-21 11:01:48,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:48,449 INFO L225 Difference]: With dead ends: 6361 [2022-07-21 11:01:48,449 INFO L226 Difference]: Without dead ends: 6358 [2022-07-21 11:01:48,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 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 11:01:48,455 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 1108 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:48,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1143 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:01:48,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2022-07-21 11:01:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 6358. [2022-07-21 11:01:48,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6358 states, 4528 states have (on average 1.3290636042402826) internal successors, (6018), 4651 states have internal predecessors, (6018), 1423 states have call successors, (1423), 407 states have call predecessors, (1423), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-21 11:01:48,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6358 states to 6358 states and 9032 transitions. [2022-07-21 11:01:48,701 INFO L78 Accepts]: Start accepts. Automaton has 6358 states and 9032 transitions. Word has length 45 [2022-07-21 11:01:48,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:48,702 INFO L495 AbstractCegarLoop]: Abstraction has 6358 states and 9032 transitions. [2022-07-21 11:01:48,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:48,702 INFO L276 IsEmpty]: Start isEmpty. Operand 6358 states and 9032 transitions. [2022-07-21 11:01:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-21 11:01:48,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:48,703 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-07-21 11:01:48,739 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 11:01:48,917 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 11:01:48,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:48,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -2077566477, now seen corresponding path program 1 times [2022-07-21 11:01:48,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:48,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538187409] [2022-07-21 11:01:48,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:48,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:48,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:48,922 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 11:01:48,923 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 11:01:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:50,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:50,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:51,424 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 11:01:51,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:51,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:51,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538187409] [2022-07-21 11:01:51,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538187409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:51,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:51,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 11:01:51,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240652459] [2022-07-21 11:01:51,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:51,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:51,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:51,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:51,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:51,426 INFO L87 Difference]: Start difference. First operand 6358 states and 9032 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:51,518 INFO L93 Difference]: Finished difference Result 6360 states and 9033 transitions. [2022-07-21 11:01:51,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:51,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-07-21 11:01:51,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:51,543 INFO L225 Difference]: With dead ends: 6360 [2022-07-21 11:01:51,544 INFO L226 Difference]: Without dead ends: 6348 [2022-07-21 11:01:51,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 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 11:01:51,550 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 1105 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:51,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:01:51,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6348 states. [2022-07-21 11:01:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6348 to 6348. [2022-07-21 11:01:51,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 4519 states have (on average 1.3288338127904404) internal successors, (6005), 4641 states have internal predecessors, (6005), 1422 states have call successors, (1422), 407 states have call predecessors, (1422), 406 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-21 11:01:51,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9018 transitions. [2022-07-21 11:01:51,844 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9018 transitions. Word has length 46 [2022-07-21 11:01:51,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:51,844 INFO L495 AbstractCegarLoop]: Abstraction has 6348 states and 9018 transitions. [2022-07-21 11:01:51,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 11:01:51,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9018 transitions. [2022-07-21 11:01:51,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 11:01:51,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:51,854 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:51,894 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 11:01:52,079 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 11:01:52,079 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:52,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:52,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1227308281, now seen corresponding path program 1 times [2022-07-21 11:01:52,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:52,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961359013] [2022-07-21 11:01:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:52,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:52,087 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 11:01:52,124 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 11:01:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:53,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:53,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:53,554 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 11:01:53,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:53,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:53,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961359013] [2022-07-21 11:01:53,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961359013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:53,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:53,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:01:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915304897] [2022-07-21 11:01:53,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:53,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:53,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:53,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:53,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:53,557 INFO L87 Difference]: Start difference. First operand 6348 states and 9018 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:54,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:54,239 INFO L93 Difference]: Finished difference Result 12802 states and 18190 transitions. [2022-07-21 11:01:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:54,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-21 11:01:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:54,273 INFO L225 Difference]: With dead ends: 12802 [2022-07-21 11:01:54,273 INFO L226 Difference]: Without dead ends: 6476 [2022-07-21 11:01:54,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 11:01:54,295 INFO L413 NwaCegarLoop]: 1144 mSDtfsCounter, 52 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:54,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2247 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 11:01:54,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2022-07-21 11:01:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 6452. [2022-07-21 11:01:54,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 4622 states have (on average 1.3308091735179577) internal successors, (6151), 4744 states have internal predecessors, (6151), 1422 states have call successors, (1422), 408 states have call predecessors, (1422), 407 states have return successors, (1591), 1395 states have call predecessors, (1591), 1419 states have call successors, (1591) [2022-07-21 11:01:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 9164 transitions. [2022-07-21 11:01:54,571 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 9164 transitions. Word has length 144 [2022-07-21 11:01:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:54,572 INFO L495 AbstractCegarLoop]: Abstraction has 6452 states and 9164 transitions. [2022-07-21 11:01:54,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:01:54,573 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 9164 transitions. [2022-07-21 11:01:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-21 11:01:54,577 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:54,577 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:54,622 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 11:01:54,793 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 11:01:54,793 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash -481170855, now seen corresponding path program 1 times [2022-07-21 11:01:54,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:01:54,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812204484] [2022-07-21 11:01:54,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:01:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:01:54,798 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 11:01:54,799 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 11:01:55,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:56,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:01:56,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 11:01:56,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:56,636 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:01:56,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812204484] [2022-07-21 11:01:56,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812204484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:56,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:56,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:01:56,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159625991] [2022-07-21 11:01:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:01:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:01:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:01:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:01:56,637 INFO L87 Difference]: Start difference. First operand 6452 states and 9164 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 11:01:58,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:01:59,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:59,610 INFO L93 Difference]: Finished difference Result 13274 states and 18828 transitions. [2022-07-21 11:01:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:01:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-07-21 11:01:59,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:59,640 INFO L225 Difference]: With dead ends: 13274 [2022-07-21 11:01:59,641 INFO L226 Difference]: Without dead ends: 6848 [2022-07-21 11:01:59,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 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 11:01:59,664 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 208 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:59,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 2143 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 11:01:59,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6848 states. [2022-07-21 11:01:59,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6848 to 6824. [2022-07-21 11:01:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6824 states, 4946 states have (on average 1.3275374039627983) internal successors, (6566), 5068 states have internal predecessors, (6566), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 439 states have return successors, (1607), 1411 states have call predecessors, (1607), 1435 states have call successors, (1607) [2022-07-21 11:01:59,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6824 states to 6824 states and 9611 transitions. [2022-07-21 11:01:59,944 INFO L78 Accepts]: Start accepts. Automaton has 6824 states and 9611 transitions. Word has length 153 [2022-07-21 11:01:59,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:59,945 INFO L495 AbstractCegarLoop]: Abstraction has 6824 states and 9611 transitions. [2022-07-21 11:01:59,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-21 11:01:59,945 INFO L276 IsEmpty]: Start isEmpty. Operand 6824 states and 9611 transitions. [2022-07-21 11:01:59,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-07-21 11:01:59,949 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:59,949 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:59,992 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 11:02:00,155 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 11:02:00,155 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:00,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:00,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1461989513, now seen corresponding path program 1 times [2022-07-21 11:02:00,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:00,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875910379] [2022-07-21 11:02:00,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:00,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:00,160 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 11:02:00,160 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 11:02:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:01,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2920 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 11:02:01,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:02,528 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 11:02:02,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:02,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:02,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875910379] [2022-07-21 11:02:02,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875910379] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:02,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:02,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:02:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720391375] [2022-07-21 11:02:02,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:02,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:02:02,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:02:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:02:02,530 INFO L87 Difference]: Start difference. First operand 6824 states and 9611 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:02:03,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:03,050 INFO L93 Difference]: Finished difference Result 13686 states and 19630 transitions. [2022-07-21 11:02:03,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:02:03,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2022-07-21 11:02:03,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:03,077 INFO L225 Difference]: With dead ends: 13686 [2022-07-21 11:02:03,077 INFO L226 Difference]: Without dead ends: 6856 [2022-07-21 11:02:03,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:02:03,103 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 0 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4540 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:03,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4540 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:02:03,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2022-07-21 11:02:03,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6856. [2022-07-21 11:02:03,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 4962 states have (on average 1.3264812575574365) internal successors, (6582), 5100 states have internal predecessors, (6582), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1411 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-21 11:02:03,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 9699 transitions. [2022-07-21 11:02:03,390 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 9699 transitions. Word has length 160 [2022-07-21 11:02:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:03,391 INFO L495 AbstractCegarLoop]: Abstraction has 6856 states and 9699 transitions. [2022-07-21 11:02:03,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 11:02:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 9699 transitions. [2022-07-21 11:02:03,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-21 11:02:03,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:03,399 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:03,452 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 11:02:03,611 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 11:02:03,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:03,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:03,612 INFO L85 PathProgramCache]: Analyzing trace with hash -443990667, now seen corresponding path program 1 times [2022-07-21 11:02:03,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:03,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292808156] [2022-07-21 11:02:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:03,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:03,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:03,616 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 11:02:03,617 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 11:02:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:05,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 11:02:05,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:06,443 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 11:02:06,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:06,443 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:06,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292808156] [2022-07-21 11:02:06,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292808156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:06,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:06,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932461347] [2022-07-21 11:02:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:06,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:06,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:06,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:06,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:06,444 INFO L87 Difference]: Start difference. First operand 6856 states and 9699 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:02:09,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:11,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:11,769 INFO L93 Difference]: Finished difference Result 14422 states and 20512 transitions. [2022-07-21 11:02:11,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:02:11,770 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 172 [2022-07-21 11:02:11,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:11,796 INFO L225 Difference]: With dead ends: 14422 [2022-07-21 11:02:11,796 INFO L226 Difference]: Without dead ends: 7592 [2022-07-21 11:02:11,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:02:11,814 INFO L413 NwaCegarLoop]: 1209 mSDtfsCounter, 158 mSDsluCounter, 4682 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 5891 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:11,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 5891 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 2 Unknown, 0 Unchecked, 4.9s Time] [2022-07-21 11:02:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7592 states. [2022-07-21 11:02:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7592 to 6880. [2022-07-21 11:02:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6880 states, 4986 states have (on average 1.3249097472924187) internal successors, (6606), 5116 states have internal predecessors, (6606), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-21 11:02:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6880 states to 6880 states and 9723 transitions. [2022-07-21 11:02:12,115 INFO L78 Accepts]: Start accepts. Automaton has 6880 states and 9723 transitions. Word has length 172 [2022-07-21 11:02:12,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:12,115 INFO L495 AbstractCegarLoop]: Abstraction has 6880 states and 9723 transitions. [2022-07-21 11:02:12,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 5 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:02:12,115 INFO L276 IsEmpty]: Start isEmpty. Operand 6880 states and 9723 transitions. [2022-07-21 11:02:12,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-21 11:02:12,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:12,120 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:02:12,176 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 11:02:12,343 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 11:02:12,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1808771924, now seen corresponding path program 1 times [2022-07-21 11:02:12,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:12,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056275290] [2022-07-21 11:02:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:12,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:12,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:12,348 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 11:02:12,350 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 11:02:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:14,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 2971 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:02:14,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 11:02:14,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:14,508 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056275290] [2022-07-21 11:02:14,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056275290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:14,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:14,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:02:14,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777270084] [2022-07-21 11:02:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:14,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:02:14,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:14,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:02:14,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:02:14,510 INFO L87 Difference]: Start difference. First operand 6880 states and 9723 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:02:16,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:16,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:16,829 INFO L93 Difference]: Finished difference Result 14822 states and 21076 transitions. [2022-07-21 11:02:16,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:02:16,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 178 [2022-07-21 11:02:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:16,859 INFO L225 Difference]: With dead ends: 14822 [2022-07-21 11:02:16,859 INFO L226 Difference]: Without dead ends: 7968 [2022-07-21 11:02:16,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 176 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 11:02:16,877 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 134 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2366 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:16,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2366 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 11:02:16,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2022-07-21 11:02:17,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7056. [2022-07-21 11:02:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7056 states, 5162 states have (on average 1.32932971716389) internal successors, (6862), 5292 states have internal predecessors, (6862), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-21 11:02:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7056 states to 7056 states and 9979 transitions. [2022-07-21 11:02:17,091 INFO L78 Accepts]: Start accepts. Automaton has 7056 states and 9979 transitions. Word has length 178 [2022-07-21 11:02:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:17,092 INFO L495 AbstractCegarLoop]: Abstraction has 7056 states and 9979 transitions. [2022-07-21 11:02:17,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:02:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7056 states and 9979 transitions. [2022-07-21 11:02:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 11:02:17,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:17,097 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:02:17,154 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 11:02:17,311 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 11:02:17,311 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:17,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1797415916, now seen corresponding path program 1 times [2022-07-21 11:02:17,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720966378] [2022-07-21 11:02:17,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:17,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:17,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:17,316 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 11:02:17,317 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 11:02:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:19,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 3004 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:02:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:19,688 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:19,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:19,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:19,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720966378] [2022-07-21 11:02:19,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720966378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:19,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:19,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 11:02:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679640174] [2022-07-21 11:02:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:19,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:02:19,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:19,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:02:19,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 11:02:19,690 INFO L87 Difference]: Start difference. First operand 7056 states and 9979 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:20,055 INFO L93 Difference]: Finished difference Result 14134 states and 20010 transitions. [2022-07-21 11:02:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:02:20,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 182 [2022-07-21 11:02:20,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:20,081 INFO L225 Difference]: With dead ends: 14134 [2022-07-21 11:02:20,082 INFO L226 Difference]: Without dead ends: 7104 [2022-07-21 11:02:20,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 11:02:20,100 INFO L413 NwaCegarLoop]: 1136 mSDtfsCounter, 5 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2269 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:20,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2269 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 11:02:20,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2022-07-21 11:02:20,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 7088. [2022-07-21 11:02:20,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7088 states, 5194 states have (on average 1.3288409703504043) internal successors, (6902), 5324 states have internal predecessors, (6902), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 455 states have return successors, (1679), 1419 states have call predecessors, (1679), 1435 states have call successors, (1679) [2022-07-21 11:02:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7088 states to 7088 states and 10019 transitions. [2022-07-21 11:02:20,295 INFO L78 Accepts]: Start accepts. Automaton has 7088 states and 10019 transitions. Word has length 182 [2022-07-21 11:02:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:20,296 INFO L495 AbstractCegarLoop]: Abstraction has 7088 states and 10019 transitions. [2022-07-21 11:02:20,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 7088 states and 10019 transitions. [2022-07-21 11:02:20,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-21 11:02:20,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:20,303 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:02:20,368 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 11:02:20,517 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 11:02:20,517 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:20,517 INFO L85 PathProgramCache]: Analyzing trace with hash -112961876, now seen corresponding path program 1 times [2022-07-21 11:02:20,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:20,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1747098289] [2022-07-21 11:02:20,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:20,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:20,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:20,522 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 11:02:20,523 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 11:02:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:22,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 11:02:22,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:23,703 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:23,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:23,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:23,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1747098289] [2022-07-21 11:02:23,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1747098289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:23,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:23,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218208612] [2022-07-21 11:02:23,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:23,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:23,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:23,705 INFO L87 Difference]: Start difference. First operand 7088 states and 10019 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:24,990 INFO L93 Difference]: Finished difference Result 15614 states and 22184 transitions. [2022-07-21 11:02:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:02:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2022-07-21 11:02:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:25,017 INFO L225 Difference]: With dead ends: 15614 [2022-07-21 11:02:25,017 INFO L226 Difference]: Without dead ends: 8552 [2022-07-21 11:02:25,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:02:25,034 INFO L413 NwaCegarLoop]: 1313 mSDtfsCounter, 154 mSDsluCounter, 5081 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:25,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 6394 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-21 11:02:25,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2022-07-21 11:02:25,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 7120. [2022-07-21 11:02:25,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7120 states, 5218 states have (on average 1.3273284783441932) internal successors, (6926), 5348 states have internal predecessors, (6926), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-21 11:02:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7120 states to 7120 states and 10051 transitions. [2022-07-21 11:02:25,245 INFO L78 Accepts]: Start accepts. Automaton has 7120 states and 10051 transitions. Word has length 184 [2022-07-21 11:02:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:25,246 INFO L495 AbstractCegarLoop]: Abstraction has 7120 states and 10051 transitions. [2022-07-21 11:02:25,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 7120 states and 10051 transitions. [2022-07-21 11:02:25,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-07-21 11:02:25,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:25,251 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:02:25,311 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 11:02:25,471 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 11:02:25,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:25,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:25,472 INFO L85 PathProgramCache]: Analyzing trace with hash 415048615, now seen corresponding path program 1 times [2022-07-21 11:02:25,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:25,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076510694] [2022-07-21 11:02:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:25,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:25,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:25,476 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 11:02:25,478 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 11:02:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:27,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:02:27,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:28,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:28,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:28,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076510694] [2022-07-21 11:02:28,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076510694] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:02:28,720 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:02:28,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-21 11:02:28,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134795315] [2022-07-21 11:02:28,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:28,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:28,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:28,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:28,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:28,722 INFO L87 Difference]: Start difference. First operand 7120 states and 10051 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:29,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:29,395 INFO L93 Difference]: Finished difference Result 14294 states and 20202 transitions. [2022-07-21 11:02:29,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:02:29,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2022-07-21 11:02:29,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:29,420 INFO L225 Difference]: With dead ends: 14294 [2022-07-21 11:02:29,420 INFO L226 Difference]: Without dead ends: 7200 [2022-07-21 11:02:29,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:29,436 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 29 mSDsluCounter, 2271 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:29,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3410 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-21 11:02:29,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7200 states. [2022-07-21 11:02:29,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7200 to 7160. [2022-07-21 11:02:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7160 states, 5258 states have (on average 1.3263598326359833) internal successors, (6974), 5388 states have internal predecessors, (6974), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-21 11:02:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7160 states to 7160 states and 10099 transitions. [2022-07-21 11:02:29,638 INFO L78 Accepts]: Start accepts. Automaton has 7160 states and 10099 transitions. Word has length 185 [2022-07-21 11:02:29,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:29,638 INFO L495 AbstractCegarLoop]: Abstraction has 7160 states and 10099 transitions. [2022-07-21 11:02:29,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-21 11:02:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7160 states and 10099 transitions. [2022-07-21 11:02:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-21 11:02:29,644 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:29,644 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:29,705 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 11:02:29,871 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 11:02:29,872 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:29,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:29,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1423043673, now seen corresponding path program 1 times [2022-07-21 11:02:29,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:29,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198726907] [2022-07-21 11:02:29,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:29,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:29,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:29,876 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 11:02:29,878 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 11:02:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:32,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 3012 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 11:02:32,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:33,552 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:33,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-21 11:02:35,934 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:35,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198726907] [2022-07-21 11:02:35,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198726907] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:02:35,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:02:35,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-21 11:02:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331842700] [2022-07-21 11:02:35,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:35,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 11:02:35,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 11:02:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:02:35,936 INFO L87 Difference]: Start difference. First operand 7160 states and 10099 transitions. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 11:02:40,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:40,489 INFO L93 Difference]: Finished difference Result 17198 states and 24474 transitions. [2022-07-21 11:02:40,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 11:02:40,490 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 187 [2022-07-21 11:02:40,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:40,520 INFO L225 Difference]: With dead ends: 17198 [2022-07-21 11:02:40,520 INFO L226 Difference]: Without dead ends: 10064 [2022-07-21 11:02:40,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:02:40,538 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 323 mSDsluCounter, 9955 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 11454 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:40,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 11454 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 11:02:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10064 states. [2022-07-21 11:02:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10064 to 7152. [2022-07-21 11:02:40,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7152 states, 5250 states have (on average 1.326857142857143) internal successors, (6966), 5380 states have internal predecessors, (6966), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-21 11:02:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 10091 transitions. [2022-07-21 11:02:40,806 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 10091 transitions. Word has length 187 [2022-07-21 11:02:40,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:40,807 INFO L495 AbstractCegarLoop]: Abstraction has 7152 states and 10091 transitions. [2022-07-21 11:02:40,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 10 states have internal predecessors, (124), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 11:02:40,807 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 10091 transitions. [2022-07-21 11:02:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-21 11:02:40,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:40,813 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:40,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:41,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:02:41,031 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:41,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:41,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1679269715, now seen corresponding path program 1 times [2022-07-21 11:02:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:41,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480157974] [2022-07-21 11:02:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:41,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:41,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:41,036 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:02:41,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-07-21 11:02:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:43,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 11:02:43,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-21 11:02:44,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:02:44,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 11:02:44,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480157974] [2022-07-21 11:02:44,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480157974] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:44,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:44,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:44,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640432895] [2022-07-21 11:02:44,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:44,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:44,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 11:02:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:44,402 INFO L87 Difference]: Start difference. First operand 7152 states and 10091 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 11:02:46,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:50,956 INFO L93 Difference]: Finished difference Result 18160 states and 25375 transitions. [2022-07-21 11:02:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 11:02:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 201 [2022-07-21 11:02:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:50,988 INFO L225 Difference]: With dead ends: 18160 [2022-07-21 11:02:50,988 INFO L226 Difference]: Without dead ends: 11034 [2022-07-21 11:02:51,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:02:51,006 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 624 mSDsluCounter, 5506 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 7113 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:51,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 7113 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 11:02:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11034 states. [2022-07-21 11:02:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11034 to 7184. [2022-07-21 11:02:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7184 states, 5282 states have (on average 1.324876940552821) internal successors, (6998), 5412 states have internal predecessors, (6998), 1438 states have call successors, (1438), 440 states have call predecessors, (1438), 463 states have return successors, (1687), 1427 states have call predecessors, (1687), 1435 states have call successors, (1687) [2022-07-21 11:02:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 10123 transitions. [2022-07-21 11:02:51,266 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 10123 transitions. Word has length 201 [2022-07-21 11:02:51,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:51,268 INFO L495 AbstractCegarLoop]: Abstraction has 7184 states and 10123 transitions. [2022-07-21 11:02:51,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-21 11:02:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 10123 transitions. [2022-07-21 11:02:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-07-21 11:02:51,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:51,272 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:02:51,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:51,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 11:02:51,484 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 399406037, now seen corresponding path program 1 times [2022-07-21 11:02:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 11:02:51,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897237163] [2022-07-21 11:02:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:51,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 11:02:51,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 11:02:51,489 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 11:02:51,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process