./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:36:43,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:36:43,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:36:43,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:36:43,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:36:43,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:36:43,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:36:43,774 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:36:43,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:36:43,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:36:43,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:36:43,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:36:43,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:36:43,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:36:43,792 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:36:43,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:36:43,797 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:36:43,799 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:36:43,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:36:43,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:36:43,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:36:43,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:36:43,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:36:43,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:36:43,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:36:43,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:36:43,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:36:43,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:36:43,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:36:43,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:36:43,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:36:43,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:36:43,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:36:43,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:36:43,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:36:43,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:36:43,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:36:43,844 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:36:43,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:36:43,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:36:43,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:36:43,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-03 05:36:43,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:36:43,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:36:43,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:36:43,889 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:36:43,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:36:43,889 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:36:43,889 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:36:43,890 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:36:43,890 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:36:43,890 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:36:43,890 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:36:43,890 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:36:43,891 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:36:43,891 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:36:43,891 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:36:43,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:36:43,892 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:36:43,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:36:43,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:36:43,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:36:43,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:36:43,893 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:36:43,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:36:43,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:36:43,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:36:43,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:36:43,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:36:43,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:43,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:36:43,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:36:43,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:36:43,896 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:36:43,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:36:43,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:36:43,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:36:43,896 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:36:43,897 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-03 05:36:44,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:36:44,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:36:44,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:36:44,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:36:44,206 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:36:44,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-03 05:36:44,283 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/6b0449a28/7935680a3b1c44cd8f0632bd02b0e0cf/FLAGb84310c72 [2021-11-03 05:36:45,149 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:36:45,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-03 05:36:45,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/6b0449a28/7935680a3b1c44cd8f0632bd02b0e0cf/FLAGb84310c72 [2021-11-03 05:36:45,608 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/6b0449a28/7935680a3b1c44cd8f0632bd02b0e0cf [2021-11-03 05:36:45,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:36:45,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:36:45,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:45,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:36:45,621 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:36:45,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:45" (1/1) ... [2021-11-03 05:36:45,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742c4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:45, skipping insertion in model container [2021-11-03 05:36:45,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:45" (1/1) ... [2021-11-03 05:36:45,633 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:36:45,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:47,280 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-03 05:36:47,713 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.IllegalArgumentException: byte size smaller than 1 makes no sense at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.checkIfNecessaryMemoryModelAdaption(CHandler.java:1054) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:962) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:279) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:177) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:676) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1437) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1381) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1068) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1452) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3247) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2321) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:594) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-03 05:36:47,718 INFO L168 Benchmark]: Toolchain (without parser) took 2104.19 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 74.6 MB in the beginning and 97.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:36:47,721 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 94.3 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:36:47,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2098.90 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 74.4 MB in the beginning and 97.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. [2021-11-03 05:36:47,725 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 94.3 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2098.90 ms. Allocated memory was 123.7 MB in the beginning and 159.4 MB in the end (delta: 35.7 MB). Free memory was 74.4 MB in the beginning and 97.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 30.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: IllegalArgumentException: byte size smaller than 1 makes no sense de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: IllegalArgumentException: byte size smaller than 1 makes no sense: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.preferences.CACSLPreferenceInitializer$MemoryModel.getPreciseEnoughMemoryModelFor(CACSLPreferenceInitializer.java:194) 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=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:36:49,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:36:49,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:36:49,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:36:49,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:36:49,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:36:49,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:36:49,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:36:49,970 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:36:49,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:36:49,979 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:36:49,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:36:49,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:36:49,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:36:49,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:36:49,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:36:49,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:36:49,995 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:36:49,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:36:50,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:36:50,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:36:50,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:36:50,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:36:50,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:36:50,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:36:50,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:36:50,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:36:50,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:36:50,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:36:50,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:36:50,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:36:50,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:36:50,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:36:50,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:36:50,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:36:50,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:36:50,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:36:50,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:36:50,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:36:50,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:36:50,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:36:50,036 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-03 05:36:50,080 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:36:50,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:36:50,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:36:50,082 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:36:50,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:36:50,082 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:36:50,082 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:36:50,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:36:50,083 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:36:50,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:36:50,086 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:36:50,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:36:50,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:36:50,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:36:50,087 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:36:50,087 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:36:50,087 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:36:50,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:36:50,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:36:50,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:36:50,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:36:50,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:36:50,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:36:50,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:50,089 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:36:50,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:36:50,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:36:50,090 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:36:50,090 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:36:50,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:36:50,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:36:50,091 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:36:50,091 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2021-11-03 05:36:50,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:36:50,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:36:50,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:36:50,496 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:36:50,496 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:36:50,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-03 05:36:50,572 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/ab988a1e9/ab7002cdd8f04eaf93c751013e42e726/FLAGf8a0c1a58 [2021-11-03 05:36:51,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:36:51,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-03 05:36:51,545 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/ab988a1e9/ab7002cdd8f04eaf93c751013e42e726/FLAGf8a0c1a58 [2021-11-03 05:36:51,913 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/data/ab988a1e9/ab7002cdd8f04eaf93c751013e42e726 [2021-11-03 05:36:51,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:36:51,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:36:51,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:51,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:36:51,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:36:51,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:51" (1/1) ... [2021-11-03 05:36:51,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1606864c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:51, skipping insertion in model container [2021-11-03 05:36:51,926 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:36:51" (1/1) ... [2021-11-03 05:36:51,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:36:52,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:54,350 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-03 05:36:54,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:54,479 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:36:54,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:36:55,111 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-03 05:36:55,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:55,168 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:36:55,719 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2021-11-03 05:36:55,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:36:55,949 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:36:55,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55 WrapperNode [2021-11-03 05:36:55,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:36:55,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:36:55,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:36:55,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:36:55,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:56,101 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:57,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:36:57,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:36:57,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:36:57,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:36:57,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:57,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:57,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:57,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:58,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:58,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:58,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:58,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:36:58,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:36:58,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:36:58,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:36:58,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (1/1) ... [2021-11-03 05:36:58,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:36:58,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:36:58,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:36:58,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2021-11-03 05:36:58,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-03 05:36:58,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-03 05:36:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-03 05:36:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2021-11-03 05:36:58,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2021-11-03 05:36:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2021-11-03 05:36:58,971 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2021-11-03 05:36:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:36:58,971 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:36:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2021-11-03 05:36:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~C_INT [2021-11-03 05:36:58,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~C_INT [2021-11-03 05:36:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2021-11-03 05:36:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2021-11-03 05:36:58,974 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2021-11-03 05:36:58,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2021-11-03 05:36:58,975 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-03 05:36:58,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:36:58,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:45:08,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:45:08,042 INFO L299 CfgBuilder]: Removed 3636 assume(true) statements. [2021-11-03 05:45:08,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:08 BoogieIcfgContainer [2021-11-03 05:45:08,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:45:08,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:45:08,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:45:08,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:45:08,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:36:51" (1/3) ... [2021-11-03 05:45:08,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b63c10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:08, skipping insertion in model container [2021-11-03 05:45:08,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:36:55" (2/3) ... [2021-11-03 05:45:08,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b63c10f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:45:08, skipping insertion in model container [2021-11-03 05:45:08,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:45:08" (3/3) ... [2021-11-03 05:45:08,063 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2021-11-03 05:45:08,068 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:45:08,068 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-11-03 05:45:08,151 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:45:08,156 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:45:08,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-11-03 05:45:08,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-03 05:45:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-03 05:45:08,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:08,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:45:08,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:45:08,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1704911642, now seen corresponding path program 1 times [2021-11-03 05:45:08,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:08,362 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [738348186] [2021-11-03 05:45:08,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:08,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:08,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:08,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:45:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:10,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:45:10,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:13,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:13,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:17,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:17,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:17,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [738348186] [2021-11-03 05:45:17,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [738348186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:17,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:17,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:45:17,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715468501] [2021-11-03 05:45:17,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:45:17,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:45:17,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:45:17,204 INFO L87 Difference]: Start difference. First operand has 9053 states, 8920 states have (on average 1.537780269058296) internal successors, (13717), 8946 states have internal predecessors, (13717), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:17,533 INFO L93 Difference]: Finished difference Result 18102 states and 27928 transitions. [2021-11-03 05:45:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:45:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-03 05:45:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:17,604 INFO L225 Difference]: With dead ends: 18102 [2021-11-03 05:45:17,605 INFO L226 Difference]: Without dead ends: 9044 [2021-11-03 05:45:17,647 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:45:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9044 states. [2021-11-03 05:45:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9044 to 9044. [2021-11-03 05:45:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9044 states, 8912 states have (on average 1.5263689407540395) internal successors, (13603), 8937 states have internal predecessors, (13603), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-03 05:45:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9044 states to 9044 states and 13811 transitions. [2021-11-03 05:45:17,969 INFO L78 Accepts]: Start accepts. Automaton has 9044 states and 13811 transitions. Word has length 156 [2021-11-03 05:45:17,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:17,970 INFO L470 AbstractCegarLoop]: Abstraction has 9044 states and 13811 transitions. [2021-11-03 05:45:17,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.0) internal successors, (156), 2 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states and 13811 transitions. [2021-11-03 05:45:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-03 05:45:17,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:17,975 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:45:18,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:45:18,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:18,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:45:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2090191094, now seen corresponding path program 1 times [2021-11-03 05:45:18,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:18,192 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453676774] [2021-11-03 05:45:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:18,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:18,194 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:18,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:45:19,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:19,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:45:19,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:23,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:45:26,944 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:26,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453676774] [2021-11-03 05:45:26,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453676774] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:45:26,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:45:26,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:45:26,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889513018] [2021-11-03 05:45:26,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:45:26,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:45:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:45:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:45:26,948 INFO L87 Difference]: Start difference. First operand 9044 states and 13811 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:32,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:45:32,890 INFO L93 Difference]: Finished difference Result 18088 states and 27657 transitions. [2021-11-03 05:45:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:45:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2021-11-03 05:45:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:45:32,953 INFO L225 Difference]: With dead ends: 18088 [2021-11-03 05:45:32,953 INFO L226 Difference]: Without dead ends: 9080 [2021-11-03 05:45:32,982 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:45:33,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2021-11-03 05:45:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 9080. [2021-11-03 05:45:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9080 states, 8948 states have (on average 1.5242512293249888) internal successors, (13639), 8973 states have internal predecessors, (13639), 104 states have call successors, (104), 8 states have call predecessors, (104), 8 states have return successors, (104), 101 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-03 05:45:33,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 13847 transitions. [2021-11-03 05:45:33,244 INFO L78 Accepts]: Start accepts. Automaton has 9080 states and 13847 transitions. Word has length 156 [2021-11-03 05:45:33,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:45:33,245 INFO L470 AbstractCegarLoop]: Abstraction has 9080 states and 13847 transitions. [2021-11-03 05:45:33,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:45:33,246 INFO L276 IsEmpty]: Start isEmpty. Operand 9080 states and 13847 transitions. [2021-11-03 05:45:33,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-03 05:45:33,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:45:33,250 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:45:33,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:45:33,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:45:33,473 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:45:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:45:33,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1811887274, now seen corresponding path program 1 times [2021-11-03 05:45:33,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:45:33,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120812335] [2021-11-03 05:45:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:33,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:45:33,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:45:33,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:45:33,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:45:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:35,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:45:35,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:45:40,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:45:46,011 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:45:46,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:45:46,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120812335] [2021-11-03 05:45:46,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120812335] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:45:46,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [611935108] [2021-11-03 05:45:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:45:46,012 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:45:46,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:45:46,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:45:46,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-03 05:45:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:45:47,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:45:47,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:45:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:45:57,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:46:07,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [611935108] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:07,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:07,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653142076] [2021-11-03 05:46:07,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:07,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:07,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:07,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:07,049 INFO L87 Difference]: Start difference. First operand 9080 states and 13847 transitions. Second operand has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:07,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:07,744 INFO L93 Difference]: Finished difference Result 26671 states and 40786 transitions. [2021-11-03 05:46:07,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:07,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-03 05:46:07,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:07,853 INFO L225 Difference]: With dead ends: 26671 [2021-11-03 05:46:07,853 INFO L226 Difference]: Without dead ends: 17765 [2021-11-03 05:46:07,884 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 764 GetRequests, 757 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:07,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17765 states. [2021-11-03 05:46:08,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17765 to 17651. [2021-11-03 05:46:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17651 states, 17411 states have (on average 1.52863132502441) internal successors, (26615), 17442 states have internal predecessors, (26615), 204 states have call successors, (204), 16 states have call predecessors, (204), 16 states have return successors, (204), 198 states have call predecessors, (204), 204 states have call successors, (204) [2021-11-03 05:46:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17651 states to 17651 states and 27023 transitions. [2021-11-03 05:46:08,381 INFO L78 Accepts]: Start accepts. Automaton has 17651 states and 27023 transitions. Word has length 192 [2021-11-03 05:46:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:08,385 INFO L470 AbstractCegarLoop]: Abstraction has 17651 states and 27023 transitions. [2021-11-03 05:46:08,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.333333333333336) internal successors, (190), 2 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 17651 states and 27023 transitions. [2021-11-03 05:46:08,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-03 05:46:08,390 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:08,391 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:08,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:08,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:08,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:46:08,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:46:08,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash -425252689, now seen corresponding path program 1 times [2021-11-03 05:46:08,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:08,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601454023] [2021-11-03 05:46:08,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:08,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:08,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:08,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:08,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:46:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:10,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:10,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:46:15,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:21,576 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:46:21,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:46:21,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601454023] [2021-11-03 05:46:21,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601454023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:46:21,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1424239157] [2021-11-03 05:46:21,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:21,578 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:21,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:46:21,592 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:46:21,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-03 05:46:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:23,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:46:23,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:46:33,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:46:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:46:43,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1424239157] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:46:43,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:46:43,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [5, 5] total 9 [2021-11-03 05:46:43,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102093801] [2021-11-03 05:46:43,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:46:43,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:46:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:46:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:43,867 INFO L87 Difference]: Start difference. First operand 17651 states and 27023 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:47,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:46:47,195 INFO L93 Difference]: Finished difference Result 52567 states and 80616 transitions. [2021-11-03 05:46:47,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:46:47,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 194 [2021-11-03 05:46:47,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:46:47,341 INFO L225 Difference]: With dead ends: 52567 [2021-11-03 05:46:47,341 INFO L226 Difference]: Without dead ends: 35086 [2021-11-03 05:46:47,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:46:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35086 states. [2021-11-03 05:46:48,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35086 to 35022. [2021-11-03 05:46:48,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35022 states, 34562 states have (on average 1.5304091198426018) internal successors, (52894), 34605 states have internal predecessors, (52894), 408 states have call successors, (408), 32 states have call predecessors, (408), 32 states have return successors, (408), 396 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-03 05:46:48,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35022 states to 35022 states and 53710 transitions. [2021-11-03 05:46:48,440 INFO L78 Accepts]: Start accepts. Automaton has 35022 states and 53710 transitions. Word has length 194 [2021-11-03 05:46:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:46:48,442 INFO L470 AbstractCegarLoop]: Abstraction has 35022 states and 53710 transitions. [2021-11-03 05:46:48,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:46:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 35022 states and 53710 transitions. [2021-11-03 05:46:48,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-03 05:46:48,448 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:46:48,449 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:46:48,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:48,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:46:48,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:46:48,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:46:48,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:46:48,874 INFO L85 PathProgramCache]: Analyzing trace with hash 452915352, now seen corresponding path program 1 times [2021-11-03 05:46:48,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:46:48,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113989860] [2021-11-03 05:46:48,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:46:48,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:46:48,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:46:48,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:46:48,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:46:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:46:51,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:46:51,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:46:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:46:57,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:03,642 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:47:03,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:03,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113989860] [2021-11-03 05:47:03,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [113989860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:03,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1178702701] [2021-11-03 05:47:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:03,661 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:03,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:03,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:03,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 05:47:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:05,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:05,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:47:07,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:47:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1178702701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:07,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:47:07,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446487301] [2021-11-03 05:47:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:47:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:47:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:47:07,765 INFO L87 Difference]: Start difference. First operand 35022 states and 53710 transitions. Second operand has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:09,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:09,248 INFO L93 Difference]: Finished difference Result 100601 states and 154454 transitions. [2021-11-03 05:47:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:47:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 200 [2021-11-03 05:47:09,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:09,738 INFO L225 Difference]: With dead ends: 100601 [2021-11-03 05:47:09,739 INFO L226 Difference]: Without dead ends: 65753 [2021-11-03 05:47:09,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:47:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65753 states. [2021-11-03 05:47:10,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65753 to 35026. [2021-11-03 05:47:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35026 states, 34566 states have (on average 1.530347740554302) internal successors, (52898), 34609 states have internal predecessors, (52898), 408 states have call successors, (408), 32 states have call predecessors, (408), 32 states have return successors, (408), 396 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-03 05:47:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35026 states to 35026 states and 53714 transitions. [2021-11-03 05:47:11,114 INFO L78 Accepts]: Start accepts. Automaton has 35026 states and 53714 transitions. Word has length 200 [2021-11-03 05:47:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:11,115 INFO L470 AbstractCegarLoop]: Abstraction has 35026 states and 53714 transitions. [2021-11-03 05:47:11,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.0) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 35026 states and 53714 transitions. [2021-11-03 05:47:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-03 05:47:11,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:11,121 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:11,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:11,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:11,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:47:11,537 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:47:11,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash 97456377, now seen corresponding path program 1 times [2021-11-03 05:47:11,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:11,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311550674] [2021-11-03 05:47:11,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:11,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:11,544 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:11,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:47:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:14,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:14,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:47:20,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:47:26,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:47:26,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311550674] [2021-11-03 05:47:26,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311550674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:47:26,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1088570039] [2021-11-03 05:47:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:26,581 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:26,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:47:26,581 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:47:26,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-03 05:47:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:29,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1628 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:47:29,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:30,781 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:47:30,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:47:32,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:47:32,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1088570039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:47:32,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:47:32,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-03 05:47:32,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806288922] [2021-11-03 05:47:32,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:47:32,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:47:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:47:32,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:47:32,536 INFO L87 Difference]: Start difference. First operand 35026 states and 53714 transitions. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:43,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:47:43,086 INFO L93 Difference]: Finished difference Result 138686 states and 212968 transitions. [2021-11-03 05:47:43,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:47:43,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-03 05:47:43,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:47:43,600 INFO L225 Difference]: With dead ends: 138686 [2021-11-03 05:47:43,600 INFO L226 Difference]: Without dead ends: 103834 [2021-11-03 05:47:43,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 804 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:47:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103834 states. [2021-11-03 05:47:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103834 to 103726. [2021-11-03 05:47:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103726 states, 102394 states have (on average 1.5327265269449382) internal successors, (156942), 102485 states have internal predecessors, (156942), 1216 states have call successors, (1216), 96 states have call predecessors, (1216), 96 states have return successors, (1216), 1180 states have call predecessors, (1216), 1216 states have call successors, (1216) [2021-11-03 05:47:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103726 states to 103726 states and 159374 transitions. [2021-11-03 05:47:47,252 INFO L78 Accepts]: Start accepts. Automaton has 103726 states and 159374 transitions. Word has length 202 [2021-11-03 05:47:47,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:47:47,252 INFO L470 AbstractCegarLoop]: Abstraction has 103726 states and 159374 transitions. [2021-11-03 05:47:47,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:47:47,253 INFO L276 IsEmpty]: Start isEmpty. Operand 103726 states and 159374 transitions. [2021-11-03 05:47:47,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-03 05:47:47,266 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:47:47,266 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:47:47,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:47:47,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-03 05:47:47,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:47:47,680 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:47:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:47:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1447873219, now seen corresponding path program 1 times [2021-11-03 05:47:47,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:47:47,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788350661] [2021-11-03 05:47:47,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:47:47,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:47:47,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:47:47,684 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:47:47,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:47:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:47:50,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:47:50,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:47:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:47:56,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:48:03,261 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:03,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788350661] [2021-11-03 05:48:03,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788350661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:03,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221561829] [2021-11-03 05:48:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:03,261 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:03,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:03,262 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:03,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-03 05:48:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:06,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:48:06,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:08,014 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:48:08,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:09,511 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:48:09,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [221561829] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:09,511 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:09,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:48:09,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581850924] [2021-11-03 05:48:09,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:09,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:09,513 INFO L87 Difference]: Start difference. First operand 103726 states and 159374 transitions. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:12,801 INFO L93 Difference]: Finished difference Result 283968 states and 436318 transitions. [2021-11-03 05:48:12,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:12,801 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-03 05:48:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:13,434 INFO L225 Difference]: With dead ends: 283968 [2021-11-03 05:48:13,435 INFO L226 Difference]: Without dead ends: 180416 [2021-11-03 05:48:13,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 833 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180416 states. [2021-11-03 05:48:17,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180416 to 180395. [2021-11-03 05:48:17,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180395 states, 178231 states have (on average 1.5329600350107444) internal successors, (273221), 178382 states have internal predecessors, (273221), 1952 states have call successors, (1952), 192 states have call predecessors, (1952), 192 states have return successors, (1952), 1880 states have call predecessors, (1952), 1952 states have call successors, (1952) [2021-11-03 05:48:18,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180395 states to 180395 states and 277125 transitions. [2021-11-03 05:48:18,176 INFO L78 Accepts]: Start accepts. Automaton has 180395 states and 277125 transitions. Word has length 211 [2021-11-03 05:48:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:18,177 INFO L470 AbstractCegarLoop]: Abstraction has 180395 states and 277125 transitions. [2021-11-03 05:48:18,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 180395 states and 277125 transitions. [2021-11-03 05:48:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-03 05:48:18,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:18,187 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:18,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:18,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:18,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:18,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:48:18,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash -201930772, now seen corresponding path program 1 times [2021-11-03 05:48:18,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:18,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556197732] [2021-11-03 05:48:18,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:18,611 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:18,617 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:18,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:48:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:21,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:48:21,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:48:28,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-03 05:48:35,702 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:48:35,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556197732] [2021-11-03 05:48:35,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556197732] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:48:35,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [457282013] [2021-11-03 05:48:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:35,703 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:35,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:48:35,713 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:48:35,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-03 05:48:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:48:38,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:48:38,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:48:40,818 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:48:40,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:48:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:48:42,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [457282013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:48:42,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-03 05:48:42,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-03 05:48:42,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835505975] [2021-11-03 05:48:42,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:48:42,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:48:42,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:48:42,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:42,488 INFO L87 Difference]: Start difference. First operand 180395 states and 277125 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:48:52,532 INFO L93 Difference]: Finished difference Result 412537 states and 633685 transitions. [2021-11-03 05:48:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:48:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-11-03 05:48:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:48:53,095 INFO L225 Difference]: With dead ends: 412537 [2021-11-03 05:48:53,095 INFO L226 Difference]: Without dead ends: 232316 [2021-11-03 05:48:53,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 860 GetRequests, 853 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:48:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232316 states. [2021-11-03 05:48:57,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232316 to 232265. [2021-11-03 05:48:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232265 states, 229291 states have (on average 1.53246747582766) internal successors, (351381), 229468 states have internal predecessors, (351381), 2664 states have call successors, (2664), 290 states have call predecessors, (2664), 290 states have return successors, (2664), 2592 states have call predecessors, (2664), 2664 states have call successors, (2664) [2021-11-03 05:48:58,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232265 states to 232265 states and 356709 transitions. [2021-11-03 05:48:58,592 INFO L78 Accepts]: Start accepts. Automaton has 232265 states and 356709 transitions. Word has length 216 [2021-11-03 05:48:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:48:58,592 INFO L470 AbstractCegarLoop]: Abstraction has 232265 states and 356709 transitions. [2021-11-03 05:48:58,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:48:58,593 INFO L276 IsEmpty]: Start isEmpty. Operand 232265 states and 356709 transitions. [2021-11-03 05:48:58,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-03 05:48:58,605 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:48:58,606 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:48:58,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:48:58,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-03 05:48:59,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:48:59,030 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 17 more)] === [2021-11-03 05:48:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:48:59,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1991627943, now seen corresponding path program 1 times [2021-11-03 05:48:59,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:48:59,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042166442] [2021-11-03 05:48:59,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:48:59,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:48:59,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:48:59,043 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:48:59,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:49:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:02,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:49:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:49:09,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:17,566 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:49:17,566 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:49:17,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042166442] [2021-11-03 05:49:17,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042166442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:49:17,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [704194983] [2021-11-03 05:49:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:17,567 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:49:17,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:49:17,568 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:49:17,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:49:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:21,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:49:21,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:28,505 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:49:28,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-03 05:49:34,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [704194983] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:49:34,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80130687] [2021-11-03 05:49:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:49:34,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:49:34,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:49:34,906 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:49:34,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2586c27-480f-4fdf-b629-53bfae86cac2/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:49:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:49:37,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:49:37,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:49:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:49:40,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:49:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-03 05:49:42,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80130687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:49:42,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-03 05:49:42,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-03 05:49:42,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521652006] [2021-11-03 05:49:42,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:49:42,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:49:42,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:49:42,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:49:42,098 INFO L87 Difference]: Start difference. First operand 232265 states and 356709 transitions. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:49:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:49:46,259 INFO L93 Difference]: Finished difference Result 464404 states and 713290 transitions. [2021-11-03 05:49:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:49:46,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-03 05:49:46,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:49:46,766 INFO L225 Difference]: With dead ends: 464404 [2021-11-03 05:49:46,766 INFO L226 Difference]: Without dead ends: 232313 [2021-11-03 05:49:46,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1392 GetRequests, 1384 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:49:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232313 states.