./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW --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 32bit --witnessprinter.graph.data.programhash b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:39:15,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:39:15,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:39:15,746 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:39:15,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:39:15,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:39:15,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:39:15,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:39:15,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:39:15,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:39:15,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:39:15,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:39:15,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:39:15,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:39:15,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:39:15,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:39:15,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:39:15,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:39:15,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:39:15,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:39:15,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:39:15,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:39:15,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:39:15,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:39:15,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:39:15,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:39:15,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:39:15,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:39:15,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:39:15,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:39:15,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:39:15,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:39:15,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:39:15,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:39:15,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:39:15,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:39:15,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:39:15,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:39:15,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:39:15,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:39:15,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:39:15,792 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:39:15,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:39:15,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:39:15,833 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:39:15,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:39:15,834 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:39:15,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:39:15,835 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:39:15,835 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:39:15,836 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:39:15,836 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:39:15,837 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:39:15,837 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:39:15,837 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:39:15,837 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:39:15,838 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:39:15,838 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:39:15,838 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:39:15,839 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:39:15,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:39:15,840 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:39:15,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:39:15,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:39:15,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:39:15,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:39:15,841 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:39:15,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:39:15,842 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:39:15,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:39:15,842 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:39:15,842 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:39:15,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:39:15,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:39:15,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:39:15,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:39:15,844 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:39:15,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:39:15,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:39:15,845 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:39:15,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:39:15,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:39:15,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:39:15,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2022-11-23 13:39:16,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:39:16,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:39:16,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:39:16,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:39:16,181 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:39:16,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-11-23 13:39:19,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:39:19,804 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:39:19,805 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-11-23 13:39:19,838 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/fde61e1fc/6c6ad079dbc14d6db8fc90bc49ec255c/FLAGf801da399 [2022-11-23 13:39:19,856 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/fde61e1fc/6c6ad079dbc14d6db8fc90bc49ec255c [2022-11-23 13:39:19,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:39:19,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:39:19,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:39:19,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:39:19,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:39:19,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:19" (1/1) ... [2022-11-23 13:39:19,874 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49f9628b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:19, skipping insertion in model container [2022-11-23 13:39:19,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:39:19" (1/1) ... [2022-11-23 13:39:19,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:39:19,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:39:20,153 WARN L237 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-11-23 13:39:21,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:39:21,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:39:21,416 WARN L237 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-11-23 13:39:21,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:39:21,820 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:39:21,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21 WrapperNode [2022-11-23 13:39:21,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:39:21,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:39:21,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:39:21,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:39:21,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:21,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,052 INFO L138 Inliner]: procedures = 474, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 1020 [2022-11-23 13:39:22,059 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:39:22,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:39:22,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:39:22,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:39:22,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,189 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:39:22,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:39:22,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:39:22,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:39:22,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (1/1) ... [2022-11-23 13:39:22,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:39:22,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:39:22,250 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:39:22,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:39:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2022-11-23 13:39:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2022-11-23 13:39:22,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:39:22,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2022-11-23 13:39:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:39:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:39:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:39:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:39:22,300 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:39:22,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:39:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2022-11-23 13:39:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2022-11-23 13:39:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2022-11-23 13:39:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 13:39:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 13:39:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:39:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2022-11-23 13:39:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2022-11-23 13:39:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:39:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:39:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:39:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:39:22,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2022-11-23 13:39:22,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2022-11-23 13:39:22,304 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-23 13:39:22,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-23 13:39:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2022-11-23 13:39:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2022-11-23 13:39:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:39:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:39:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2022-11-23 13:39:22,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2022-11-23 13:39:22,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:39:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:39:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:39:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 13:39:22,306 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 13:39:22,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:39:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:39:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 13:39:22,307 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 13:39:22,307 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-11-23 13:39:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-11-23 13:39:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 13:39:22,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2022-11-23 13:39:22,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:39:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2022-11-23 13:39:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2022-11-23 13:39:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 13:39:22,309 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 13:39:22,309 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 13:39:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 13:39:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-23 13:39:22,310 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-23 13:39:22,310 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2022-11-23 13:39:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2022-11-23 13:39:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2022-11-23 13:39:22,311 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2022-11-23 13:39:22,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 13:39:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2022-11-23 13:39:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2022-11-23 13:39:22,312 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2022-11-23 13:39:22,312 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2022-11-23 13:39:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-23 13:39:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2022-11-23 13:39:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:39:22,313 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:39:22,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 13:39:22,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 13:39:22,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:39:22,732 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:39:22,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:39:24,648 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:39:24,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:39:24,938 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 13:39:24,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:24 BoogieIcfgContainer [2022-11-23 13:39:24,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:39:24,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:39:24,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:39:24,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:39:24,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:39:19" (1/3) ... [2022-11-23 13:39:24,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1fa3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:24, skipping insertion in model container [2022-11-23 13:39:24,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:39:21" (2/3) ... [2022-11-23 13:39:24,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1fa3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:39:24, skipping insertion in model container [2022-11-23 13:39:24,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:24" (3/3) ... [2022-11-23 13:39:24,949 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb.i [2022-11-23 13:39:24,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:39:24,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:39:25,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:39:25,028 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ebf3af1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:39:25,028 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:39:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 166 states have internal predecessors, (216), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-23 13:39:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:39:25,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:25,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:39:25,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:39:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -836181821, now seen corresponding path program 1 times [2022-11-23 13:39:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:25,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897931097] [2022-11-23 13:39:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:25,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:25,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:39:25,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:25,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897931097] [2022-11-23 13:39:25,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897931097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:39:25,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:39:25,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:39:25,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334836089] [2022-11-23 13:39:25,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:39:25,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:39:25,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:39:25,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:39:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:25,701 INFO L87 Difference]: Start difference. First operand has 265 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 166 states have internal predecessors, (216), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 13:39:26,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:39:26,826 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2022-11-23 13:39:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:39:26,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-23 13:39:26,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:39:26,840 INFO L225 Difference]: With dead ends: 528 [2022-11-23 13:39:26,840 INFO L226 Difference]: Without dead ends: 261 [2022-11-23 13:39:26,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:39:26,848 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 0 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:39:26,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 13:39:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-23 13:39:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2022-11-23 13:39:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 158 states have (on average 1.3417721518987342) internal successors, (212), 165 states have internal predecessors, (212), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:39:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 363 transitions. [2022-11-23 13:39:26,915 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 363 transitions. Word has length 17 [2022-11-23 13:39:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:39:26,916 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 363 transitions. [2022-11-23 13:39:26,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 13:39:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 363 transitions. [2022-11-23 13:39:26,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-23 13:39:26,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:39:26,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:39:26,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:39:26,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:39:26,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:39:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 948213367, now seen corresponding path program 1 times [2022-11-23 13:39:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:39:26,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477440548] [2022-11-23 13:39:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:26,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:39:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:27,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:39:27,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:39:27,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477440548] [2022-11-23 13:39:27,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477440548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:39:27,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673575752] [2022-11-23 13:39:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:39:27,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:39:27,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:39:27,235 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:39:27,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:39:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:39:27,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:39:27,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:39:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:39:27,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:39:27,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:39:27,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673575752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:39:27,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1130834241] [2022-11-23 13:39:27,787 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-23 13:39:27,787 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:39:27,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:39:27,802 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:39:27,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:39:28,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 554 treesize of output 456 [2022-11-23 13:39:28,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 106 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 168 [2022-11-23 13:39:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 554 treesize of output 456 [2022-11-23 13:39:28,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:28,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 106 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 168 [2022-11-23 13:39:29,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:39:29,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 253 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 373 treesize of output 379 [2022-11-23 13:39:29,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:29,734 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 53 [2022-11-23 13:39:31,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 13:39:31,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-23 13:39:31,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 13:39:31,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:39:31,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:31,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:31,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:31,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:31,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:31,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:31,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:39:31,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:31,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:31,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:31,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:31,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:32,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:32,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:32,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 231 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 257 [2022-11-23 13:39:32,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:32,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:32,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:32,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:32,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:32,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:32,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:32,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-11-23 13:39:32,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:32,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:33,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 231 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 257 [2022-11-23 13:39:33,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:33,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:33,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:33,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:33,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:33,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:33,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-11-23 13:39:34,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:34,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:34,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:39:34,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:34,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:34,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:34,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:34,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:39:34,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:34,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:34,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:39:34,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:39:34,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:39:34,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:39:35,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:39:35,474 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:39:35,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:35,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 23 [2022-11-23 13:39:37,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2010 treesize of output 2009 [2022-11-23 13:39:37,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2010 treesize of output 2009 [2022-11-23 13:39:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:39:37,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2019 treesize of output 1990 [2022-11-23 13:39:38,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:39:38,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:39:38,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-23 13:39:38,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:39:38,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:39:38,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 13:39:39,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:39:39,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 13:39:39,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:39:40,343 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 165 for LOIs [2022-11-23 13:39:40,369 INFO L197 IcfgInterpreter]: Interpreting procedure spin_lock_init with input of size 770 for LOIs [2022-11-23 13:39:41,162 INFO L197 IcfgInterpreter]: Interpreting procedure zf_readw with input of size 163 for LOIs [2022-11-23 13:39:41,191 INFO L197 IcfgInterpreter]: Interpreting procedure outb with input of size 166 for LOIs [2022-11-23 13:39:41,235 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:39:50,092 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 760 DAG size of output: 664 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:39:58,752 WARN L233 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 770 DAG size of output: 674 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:40:09,945 WARN L233 SmtUtils]: Spent 11.01s on a formula simplification. DAG size of input: 795 DAG size of output: 699 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:40:18,195 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1565#(and (= |~#zf_fops~0.offset| 0) (= 0 ~fixed_cdev_used~0) (= |~#shared_workqueue~0.offset| 0) (= |~#registered_pci_driver~0.offset| 0) (= ~number_request_queue_used~0 0) (= ~zf_action~0 2048) (= |outb_#in~port#1| |outb_~port#1|) (= |~#timer_registered~0.offset| 0) (= |~#global_tty_driver~0.offset| 0) (= |~#zf_timer~0.base| 31) (= 43 |~#shared_workqueue~0.base|) (= ~ddv_ioport_request_len~0 0) (= 2 |outb_#in~byte#1|) (= |~#zf_notifier~0.base| 34) (= ~current_execution_context~0 1) (= ~ddv_ioport_request_start~0 0) (= ~proc_root_driver~0.offset 0) (= ~proc_root_driver~0.base 0) (= |~#registered_pci_driver~0.base| 39) (= |~#zf_is_open~0.offset| 0) (= 42 |~#timer_registered~0.base|) (= 0 |~#fixed_cdev~0.offset|) (= ~number_timer_registered~0 0) (= |~#fixed_request_queue~0.base| 45) (= 28 |~#zf_is_open~0.base|) (= |outb___VERIFIER_assert_#in~x#1.base| 26) (= |~#zf_lock~0.base| 29) (= |outb___VERIFIER_assert_#in~x#1.offset| 0) (= |~#kernel_lock~0.base| 44) (= ~jiffies~0 0) (= |~#registered_irq~0.offset| 0) (= |outb___VERIFIER_assert_~x#1.base| |outb___VERIFIER_assert_#in~x#1.base|) (= ~number_tasklet_registered~0 0) (= |~#zf_info~0.offset| 0) (= |~#kernel_lock~0.offset| 0) (= |~#tasklet_registered~0.offset| 0) (= ~zf_expect_close~0 0) (= 30 |~#zf_port_lock~0.base|) (= |~#zf_info~0.base| 27) (= 32 |~#zf_fops~0.base|) (= |~#fixed_cdev~0.base| 35) (= |~#zf_miscdev~0.offset| 0) (= |~#tasklet_registered~0.base| 41) (= |~#genhd_registered~0.base| 38) (= (select (select |#memory_int| |~#tasklet_registered~0.base|) (+ |~#tasklet_registered~0.offset| 4)) 0) (= |outb___VERIFIER_assert_~expression#1| 0) (= ~next_heartbeat~0 0) (= |outb_#in~byte#1| |outb_~byte#1|) (= 0 |~#cdev_registered~0.offset|) (= |#NULL.offset| 0) (= 536 |outb_#in~port#1|) (= ~nowayout~0 0) (= |~#zf_miscdev~0.base| 33) (= (select (select |#memory_$Pointer$.offset| |~#tasklet_registered~0.base|) |~#tasklet_registered~0.offset|) 0) (= |~#global_tty_driver~0.base| 46) (= |~#zf_lock~0.offset| 0) (= |~#zf_port_lock~0.offset| 0) (= |~#fixed_request_queue~0.offset| 0) (= |outb___VERIFIER_assert_#in~expression#1| |outb___VERIFIER_assert_~expression#1|) (= ~number_cdev_registered~0 0) (= |~#registered_irq~0.base| 40) (= |~#genhd_registered~0.offset| 0) (= ~number_fixed_genhd_used~0 0) (= 0 |~#zf_notifier~0.offset|) (= (select (select |#memory_$Pointer$.base| |~#tasklet_registered~0.base|) |~#tasklet_registered~0.offset|) 0) (<= 0 |#StackHeapBarrier|) (= ~action~0 0) (= |outb___VERIFIER_assert_#in~x#1.offset| |outb___VERIFIER_assert_~x#1.offset|) (= 0 |~#zf_timer~0.offset|) (= |~#cdev_registered~0.base| 36) (= ~number_genhd_registered~0 0) (= |~#fixed_gendisk~0.base| 37) (= |~#fixed_gendisk~0.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-23 13:40:18,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:40:18,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:40:18,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 13:40:18,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188314616] [2022-11-23 13:40:18,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:40:18,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 13:40:18,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:40:18,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 13:40:18,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-23 13:40:18,198 INFO L87 Difference]: Start difference. First operand 261 states and 363 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:40:19,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:40:19,715 INFO L93 Difference]: Finished difference Result 520 states and 725 transitions. [2022-11-23 13:40:19,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:40:19,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2022-11-23 13:40:19,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:40:19,719 INFO L225 Difference]: With dead ends: 520 [2022-11-23 13:40:19,719 INFO L226 Difference]: Without dead ends: 264 [2022-11-23 13:40:19,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2022-11-23 13:40:19,722 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 106 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:40:19,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 867 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 13:40:19,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-23 13:40:19,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2022-11-23 13:40:19,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 161 states have (on average 1.3354037267080745) internal successors, (215), 168 states have internal predecessors, (215), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:40:19,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 366 transitions. [2022-11-23 13:40:19,745 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 366 transitions. Word has length 19 [2022-11-23 13:40:19,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:40:19,745 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 366 transitions. [2022-11-23 13:40:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:40:19,746 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 366 transitions. [2022-11-23 13:40:19,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 13:40:19,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:40:19,747 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:40:19,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 13:40:19,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-23 13:40:19,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:40:19,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:40:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1089620164, now seen corresponding path program 2 times [2022-11-23 13:40:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:40:19,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450709992] [2022-11-23 13:40:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:40:19,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:40:20,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:40:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:40:20,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:40:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450709992] [2022-11-23 13:40:20,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450709992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:40:20,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589335622] [2022-11-23 13:40:20,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:40:20,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:40:20,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:40:20,247 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:40:20,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:40:21,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 13:40:21,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:40:21,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:40:21,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:40:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:40:21,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:40:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:40:21,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589335622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:40:21,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [468050980] [2022-11-23 13:40:21,927 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-23 13:40:21,927 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 13:40:21,928 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 13:40:21,928 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 13:40:21,928 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 13:40:22,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 554 treesize of output 456 [2022-11-23 13:40:22,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 106 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 168 [2022-11-23 13:40:22,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 21 [2022-11-23 13:40:22,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 554 treesize of output 456 [2022-11-23 13:40:22,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:22,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 106 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 168 [2022-11-23 13:40:23,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 253 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 373 treesize of output 379 [2022-11-23 13:40:23,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:23,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 53 [2022-11-23 13:40:24,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-23 13:40:24,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 13:40:24,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-23 13:40:24,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 231 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 257 [2022-11-23 13:40:24,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:24,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:24,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:24,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:24,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:24,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:24,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:24,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:24,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-11-23 13:40:24,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:40:24,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:24,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:24,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:24,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:25,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:25,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:25,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:25,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:40:25,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:25,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:25,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:25,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:25,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:25,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:25,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:25,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:26,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:40:26,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:26,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:26,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:26,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:26,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:26,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:26,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 22 select indices, 22 select index equivalence classes, 231 disjoint index pairs (out of 231 index pairs), introduced 22 new quantified variables, introduced 0 case distinctions, treesize of input 351 treesize of output 257 [2022-11-23 13:40:26,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:26,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2022-11-23 13:40:26,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:26,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:26,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:26,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:26,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:26,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:26,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:26,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:26,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 105 disjoint index pairs (out of 105 index pairs), introduced 15 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 120 [2022-11-23 13:40:27,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:27,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:27,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:27,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:27,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-11-23 13:40:27,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-23 13:40:27,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-23 13:40:27,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-23 13:40:27,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:40:27,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:27,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2022-11-23 13:40:28,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-23 13:40:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 13:40:29,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 2009 treesize of output 1980 [2022-11-23 13:40:29,366 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-23 13:40:29,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 2000 treesize of output 2005 [2022-11-23 13:40:29,526 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-23 13:40:29,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1996 treesize of output 2001 [2022-11-23 13:40:33,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:40:33,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 13:40:33,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2022-11-23 13:40:33,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:40:33,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 13:40:33,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:40:33,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:40:33,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 25 [2022-11-23 13:40:33,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 12 [2022-11-23 13:40:34,752 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 165 for LOIs [2022-11-23 13:40:34,763 INFO L197 IcfgInterpreter]: Interpreting procedure spin_lock_init with input of size 770 for LOIs [2022-11-23 13:40:35,396 INFO L197 IcfgInterpreter]: Interpreting procedure zf_readw with input of size 163 for LOIs [2022-11-23 13:40:35,419 INFO L197 IcfgInterpreter]: Interpreting procedure outb with input of size 166 for LOIs [2022-11-23 13:40:35,457 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 13:40:44,233 WARN L233 SmtUtils]: Spent 8.04s on a formula simplification. DAG size of input: 760 DAG size of output: 664 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:40:52,833 WARN L233 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 770 DAG size of output: 674 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:41:04,222 WARN L233 SmtUtils]: Spent 11.16s on a formula simplification. DAG size of input: 795 DAG size of output: 699 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 13:41:12,428 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2889#(and (= |~#zf_fops~0.offset| 0) (= 0 ~fixed_cdev_used~0) (= |~#shared_workqueue~0.offset| 0) (= |~#registered_pci_driver~0.offset| 0) (= ~number_request_queue_used~0 0) (= ~zf_action~0 2048) (= |outb_#in~port#1| |outb_~port#1|) (= |~#timer_registered~0.offset| 0) (= |~#global_tty_driver~0.offset| 0) (= |~#zf_timer~0.base| 31) (= 43 |~#shared_workqueue~0.base|) (= ~ddv_ioport_request_len~0 0) (= 2 |outb_#in~byte#1|) (= |~#zf_notifier~0.base| 34) (= ~current_execution_context~0 1) (= ~ddv_ioport_request_start~0 0) (= ~proc_root_driver~0.offset 0) (= ~proc_root_driver~0.base 0) (= |~#registered_pci_driver~0.base| 39) (= |~#zf_is_open~0.offset| 0) (= 42 |~#timer_registered~0.base|) (= 0 |~#fixed_cdev~0.offset|) (= ~number_timer_registered~0 0) (= |~#fixed_request_queue~0.base| 45) (= 28 |~#zf_is_open~0.base|) (= |outb___VERIFIER_assert_#in~x#1.base| 26) (= |~#zf_lock~0.base| 29) (= |outb___VERIFIER_assert_#in~x#1.offset| 0) (= |~#kernel_lock~0.base| 44) (= ~jiffies~0 0) (= |~#registered_irq~0.offset| 0) (= |outb___VERIFIER_assert_~x#1.base| |outb___VERIFIER_assert_#in~x#1.base|) (= ~number_tasklet_registered~0 0) (= |~#zf_info~0.offset| 0) (= |~#kernel_lock~0.offset| 0) (= |~#tasklet_registered~0.offset| 0) (= ~zf_expect_close~0 0) (= 30 |~#zf_port_lock~0.base|) (= |~#zf_info~0.base| 27) (= 32 |~#zf_fops~0.base|) (= |~#fixed_cdev~0.base| 35) (= |~#zf_miscdev~0.offset| 0) (= |~#tasklet_registered~0.base| 41) (= |~#genhd_registered~0.base| 38) (= (select (select |#memory_int| |~#tasklet_registered~0.base|) (+ |~#tasklet_registered~0.offset| 4)) 0) (= |outb___VERIFIER_assert_~expression#1| 0) (= ~next_heartbeat~0 0) (= |outb_#in~byte#1| |outb_~byte#1|) (= 0 |~#cdev_registered~0.offset|) (= |#NULL.offset| 0) (= 536 |outb_#in~port#1|) (= ~nowayout~0 0) (= |~#zf_miscdev~0.base| 33) (= (select (select |#memory_$Pointer$.offset| |~#tasklet_registered~0.base|) |~#tasklet_registered~0.offset|) 0) (= |~#global_tty_driver~0.base| 46) (= |~#zf_lock~0.offset| 0) (= |~#zf_port_lock~0.offset| 0) (= |~#fixed_request_queue~0.offset| 0) (= |outb___VERIFIER_assert_#in~expression#1| |outb___VERIFIER_assert_~expression#1|) (= ~number_cdev_registered~0 0) (= |~#registered_irq~0.base| 40) (= |~#genhd_registered~0.offset| 0) (= ~number_fixed_genhd_used~0 0) (= 0 |~#zf_notifier~0.offset|) (= (select (select |#memory_$Pointer$.base| |~#tasklet_registered~0.base|) |~#tasklet_registered~0.offset|) 0) (<= 0 |#StackHeapBarrier|) (= ~action~0 0) (= |outb___VERIFIER_assert_#in~x#1.offset| |outb___VERIFIER_assert_~x#1.offset|) (= 0 |~#zf_timer~0.offset|) (= |~#cdev_registered~0.base| 36) (= ~number_genhd_registered~0 0) (= |~#fixed_gendisk~0.base| 37) (= |~#fixed_gendisk~0.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-23 13:41:12,428 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 13:41:12,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 13:41:12,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-23 13:41:12,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137398538] [2022-11-23 13:41:12,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 13:41:12,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 13:41:12,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:41:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 13:41:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:41:12,431 INFO L87 Difference]: Start difference. First operand 264 states and 366 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:41:14,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:14,242 INFO L93 Difference]: Finished difference Result 526 states and 734 transitions. [2022-11-23 13:41:14,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:41:14,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2022-11-23 13:41:14,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:14,245 INFO L225 Difference]: With dead ends: 526 [2022-11-23 13:41:14,245 INFO L226 Difference]: Without dead ends: 270 [2022-11-23 13:41:14,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:41:14,247 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 424 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:14,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1055 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 13:41:14,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-23 13:41:14,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2022-11-23 13:41:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 167 states have (on average 1.3233532934131738) internal successors, (221), 174 states have internal predecessors, (221), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:41:14,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 372 transitions. [2022-11-23 13:41:14,273 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 372 transitions. Word has length 22 [2022-11-23 13:41:14,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:14,274 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 372 transitions. [2022-11-23 13:41:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:41:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 372 transitions. [2022-11-23 13:41:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 13:41:14,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:14,275 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:14,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:14,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 13:41:14,496 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:14,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:14,497 INFO L85 PathProgramCache]: Analyzing trace with hash 119987548, now seen corresponding path program 3 times [2022-11-23 13:41:14,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:41:14,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680789304] [2022-11-23 13:41:14,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:14,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:41:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:41:14,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:41:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:41:14,877 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 13:41:14,877 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:41:14,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location outbErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:41:14,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:41:14,883 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 13:41:14,887 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:41:15,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:41:15 BoogieIcfgContainer [2022-11-23 13:41:15,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:41:15,018 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:41:15,018 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:41:15,018 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:41:15,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:39:24" (3/4) ... [2022-11-23 13:41:15,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:41:15,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:41:15,026 INFO L158 Benchmark]: Toolchain (without parser) took 115161.82ms. Allocated memory was 249.6MB in the beginning and 841.0MB in the end (delta: 591.4MB). Free memory was 212.7MB in the beginning and 687.0MB in the end (delta: -474.3MB). Peak memory consumption was 120.2MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,026 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 146.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:41:15,027 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1960.50ms. Allocated memory is still 249.6MB. Free memory was 211.7MB in the beginning and 208.0MB in the end (delta: 3.7MB). Peak memory consumption was 108.5MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,027 INFO L158 Benchmark]: Boogie Procedure Inliner took 230.04ms. Allocated memory is still 249.6MB. Free memory was 208.0MB in the beginning and 198.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,028 INFO L158 Benchmark]: Boogie Preprocessor took 155.17ms. Allocated memory is still 249.6MB. Free memory was 198.6MB in the beginning and 190.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,028 INFO L158 Benchmark]: RCFGBuilder took 2725.21ms. Allocated memory was 249.6MB in the beginning and 306.2MB in the end (delta: 56.6MB). Free memory was 190.2MB in the beginning and 183.2MB in the end (delta: 7.0MB). Peak memory consumption was 133.9MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,028 INFO L158 Benchmark]: TraceAbstraction took 110074.59ms. Allocated memory was 306.2MB in the beginning and 841.0MB in the end (delta: 534.8MB). Free memory was 182.2MB in the beginning and 687.0MB in the end (delta: -504.9MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2022-11-23 13:41:15,029 INFO L158 Benchmark]: Witness Printer took 7.72ms. Allocated memory is still 841.0MB. Free memory is still 687.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:41:15,030 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 146.8MB. Free memory is still 90.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1960.50ms. Allocated memory is still 249.6MB. Free memory was 211.7MB in the beginning and 208.0MB in the end (delta: 3.7MB). Peak memory consumption was 108.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 230.04ms. Allocated memory is still 249.6MB. Free memory was 208.0MB in the beginning and 198.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 155.17ms. Allocated memory is still 249.6MB. Free memory was 198.6MB in the beginning and 190.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2725.21ms. Allocated memory was 249.6MB in the beginning and 306.2MB in the end (delta: 56.6MB). Free memory was 190.2MB in the beginning and 183.2MB in the end (delta: 7.0MB). Peak memory consumption was 133.9MB. Max. memory is 16.1GB. * TraceAbstraction took 110074.59ms. Allocated memory was 306.2MB in the beginning and 841.0MB in the end (delta: 534.8MB). Free memory was 182.2MB in the beginning and 687.0MB in the end (delta: -504.9MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Witness Printer took 7.72ms. Allocated memory is still 841.0MB. Free memory is still 687.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 1484. Possible FailurePath: [L20] int current_execution_context; [L31] int (* _ddv_module_init)(void); [L32] void (* _ddv_module_exit)(void); [L232] unsigned long jiffies; [L1474] char _ddv_module_author[] = "Fernando Fuganti "; [L1475] char _ddv_module_description[] = "MachZ ZF-Logic Watchdog driver"; [L1476] char _ddv_module_license[] = "GPL"; [L1478] static int nowayout = 0; [L1479] char _ddv_module_param_nowayout [] = "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"; [L1483-L1487] static struct watchdog_info zf_info = { .options = 0x8000 | 0x0100, .firmware_version = 1, .identity = "ZF-Logic watchdog", }; [L1488] static int action = 0; [L1489] char _ddv_module_param_action [] = "after watchdog resets, generate: 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI"; [L1491] static int zf_action = 0x0800; [L1492] static unsigned long zf_is_open; [L1493] static char zf_expect_close; [L1494] static spinlock_t zf_lock; [L1495] static spinlock_t zf_port_lock; [L1496] static struct timer_list zf_timer; [L1497] static unsigned long next_heartbeat = 0; [L1743-L1750] static const struct file_operations zf_fops = { .owner = ((struct module *) 0), .llseek = no_llseek, .write = zf_write, .ioctl = zf_ioctl, .open = zf_open, .release = zf_close, }; [L1752-L1756] static struct miscdevice zf_miscdev = { .minor = 130, .name = "watchdog", .fops = (struct file_operations *)&zf_fops, }; [L1763-L1765] static struct notifier_block zf_notifier = { .notifier_call = zf_notify_sys, }; [L1845] int (* _ddv_tmp_init)(void) = zf_init; [L1846] void (* _ddv_tmp_exit)(void) = zf_exit; [L1897] struct cdev fixed_cdev[1]; [L1898] int fixed_cdev_used = 0; [L1900] short number_cdev_registered = 0; [L1911] struct ddv_cdev cdev_registered[1]; [L2448] short number_genhd_registered = 0; [L2449] short number_fixed_genhd_used = 0; [L2460] struct gendisk fixed_gendisk[10]; [L2461] struct ddv_genhd genhd_registered[10]; [L2596] struct ddv_pci_driver registered_pci_driver; [L2607] struct registered_irq registered_irq[16]; [L2617] short number_tasklet_registered = 0; [L2624] struct ddv_tasklet tasklet_registered[1]; [L2634] short number_timer_registered = 0; [L2640] struct ddv_timer timer_registered[1]; [L2650] struct work_struct *shared_workqueue[10]; [L2660] spinlock_t kernel_lock; [L3346] request_queue_t fixed_request_queue[10]; [L3348] int number_request_queue_used = 0; [L3432] struct proc_dir_entry *proc_root_driver; [L3742] struct ddv_tty_driver global_tty_driver; [L3921] int ddv_ioport_request_start; [L3922] int ddv_ioport_request_len; [L1850] _ddv_module_init = zf_init [L1851] _ddv_module_exit = zf_exit [L1852] CALL call_ddv() [L2724] int err; [L2726] current_execution_context = 1 [L2728] CALL init_kernel() [L2664] int i; VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2666] CALL spin_lock_init(&kernel_lock) VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, #in~lock={44:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L4153] lock->init = 1 [L4154] lock->locked = 0 [L2666] RET spin_lock_init(&kernel_lock) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i = 0 VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=2, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=3, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=4, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=5, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=6, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=7, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=8, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=9, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=10, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND FALSE !(i < 10) [L2672] i = 0 VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] COND TRUE i < 1 [L2673] tasklet_registered[i].tasklet = ((void *)0) [L2674] tasklet_registered[i].is_running = 0 [L2672] i++ VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] COND FALSE !(i < 1) [L2728] RET init_kernel() [L2730] CALL (* _ddv_module_init)() [L1776] int ret; VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1778] CALL printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n") VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, #in~fmt={20:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L4480] return 0; [L1778] RET printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n") VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n")=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1780] CALL zf_readw(0x02) VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1469] CALL outb(port, 0x218) VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L3958] CALL __VERIFIER_assert(port >= ddv_ioport_request_start && port < ddv_ioport_request_start + ddv_ioport_request_len, "I/O port is requested") [L12] COND TRUE !expression VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, #in~x={26:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, expression=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, unknown-#in~expression-unknown=0, x={26:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L12] reach_error() VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, #in~x={26:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, expression=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, unknown-#in~expression-unknown=0, x={26:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 29 procedures, 269 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 109.9s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 4.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 4.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 530 mSDsluCounter, 2551 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1618 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 579 IncrementalHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 933 mSDtfsCounter, 579 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 74.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=270occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1689 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 6/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 13:41:15,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW --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 32bit --witnessprinter.graph.data.programhash b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 13:41:17,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:41:17,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:41:17,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:41:17,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:41:17,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:41:17,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:41:17,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:41:17,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:41:17,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:41:17,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:41:17,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:41:17,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:41:17,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:41:17,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:41:17,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:41:17,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:41:17,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:41:17,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:41:17,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:41:17,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:41:17,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:41:17,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:41:17,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:41:17,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:41:17,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:41:17,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:41:17,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:41:17,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:41:17,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:41:17,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:41:17,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:41:17,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:41:17,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:41:17,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:41:17,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:41:17,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:41:17,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:41:17,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:41:17,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:41:17,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:41:17,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 13:41:17,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:41:17,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:41:17,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:41:17,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:41:17,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:41:17,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:41:17,670 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:41:17,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:41:17,671 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:41:17,672 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:41:17,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:41:17,673 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:41:17,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:41:17,674 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:41:17,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:41:17,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:41:17,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:41:17,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:41:17,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:41:17,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 13:41:17,676 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 13:41:17,676 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 13:41:17,676 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:41:17,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:41:17,677 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:41:17,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:41:17,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:41:17,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 13:41:17,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:41:17,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:41:17,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:41:17,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:41:17,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:41:17,679 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 13:41:17,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 13:41:17,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:41:17,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:41:17,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 13:41:17,681 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9ba053a0d2bb5cff65ef20f502acdb8ce89a9e82653cf0711701cf2b8f86a02 [2022-11-23 13:41:18,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:41:18,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:41:18,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:41:18,115 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:41:18,115 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:41:18,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-11-23 13:41:21,315 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:41:21,723 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:41:21,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i [2022-11-23 13:41:21,746 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/96e0595f8/5bc6a5bab3c6435480ed34ce6a0e7641/FLAG22b8819a1 [2022-11-23 13:41:21,766 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/data/96e0595f8/5bc6a5bab3c6435480ed34ce6a0e7641 [2022-11-23 13:41:21,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:41:21,770 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:41:21,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:41:21,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:41:21,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:41:21,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:21" (1/1) ... [2022-11-23 13:41:21,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@460e26b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:21, skipping insertion in model container [2022-11-23 13:41:21,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:41:21" (1/1) ... [2022-11-23 13:41:21,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:41:21,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:41:22,092 WARN L237 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-11-23 13:41:23,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:41:23,620 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 13:41:23,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:41:23,642 WARN L237 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-11-23 13:41:23,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:41:23,876 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:41:23,886 WARN L237 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_cf95fbeb-b645-4462-8af2-872ddf2415e2/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb.i[453,466] [2022-11-23 13:41:24,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:41:24,224 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:41:24,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24 WrapperNode [2022-11-23 13:41:24,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:41:24,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:41:24,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:41:24,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:41:24,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,348 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 977 [2022-11-23 13:41:24,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:41:24,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:41:24,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:41:24,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:41:24,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,422 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,436 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:41:24,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:41:24,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:41:24,451 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:41:24,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (1/1) ... [2022-11-23 13:41:24,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:41:24,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:24,517 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:41:24,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:41:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2022-11-23 13:41:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2022-11-23 13:41:24,564 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-11-23 13:41:24,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2022-11-23 13:41:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 13:41:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2022-11-23 13:41:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 13:41:24,565 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 13:41:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 13:41:24,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2022-11-23 13:41:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 13:41:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-23 13:41:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 13:41:24,566 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 13:41:24,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 13:41:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2022-11-23 13:41:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2022-11-23 13:41:24,567 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2022-11-23 13:41:24,567 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-23 13:41:24,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-23 13:41:24,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 13:41:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2022-11-23 13:41:24,569 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2022-11-23 13:41:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:41:24,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 13:41:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:41:24,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 13:41:24,570 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2022-11-23 13:41:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2022-11-23 13:41:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2022-11-23 13:41:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2022-11-23 13:41:24,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:41:24,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:41:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2022-11-23 13:41:24,572 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2022-11-23 13:41:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-23 13:41:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 13:41:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-23 13:41:24,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 13:41:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 13:41:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 13:41:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-23 13:41:24,573 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-23 13:41:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 13:41:24,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 13:41:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-23 13:41:24,574 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-23 13:41:24,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-23 13:41:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2022-11-23 13:41:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2022-11-23 13:41:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-23 13:41:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-23 13:41:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 13:41:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 13:41:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2022-11-23 13:41:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2022-11-23 13:41:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2022-11-23 13:41:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2022-11-23 13:41:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2022-11-23 13:41:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2022-11-23 13:41:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2022-11-23 13:41:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2022-11-23 13:41:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2022-11-23 13:41:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2022-11-23 13:41:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2022-11-23 13:41:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2022-11-23 13:41:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-11-23 13:41:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2022-11-23 13:41:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2022-11-23 13:41:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2022-11-23 13:41:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-23 13:41:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2022-11-23 13:41:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2022-11-23 13:41:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 13:41:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 13:41:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2022-11-23 13:41:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2022-11-23 13:41:25,033 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:41:25,036 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:41:29,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:41:29,952 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:41:29,953 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 13:41:29,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:29 BoogieIcfgContainer [2022-11-23 13:41:29,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:41:29,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:41:29,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:41:29,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:41:29,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:41:21" (1/3) ... [2022-11-23 13:41:29,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a7bcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:29, skipping insertion in model container [2022-11-23 13:41:29,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:41:24" (2/3) ... [2022-11-23 13:41:29,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a7bcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:41:29, skipping insertion in model container [2022-11-23 13:41:29,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:29" (3/3) ... [2022-11-23 13:41:29,969 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb.i [2022-11-23 13:41:29,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:41:29,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:41:30,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:41:30,049 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@737cb429, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:41:30,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:41:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 245 states have (on average 1.3591836734693878) internal successors, (333), 252 states have internal predecessors, (333), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-23 13:41:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 13:41:30,092 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:30,092 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:30,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:30,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:30,106 INFO L85 PathProgramCache]: Analyzing trace with hash 2134418313, now seen corresponding path program 1 times [2022-11-23 13:41:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:41:30,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136982047] [2022-11-23 13:41:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:30,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:41:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:41:30,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:41:30,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 13:41:30,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:30,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 13:41:30,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:41:30,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:41:30,770 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:41:30,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2136982047] [2022-11-23 13:41:30,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2136982047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:41:30,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:41:30,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:41:30,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423266270] [2022-11-23 13:41:30,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:41:30,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:41:30,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:41:30,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:41:30,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:30,822 INFO L87 Difference]: Start difference. First operand has 351 states, 245 states have (on average 1.3591836734693878) internal successors, (333), 252 states have internal predecessors, (333), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 13:41:30,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:30,990 INFO L93 Difference]: Finished difference Result 700 states and 1016 transitions. [2022-11-23 13:41:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:41:30,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-11-23 13:41:30,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:31,008 INFO L225 Difference]: With dead ends: 700 [2022-11-23 13:41:31,008 INFO L226 Difference]: Without dead ends: 345 [2022-11-23 13:41:31,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:41:31,021 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 2 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:31,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 953 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:41:31,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-23 13:41:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2022-11-23 13:41:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 240 states have (on average 1.3375) internal successors, (321), 247 states have internal predecessors, (321), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:41:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 472 transitions. [2022-11-23 13:41:31,091 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 472 transitions. Word has length 23 [2022-11-23 13:41:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:31,093 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 472 transitions. [2022-11-23 13:41:31,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 13:41:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 472 transitions. [2022-11-23 13:41:31,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 13:41:31,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:31,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:31,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:41:31,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:31,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 130059917, now seen corresponding path program 1 times [2022-11-23 13:41:31,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:41:31,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50031549] [2022-11-23 13:41:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:41:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:41:31,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:41:31,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 13:41:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:31,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:41:31,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:31,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:32,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:41:32,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50031549] [2022-11-23 13:41:32,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50031549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:32,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1584024329] [2022-11-23 13:41:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:32,011 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:41:32,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:41:32,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:41:32,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-23 13:41:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:32,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:41:32,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:32,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:32,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:32,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:32,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1584024329] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:32,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183626720] [2022-11-23 13:41:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:41:32,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:32,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:32,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:41:32,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:41:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:41:33,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 13:41:33,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:33,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:33,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183626720] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:33,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 13:41:33,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 6 [2022-11-23 13:41:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438246193] [2022-11-23 13:41:33,557 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 13:41:33,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:41:33,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:41:33,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:41:33,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:41:33,559 INFO L87 Difference]: Start difference. First operand 343 states and 472 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:41:33,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:41:33,859 INFO L93 Difference]: Finished difference Result 685 states and 944 transitions. [2022-11-23 13:41:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 13:41:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-23 13:41:33,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:41:33,867 INFO L225 Difference]: With dead ends: 685 [2022-11-23 13:41:33,869 INFO L226 Difference]: Without dead ends: 349 [2022-11-23 13:41:33,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-23 13:41:33,874 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 170 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:41:33,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1701 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:41:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-23 13:41:33,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2022-11-23 13:41:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 246 states have (on average 1.3252032520325203) internal successors, (326), 253 states have internal predecessors, (326), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:41:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 477 transitions. [2022-11-23 13:41:33,908 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 477 transitions. Word has length 27 [2022-11-23 13:41:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:41:33,909 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 477 transitions. [2022-11-23 13:41:33,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:41:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 477 transitions. [2022-11-23 13:41:33,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 13:41:33,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:41:33,910 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:41:33,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:34,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:34,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:41:34,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:34,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:41:34,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:41:34,513 INFO L85 PathProgramCache]: Analyzing trace with hash -599587085, now seen corresponding path program 2 times [2022-11-23 13:41:34,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:41:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920239658] [2022-11-23 13:41:34,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:41:34,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:41:34,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:41:34,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:41:34,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 13:41:35,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:41:35,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:41:35,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:41:35,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:35,277 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:35,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:35,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 13:41:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920239658] [2022-11-23 13:41:35,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1920239658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:35,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1464198532] [2022-11-23 13:41:35,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:41:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 13:41:35,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 13:41:35,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 13:41:35,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-23 13:41:36,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:41:36,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:41:36,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:41:36,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:36,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:36,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1464198532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:36,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053307262] [2022-11-23 13:41:36,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 13:41:36,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:41:36,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:41:36,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:41:36,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 13:41:59,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 13:41:59,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 13:41:59,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 13:41:59,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:41:59,616 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:59,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:41:59,663 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:41:59,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053307262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 13:41:59,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 13:41:59,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 12 [2022-11-23 13:41:59,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717862186] [2022-11-23 13:41:59,664 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 13:41:59,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 13:41:59,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 13:41:59,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 13:41:59,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:41:59,665 INFO L87 Difference]: Start difference. First operand 349 states and 477 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:42:00,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:42:00,412 INFO L93 Difference]: Finished difference Result 697 states and 957 transitions. [2022-11-23 13:42:00,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 13:42:00,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2022-11-23 13:42:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:42:00,415 INFO L225 Difference]: With dead ends: 697 [2022-11-23 13:42:00,415 INFO L226 Difference]: Without dead ends: 361 [2022-11-23 13:42:00,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:42:00,417 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 839 mSDsluCounter, 2264 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:42:00,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [868 Valid, 2729 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:42:00,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-23 13:42:00,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-11-23 13:42:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 258 states have (on average 1.310077519379845) internal successors, (338), 265 states have internal predecessors, (338), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-11-23 13:42:00,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 489 transitions. [2022-11-23 13:42:00,472 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 489 transitions. Word has length 33 [2022-11-23 13:42:00,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:42:00,472 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 489 transitions. [2022-11-23 13:42:00,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 13:42:00,472 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 489 transitions. [2022-11-23 13:42:00,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 13:42:00,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:42:00,474 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:42:00,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 13:42:00,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:42:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:42:01,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 13:42:01,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outbErr0ASSERT_VIOLATIONERROR_FUNCTION === [outbErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:42:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:42:01,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1535781439, now seen corresponding path program 3 times [2022-11-23 13:42:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 13:42:01,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515570585] [2022-11-23 13:42:01,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 13:42:01,098 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:42:01,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 13:42:01,100 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 13:42:01,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 13:42:02,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-23 13:42:02,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-23 13:42:02,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 13:42:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 13:42:02,917 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-23 13:42:02,918 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 13:42:02,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location outbErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:42:02,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-23 13:42:03,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 13:42:03,143 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-23 13:42:03,146 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:42:03,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:42:03 BoogieIcfgContainer [2022-11-23 13:42:03,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:42:03,336 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:42:03,336 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:42:03,337 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:42:03,337 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:41:29" (3/4) ... [2022-11-23 13:42:03,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 13:42:03,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:42:03,341 INFO L158 Benchmark]: Toolchain (without parser) took 41571.38ms. Allocated memory was 81.8MB in the beginning and 218.1MB in the end (delta: 136.3MB). Free memory was 54.7MB in the beginning and 88.6MB in the end (delta: -33.9MB). Peak memory consumption was 102.7MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,341 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:42:03,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2451.51ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 54.5MB in the beginning and 44.7MB in the end (delta: 9.8MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 122.89ms. Allocated memory is still 98.6MB. Free memory was 44.7MB in the beginning and 36.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,343 INFO L158 Benchmark]: Boogie Preprocessor took 101.76ms. Allocated memory is still 98.6MB. Free memory was 36.3MB in the beginning and 50.8MB in the end (delta: -14.6MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,343 INFO L158 Benchmark]: RCFGBuilder took 5505.56ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 50.8MB in the beginning and 102.2MB in the end (delta: -51.3MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,343 INFO L158 Benchmark]: TraceAbstraction took 33376.79ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 102.2MB in the beginning and 88.6MB in the end (delta: 13.6MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2022-11-23 13:42:03,344 INFO L158 Benchmark]: Witness Printer took 4.27ms. Allocated memory is still 218.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:42:03,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 56.6MB. Free memory is still 34.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2451.51ms. Allocated memory was 81.8MB in the beginning and 98.6MB in the end (delta: 16.8MB). Free memory was 54.5MB in the beginning and 44.7MB in the end (delta: 9.8MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 122.89ms. Allocated memory is still 98.6MB. Free memory was 44.7MB in the beginning and 36.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 101.76ms. Allocated memory is still 98.6MB. Free memory was 36.3MB in the beginning and 50.8MB in the end (delta: -14.6MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * RCFGBuilder took 5505.56ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 50.8MB in the beginning and 102.2MB in the end (delta: -51.3MB). Peak memory consumption was 64.5MB. Max. memory is 16.1GB. * TraceAbstraction took 33376.79ms. Allocated memory was 174.1MB in the beginning and 218.1MB in the end (delta: 44.0MB). Free memory was 102.2MB in the beginning and 88.6MB in the end (delta: 13.6MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. * Witness Printer took 4.27ms. Allocated memory is still 218.1MB. Free memory is still 88.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 1474. Possible FailurePath: [L20] int current_execution_context; [L31] int (* _ddv_module_init)(void); [L32] void (* _ddv_module_exit)(void); [L232] unsigned long jiffies; [L1474] char _ddv_module_author[] = "Fernando Fuganti "; [L1475] char _ddv_module_description[] = "MachZ ZF-Logic Watchdog driver"; [L1476] char _ddv_module_license[] = "GPL"; [L1478] static int nowayout = 0; [L1479] char _ddv_module_param_nowayout [] = "Watchdog cannot be stopped once started (default=CONFIG_WATCHDOG_NOWAYOUT)"; [L1483-L1487] static struct watchdog_info zf_info = { .options = 0x8000 | 0x0100, .firmware_version = 1, .identity = "ZF-Logic watchdog", }; [L1488] static int action = 0; [L1489] char _ddv_module_param_action [] = "after watchdog resets, generate: 0 = RESET(*) 1 = SMI 2 = NMI 3 = SCI"; [L1491] static int zf_action = 0x0800; [L1492] static unsigned long zf_is_open; [L1493] static char zf_expect_close; [L1494] static spinlock_t zf_lock; [L1495] static spinlock_t zf_port_lock; [L1496] static struct timer_list zf_timer; [L1497] static unsigned long next_heartbeat = 0; [L1743-L1750] static const struct file_operations zf_fops = { .owner = ((struct module *) 0), .llseek = no_llseek, .write = zf_write, .ioctl = zf_ioctl, .open = zf_open, .release = zf_close, }; [L1752-L1756] static struct miscdevice zf_miscdev = { .minor = 130, .name = "watchdog", .fops = (struct file_operations *)&zf_fops, }; [L1763-L1765] static struct notifier_block zf_notifier = { .notifier_call = zf_notify_sys, }; [L1845] int (* _ddv_tmp_init)(void) = zf_init; [L1846] void (* _ddv_tmp_exit)(void) = zf_exit; [L1897] struct cdev fixed_cdev[1]; [L1898] int fixed_cdev_used = 0; [L1900] short number_cdev_registered = 0; [L1911] struct ddv_cdev cdev_registered[1]; [L2448] short number_genhd_registered = 0; [L2449] short number_fixed_genhd_used = 0; [L2460] struct gendisk fixed_gendisk[10]; [L2461] struct ddv_genhd genhd_registered[10]; [L2596] struct ddv_pci_driver registered_pci_driver; [L2607] struct registered_irq registered_irq[16]; [L2617] short number_tasklet_registered = 0; [L2624] struct ddv_tasklet tasklet_registered[1]; [L2634] short number_timer_registered = 0; [L2640] struct ddv_timer timer_registered[1]; [L2650] struct work_struct *shared_workqueue[10]; [L2660] spinlock_t kernel_lock; [L3346] request_queue_t fixed_request_queue[10]; [L3348] int number_request_queue_used = 0; [L3432] struct proc_dir_entry *proc_root_driver; [L3742] struct ddv_tty_driver global_tty_driver; [L3921] int ddv_ioport_request_start; [L3922] int ddv_ioport_request_len; VAL [={0:0}, ={-1:8}, ={-1:7}, ={0:0}, action=0, cdev_registered={36:0}, current_execution_context=0, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1850] _ddv_module_init = zf_init [L1851] _ddv_module_exit = zf_exit [L1852] CALL call_ddv() [L2724] int err; [L2726] current_execution_context = 1 [L2728] CALL init_kernel() [L2664] int i; VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2666] CALL spin_lock_init(&kernel_lock) VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, #in~lock={44:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L4153] lock->init = 1 [L4154] lock->locked = 0 VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, #in~lock={44:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2666] RET spin_lock_init(&kernel_lock) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i = 0 VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=2, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=2, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=3, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=3, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=4, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=4, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=5, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=5, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=6, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=6, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=7, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=7, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=8, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=8, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=9, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND TRUE i < 10 [L2669] shared_workqueue[i] = ((void *)0) VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=9, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] i++ VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=10, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2668] COND FALSE !(i < 10) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=10, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] i = 0 VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] COND TRUE i < 1 [L2673] tasklet_registered[i].tasklet = ((void *)0) [L2674] tasklet_registered[i].is_running = 0 VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=0, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] i++ VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2672] COND FALSE !(i < 1) VAL [={-1:8}, ={-1:8}, ={-1:7}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, i=1, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L2728] RET init_kernel() [L2730] CALL (* _ddv_module_init)() [L1776] int ret; VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1778] CALL printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n") VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, #in~fmt={20:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L4480] return 0; VAL [={-1:8}, ={-1:7}, ={-1:8}, ={-1:7}, #in~fmt={20:0}, \result=0, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, fmt={20:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1778] RET printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n") VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, printk("<6>" "machzwd" ": MachZ ZF-Logic Watchdog driver initializing.\n")=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1780] CALL zf_readw(0x02) VAL [={-1:7}, ={-1:7}, ={-1:8}, ={-1:8}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L1469] CALL outb(port, 0x218) VAL [={-1:7}, ={-1:8}, ={-1:8}, ={-1:7}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L3958] CALL __VERIFIER_assert(port >= ddv_ioport_request_start && port < ddv_ioport_request_start + ddv_ioport_request_len, "I/O port is requested") [L12] COND TRUE !expression VAL [={-1:8}, ={-1:7}, ={-1:7}, ={-1:8}, #in~x={26:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, expression=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, unknown-#in~expression-unknown=0, x={26:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] [L12] reach_error() VAL [={-1:7}, ={-1:8}, ={-1:7}, ={-1:8}, #in~x={26:0}, action=0, cdev_registered={36:0}, current_execution_context=1, ddv_ioport_request_len=0, ddv_ioport_request_start=0, expression=0, fixed_cdev={35:0}, fixed_cdev_used=0, fixed_gendisk={37:0}, fixed_request_queue={45:0}, genhd_registered={38:0}, global_tty_driver={46:0}, jiffies=0, kernel_lock={44:0}, next_heartbeat=0, nowayout=0, number_cdev_registered=0, number_fixed_genhd_used=0, number_genhd_registered=0, number_request_queue_used=0, number_tasklet_registered=0, number_timer_registered=0, proc_root_driver={0:0}, registered_irq={40:0}, registered_pci_driver={39:0}, shared_workqueue={43:0}, tasklet_registered={41:0}, timer_registered={42:0}, unknown-#in~expression-unknown=0, x={26:0}, zf_action=2048, zf_expect_close=0, zf_fops={32:0}, zf_info={27:0}, zf_is_open={28:0}, zf_lock={29:0}, zf_miscdev={33:0}, zf_notifier={34:0}, zf_port_lock={30:0}, zf_timer={31:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 29 procedures, 355 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 33.1s, OverallIterations: 4, TraceHistogramMax: 10, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1069 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1011 mSDsluCounter, 5383 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3974 mSDsCounter, 144 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 279 IncrementalHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 144 mSolverCounterUnsat, 1409 mSDtfsCounter, 279 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=361occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 26.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 248 NumberOfCodeBlocks, 248 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 370 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 7 NumberOfNonLiveVariables, 4059 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 12/114 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 13:42:03,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf95fbeb-b645-4462-8af2-872ddf2415e2/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample