./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 --- 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-e04fb08 [2022-11-16 20:06:53,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 20:06:53,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 20:06:53,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 20:06:53,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 20:06:53,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 20:06:53,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 20:06:53,765 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 20:06:53,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 20:06:53,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 20:06:53,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 20:06:53,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 20:06:53,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 20:06:53,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 20:06:53,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 20:06:53,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 20:06:53,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 20:06:53,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 20:06:53,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 20:06:53,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 20:06:53,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 20:06:53,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 20:06:53,813 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 20:06:53,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 20:06:53,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 20:06:53,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 20:06:53,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 20:06:53,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 20:06:53,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 20:06:53,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 20:06:53,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 20:06:53,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 20:06:53,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 20:06:53,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 20:06:53,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 20:06:53,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 20:06:53,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 20:06:53,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 20:06:53,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 20:06:53,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 20:06:53,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 20:06:53,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 20:06:53,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 20:06:53,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 20:06:53,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 20:06:53,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 20:06:53,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 20:06:53,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 20:06:53,894 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 20:06:53,894 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 20:06:53,894 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 20:06:53,895 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 20:06:53,896 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 20:06:53,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 20:06:53,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 20:06:53,897 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 20:06:53,898 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 20:06:53,898 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 20:06:53,898 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 20:06:53,899 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 20:06:53,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 20:06:53,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 20:06:53,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 20:06:53,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 20:06:53,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 20:06:53,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 20:06:53,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 20:06:53,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 20:06:53,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 20:06:53,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 20:06:53,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 20:06:53,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:53,906 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 20:06:53,906 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 20:06:53,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 20:06:53,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 20:06:53,907 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 20:06:53,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 20:06:53,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 20:06:53,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 20:06:53,909 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_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2022-11-16 20:06:54,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 20:06:54,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 20:06:54,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 20:06:54,332 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 20:06:54,333 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 20:06:54,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-16 20:06:54,445 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/data/4077ff2c6/8d536b693cf34596a5c632a5af925ebe/FLAG5bc61b6e9 [2022-11-16 20:06:55,541 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 20:06:55,542 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-16 20:06:55,605 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/data/4077ff2c6/8d536b693cf34596a5c632a5af925ebe/FLAG5bc61b6e9 [2022-11-16 20:06:55,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/data/4077ff2c6/8d536b693cf34596a5c632a5af925ebe [2022-11-16 20:06:55,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 20:06:55,905 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 20:06:55,910 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:55,910 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 20:06:55,914 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 20:06:55,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:55" (1/1) ... [2022-11-16 20:06:55,918 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1d2b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:55, skipping insertion in model container [2022-11-16 20:06:55,918 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:06:55" (1/1) ... [2022-11-16 20:06:55,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 20:06:56,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 20:06:57,802 WARN L229 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_7bd06bde-ebed-419d-b1bb-54682c70c84f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-16 20:06:57,855 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:57,895 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 20:06:58,434 WARN L229 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_7bd06bde-ebed-419d-b1bb-54682c70c84f/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-16 20:06:58,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 20:06:58,548 INFO L208 MainTranslator]: Completed translation [2022-11-16 20:06:58,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58 WrapperNode [2022-11-16 20:06:58,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 20:06:58,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:58,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 20:06:58,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 20:06:58,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:58,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:58,804 INFO L138 Inliner]: procedures = 167, calls = 1419, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4357 [2022-11-16 20:06:58,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 20:06:58,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 20:06:58,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 20:06:58,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 20:06:58,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:58,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:58,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:58,937 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,164 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 20:06:59,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 20:06:59,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 20:06:59,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 20:06:59,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (1/1) ... [2022-11-16 20:06:59,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 20:06:59,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:06:59,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 20:06:59,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 20:06:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-16 20:06:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-16 20:06:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2022-11-16 20:06:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2022-11-16 20:06:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-16 20:06:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-16 20:06:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-16 20:06:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-16 20:06:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-16 20:06:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-16 20:06:59,359 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-16 20:06:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 20:06:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2022-11-16 20:06:59,360 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2022-11-16 20:06:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-16 20:06:59,360 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-16 20:06:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2022-11-16 20:06:59,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2022-11-16 20:06:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-16 20:06:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-16 20:06:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 20:06:59,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 20:06:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2022-11-16 20:06:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2022-11-16 20:06:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-16 20:06:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-16 20:06:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-16 20:06:59,362 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-16 20:06:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-11-16 20:06:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-11-16 20:06:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 20:06:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-16 20:06:59,363 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-16 20:06:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-16 20:06:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-16 20:06:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-16 20:06:59,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-16 20:06:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-16 20:06:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-16 20:06:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-16 20:06:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-16 20:06:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2022-11-16 20:06:59,365 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2022-11-16 20:06:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2022-11-16 20:06:59,366 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2022-11-16 20:06:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2022-11-16 20:06:59,367 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2022-11-16 20:06:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 20:06:59,368 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-16 20:06:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-16 20:06:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-16 20:06:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-16 20:06:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-16 20:06:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-16 20:06:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 20:06:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 20:06:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 20:06:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-16 20:06:59,371 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-16 20:06:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-16 20:06:59,372 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2022-11-16 20:06:59,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2022-11-16 20:06:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-16 20:06:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-16 20:06:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2022-11-16 20:06:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2022-11-16 20:06:59,373 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2022-11-16 20:06:59,373 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2022-11-16 20:06:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 20:06:59,374 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-16 20:06:59,374 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-16 20:06:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2022-11-16 20:06:59,375 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2022-11-16 20:06:59,375 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-16 20:06:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-16 20:06:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-16 20:06:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-16 20:06:59,376 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2022-11-16 20:06:59,376 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2022-11-16 20:06:59,377 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-16 20:06:59,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-16 20:06:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 20:06:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 20:06:59,378 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2022-11-16 20:06:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2022-11-16 20:06:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-16 20:06:59,379 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-16 20:06:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-11-16 20:06:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-11-16 20:06:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-16 20:06:59,381 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-16 20:06:59,381 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-16 20:06:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-16 20:06:59,382 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-16 20:06:59,382 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-16 20:06:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2022-11-16 20:06:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2022-11-16 20:06:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-16 20:06:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-16 20:06:59,383 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-16 20:06:59,383 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-16 20:06:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-16 20:06:59,384 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-16 20:06:59,384 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-16 20:06:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-16 20:06:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-16 20:06:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-16 20:06:59,385 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-16 20:06:59,385 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-16 20:06:59,386 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-16 20:06:59,387 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-16 20:06:59,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 20:06:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-16 20:06:59,391 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-16 20:06:59,391 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-16 20:06:59,394 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-16 20:06:59,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-16 20:06:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 20:06:59,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 20:06:59,395 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2022-11-16 20:06:59,399 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2022-11-16 20:07:00,289 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 20:07:00,295 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 20:07:00,820 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 20:07:01,157 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-11-16 20:07:01,157 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-11-16 20:07:01,174 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 20:07:01,323 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2022-11-16 20:07:01,323 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2022-11-16 20:07:01,494 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-16 20:07:01,846 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 20:07:01,865 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 20:07:04,869 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2022-11-16 20:07:04,869 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2022-11-16 20:07:04,870 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2022-11-16 20:07:04,870 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2022-11-16 20:07:05,006 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 20:07:06,421 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 20:07:06,422 INFO L300 CfgBuilder]: Removed 94 assume(true) statements. [2022-11-16 20:07:06,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:07:06 BoogieIcfgContainer [2022-11-16 20:07:06,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 20:07:06,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 20:07:06,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 20:07:06,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 20:07:06,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:06:55" (1/3) ... [2022-11-16 20:07:06,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae19b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:07:06, skipping insertion in model container [2022-11-16 20:07:06,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:06:58" (2/3) ... [2022-11-16 20:07:06,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ae19b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:07:06, skipping insertion in model container [2022-11-16 20:07:06,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 08:07:06" (3/3) ... [2022-11-16 20:07:06,440 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-16 20:07:06,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 20:07:06,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 20:07:06,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 20:07:06,562 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;@1be8e8ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 20:07:06,563 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 20:07:06,571 INFO L276 IsEmpty]: Start isEmpty. Operand has 794 states, 484 states have (on average 1.3760330578512396) internal successors, (666), 509 states have internal predecessors, (666), 257 states have call successors, (257), 52 states have call predecessors, (257), 51 states have return successors, (256), 253 states have call predecessors, (256), 256 states have call successors, (256) [2022-11-16 20:07:06,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 20:07:06,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:06,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:06,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:06,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1659550378, now seen corresponding path program 1 times [2022-11-16 20:07:06,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:06,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171059569] [2022-11-16 20:07:06,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:06,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:07,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:07,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171059569] [2022-11-16 20:07:07,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171059569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:07,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:07,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899486282] [2022-11-16 20:07:07,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:07,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:07,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:07,640 INFO L87 Difference]: Start difference. First operand has 794 states, 484 states have (on average 1.3760330578512396) internal successors, (666), 509 states have internal predecessors, (666), 257 states have call successors, (257), 52 states have call predecessors, (257), 51 states have return successors, (256), 253 states have call predecessors, (256), 256 states have call successors, (256) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:07:10,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:07:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:12,790 INFO L93 Difference]: Finished difference Result 2301 states and 3483 transitions. [2022-11-16 20:07:12,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:12,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-16 20:07:12,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:12,824 INFO L225 Difference]: With dead ends: 2301 [2022-11-16 20:07:12,824 INFO L226 Difference]: Without dead ends: 1520 [2022-11-16 20:07:12,840 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 [2022-11-16 20:07:12,844 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1053 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 112 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 2207 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:12,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 2207 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 287 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-16 20:07:12,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-11-16 20:07:13,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1515. [2022-11-16 20:07:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 927 states have (on average 1.2481121898597627) internal successors, (1157), 959 states have internal predecessors, (1157), 492 states have call successors, (492), 97 states have call predecessors, (492), 95 states have return successors, (491), 481 states have call predecessors, (491), 489 states have call successors, (491) [2022-11-16 20:07:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2140 transitions. [2022-11-16 20:07:13,149 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2140 transitions. Word has length 17 [2022-11-16 20:07:13,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:13,150 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2140 transitions. [2022-11-16 20:07:13,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:07:13,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2140 transitions. [2022-11-16 20:07:13,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 20:07:13,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:13,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:13,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 20:07:13,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:13,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:13,154 INFO L85 PathProgramCache]: Analyzing trace with hash 93059404, now seen corresponding path program 1 times [2022-11-16 20:07:13,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:13,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348061840] [2022-11-16 20:07:13,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:13,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:07:13,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:13,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348061840] [2022-11-16 20:07:13,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348061840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:13,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:13,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583843116] [2022-11-16 20:07:13,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:13,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:13,653 INFO L87 Difference]: Start difference. First operand 1515 states and 2140 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:07:15,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:07:15,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:15,908 INFO L93 Difference]: Finished difference Result 1517 states and 2141 transitions. [2022-11-16 20:07:15,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:15,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-16 20:07:15,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:15,921 INFO L225 Difference]: With dead ends: 1517 [2022-11-16 20:07:15,922 INFO L226 Difference]: Without dead ends: 1505 [2022-11-16 20:07:15,924 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 [2022-11-16 20:07:15,925 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 1104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:15,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 973 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 20:07:15,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2022-11-16 20:07:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1505. [2022-11-16 20:07:16,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 922 states have (on average 1.2440347071583515) internal successors, (1147), 952 states have internal predecessors, (1147), 488 states have call successors, (488), 96 states have call predecessors, (488), 94 states have return successors, (488), 478 states have call predecessors, (488), 486 states have call successors, (488) [2022-11-16 20:07:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2123 transitions. [2022-11-16 20:07:16,058 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2123 transitions. Word has length 18 [2022-11-16 20:07:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:16,059 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2123 transitions. [2022-11-16 20:07:16,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 20:07:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2123 transitions. [2022-11-16 20:07:16,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 20:07:16,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:16,080 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:16,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 20:07:16,083 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:16,084 INFO L85 PathProgramCache]: Analyzing trace with hash 117636850, now seen corresponding path program 1 times [2022-11-16 20:07:16,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:16,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828551791] [2022-11-16 20:07:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:16,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 20:07:16,759 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:16,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828551791] [2022-11-16 20:07:16,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828551791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:16,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:16,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 20:07:16,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793195858] [2022-11-16 20:07:16,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:16,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 20:07:16,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:16,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 20:07:16,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 20:07:16,763 INFO L87 Difference]: Start difference. First operand 1505 states and 2123 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:07:19,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:07:20,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:20,735 INFO L93 Difference]: Finished difference Result 3549 states and 5092 transitions. [2022-11-16 20:07:20,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 20:07:20,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-11-16 20:07:20,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:20,752 INFO L225 Difference]: With dead ends: 3549 [2022-11-16 20:07:20,752 INFO L226 Difference]: Without dead ends: 2064 [2022-11-16 20:07:20,761 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 [2022-11-16 20:07:20,765 INFO L413 NwaCegarLoop]: 1129 mSDtfsCounter, 284 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2029 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:20,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2029 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 289 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-16 20:07:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2022-11-16 20:07:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 2060. [2022-11-16 20:07:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1273 states have (on average 1.2537313432835822) internal successors, (1596), 1317 states have internal predecessors, (1596), 692 states have call successors, (692), 96 states have call predecessors, (692), 94 states have return successors, (693), 676 states have call predecessors, (693), 690 states have call successors, (693) [2022-11-16 20:07:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 2981 transitions. [2022-11-16 20:07:20,944 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 2981 transitions. Word has length 78 [2022-11-16 20:07:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:20,945 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 2981 transitions. [2022-11-16 20:07:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 20:07:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 2981 transitions. [2022-11-16 20:07:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 20:07:20,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:20,955 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:20,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 20:07:20,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:20,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1081394077, now seen corresponding path program 1 times [2022-11-16 20:07:20,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099909841] [2022-11-16 20:07:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:20,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:07:21,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:21,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099909841] [2022-11-16 20:07:21,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099909841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 20:07:21,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 20:07:21,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 20:07:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778502885] [2022-11-16 20:07:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 20:07:21,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 20:07:21,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:07:21,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 20:07:21,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 20:07:21,963 INFO L87 Difference]: Start difference. First operand 2060 states and 2981 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 20:07:26,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 20:07:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:07:31,694 INFO L93 Difference]: Finished difference Result 8044 states and 12048 transitions. [2022-11-16 20:07:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 20:07:31,695 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 105 [2022-11-16 20:07:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:07:31,749 INFO L225 Difference]: With dead ends: 8044 [2022-11-16 20:07:31,750 INFO L226 Difference]: Without dead ends: 6005 [2022-11-16 20:07:31,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 20:07:31,771 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 979 mSDsluCounter, 3104 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 5223 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 20:07:31,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 5223 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-16 20:07:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2022-11-16 20:07:32,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 2066. [2022-11-16 20:07:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 1277 states have (on average 1.2529365700861395) internal successors, (1600), 1321 states have internal predecessors, (1600), 694 states have call successors, (694), 96 states have call predecessors, (694), 94 states have return successors, (695), 678 states have call predecessors, (695), 692 states have call successors, (695) [2022-11-16 20:07:32,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2989 transitions. [2022-11-16 20:07:32,210 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2989 transitions. Word has length 105 [2022-11-16 20:07:32,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:07:32,210 INFO L495 AbstractCegarLoop]: Abstraction has 2066 states and 2989 transitions. [2022-11-16 20:07:32,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-16 20:07:32,211 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2989 transitions. [2022-11-16 20:07:32,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 20:07:32,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:07:32,220 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 20:07:32,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 20:07:32,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 20:07:32,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:07:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash 142488498, now seen corresponding path program 1 times [2022-11-16 20:07:32,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:07:32,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075926071] [2022-11-16 20:07:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:32,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:07:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:07:32,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:07:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075926071] [2022-11-16 20:07:32,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075926071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:07:32,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842996772] [2022-11-16 20:07:32,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:07:32,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:07:32,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:07:32,855 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:07:32,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7bd06bde-ebed-419d-b1bb-54682c70c84f/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 20:07:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:07:34,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 20:07:34,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:07:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 20:07:34,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:07:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 20:07:34,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842996772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:07:34,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [217387217] [2022-11-16 20:07:34,882 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2022-11-16 20:07:34,882 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:07:34,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:07:34,894 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:07:34,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:07:40,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 522 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 136 [2022-11-16 20:07:41,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1715 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 276 [2022-11-16 20:07:41,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 526 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 146 [2022-11-16 20:07:42,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 297 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 111 [2022-11-16 20:07:42,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1265 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 226 [2022-11-16 20:07:43,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 310 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 101 [2022-11-16 20:07:43,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 649 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 161 [2022-11-16 20:07:44,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4071 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 264 treesize of output 436 [2022-11-16 20:07:45,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 121 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 61 [2022-11-16 20:08:28,714 INFO L197 IcfgInterpreter]: Interpreting procedure whiteheat_init with input of size 3104 for LOIs [2022-11-16 20:09:20,746 INFO L197 IcfgInterpreter]: Interpreting procedure usb_serial_register with input of size 3108 for LOIs [2022-11-16 20:09:25,148 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:10:51,175 WARN L233 SmtUtils]: Spent 1.43m on a formula simplification that was a NOOP. DAG size: 3104 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:12:18,083 WARN L233 SmtUtils]: Spent 1.44m on a formula simplification that was a NOOP. DAG size: 3108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:13:40,807 WARN L233 SmtUtils]: Spent 1.37m on a formula simplification that was a NOOP. DAG size: 3118 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:16:35,962 WARN L233 SmtUtils]: Spent 2.91m on a formula simplification. DAG size of input: 3118 DAG size of output: 3112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 20:19:34,148 WARN L233 SmtUtils]: Spent 2.96m on a formula simplification. DAG size of input: 3118 DAG size of output: 3112 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)