./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 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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/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 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-4e7fbc6 [2022-11-23 14:54:44,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:54:44,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:54:44,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:54:44,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:54:44,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:54:44,913 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:54:44,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:54:44,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:54:44,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:54:44,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:54:44,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:54:44,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:54:44,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:54:44,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:54:44,938 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:54:44,939 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:54:44,940 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:54:44,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:54:44,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:54:44,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:54:44,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:54:44,952 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:54:44,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:54:44,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:54:44,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:54:44,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:54:44,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:54:44,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:54:44,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:54:44,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:54:44,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:54:44,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:54:44,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:54:44,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:54:44,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:54:44,963 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:54:44,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:54:44,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:54:44,964 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:54:44,965 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:54:44,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:54:45,004 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:54:45,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:54:45,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:54:45,008 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:54:45,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:54:45,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:54:45,010 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:54:45,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:54:45,011 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:54:45,011 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:54:45,012 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:54:45,012 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:54:45,012 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:54:45,012 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:54:45,013 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:54:45,013 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:54:45,013 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:54:45,013 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:54:45,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:54:45,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:54:45,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:54:45,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:54:45,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:54:45,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:54:45,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:54:45,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:54:45,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:54:45,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:54:45,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:54:45,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:54:45,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:54:45,017 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:54:45,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:54:45,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:54:45,018 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:54:45,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:54:45,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:54:45,018 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:54:45,018 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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2022-11-23 14:54:45,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:54:45,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:54:45,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:54:45,389 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:54:45,389 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:54:45,391 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-23 14:54:48,547 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:54:49,147 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:54:49,147 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-23 14:54:49,192 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/data/6df1a77da/d737eb493fe64dada23d5383dc75fd86/FLAG8defae0c6 [2022-11-23 14:54:49,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/data/6df1a77da/d737eb493fe64dada23d5383dc75fd86 [2022-11-23 14:54:49,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:54:49,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:54:49,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:54:49,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:54:49,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:54:49,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:49" (1/1) ... [2022-11-23 14:54:49,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52208903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:49, skipping insertion in model container [2022-11-23 14:54:49,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:54:49" (1/1) ... [2022-11-23 14:54:49,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:54:49,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:54:50,753 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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-23 14:54:50,847 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:54:50,880 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:54:51,280 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_0ec73db9-1706-4b48-b31b-23cd439dc7d9/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-23 14:54:51,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:54:51,401 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:54:51,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51 WrapperNode [2022-11-23 14:54:51,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:54:51,403 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:54:51,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:54:51,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:54:51,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,490 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,676 INFO L138 Inliner]: procedures = 167, calls = 1419, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4363 [2022-11-23 14:54:51,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:54:51,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:54:51,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:54:51,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:54:51,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:54:51,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:54:51,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:54:51,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:54:51,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (1/1) ... [2022-11-23 14:54:51,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:54:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:54:51,917 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:54:51,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:54:51,969 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 14:54:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 14:54:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2022-11-23 14:54:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2022-11-23 14:54:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:54:51,971 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-23 14:54:51,971 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-23 14:54:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:54:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:54:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-23 14:54:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-23 14:54:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:54:51,972 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2022-11-23 14:54:51,972 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2022-11-23 14:54:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:54:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:54:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2022-11-23 14:54:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2022-11-23 14:54:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-23 14:54:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-23 14:54:51,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:54:51,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:54:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2022-11-23 14:54:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2022-11-23 14:54:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-23 14:54:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-23 14:54:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:54:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:54:51,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-11-23 14:54:51,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-11-23 14:54:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:54:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 14:54:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 14:54:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-23 14:54:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-23 14:54:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-23 14:54:51,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-23 14:54:51,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-23 14:54:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-23 14:54:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-23 14:54:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-23 14:54:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2022-11-23 14:54:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2022-11-23 14:54:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2022-11-23 14:54:51,976 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2022-11-23 14:54:51,976 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2022-11-23 14:54:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2022-11-23 14:54:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:54:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-23 14:54:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-23 14:54:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 14:54:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 14:54:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-23 14:54:51,977 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-23 14:54:51,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-23 14:54:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2022-11-23 14:54:51,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2022-11-23 14:54:51,978 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-23 14:54:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-23 14:54:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2022-11-23 14:54:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2022-11-23 14:54:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2022-11-23 14:54:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2022-11-23 14:54:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:54:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-23 14:54:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-23 14:54:51,979 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2022-11-23 14:54:51,979 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2022-11-23 14:54:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:54:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:54:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-23 14:54:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-23 14:54:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2022-11-23 14:54:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2022-11-23 14:54:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-23 14:54:51,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-23 14:54:51,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:54:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:54:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2022-11-23 14:54:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2022-11-23 14:54:51,981 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:54:51,981 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:54:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-11-23 14:54:51,982 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-11-23 14:54:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-23 14:54:51,982 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-23 14:54:51,982 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-23 14:54:51,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-23 14:54:51,983 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:54:51,983 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:54:51,983 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2022-11-23 14:54:51,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2022-11-23 14:54:51,983 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:54:51,983 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:54:51,984 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 14:54:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 14:54:51,984 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:54:51,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:54:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-23 14:54:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-23 14:54:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-23 14:54:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-23 14:54:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:54:51,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:54:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-23 14:54:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-23 14:54:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:54:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-23 14:54:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-23 14:54:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-23 14:54:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-23 14:54:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:54:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:54:51,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:54:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2022-11-23 14:54:51,998 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2022-11-23 14:54:52,705 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:54:52,710 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:54:53,092 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:54:53,284 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-11-23 14:54:53,285 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-11-23 14:54:53,308 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:54:53,509 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2022-11-23 14:54:53,509 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2022-11-23 14:54:53,623 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-23 14:54:53,960 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:54:53,974 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-23 14:54:56,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2022-11-23 14:54:56,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2022-11-23 14:54:56,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2022-11-23 14:54:56,066 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2022-11-23 14:54:56,132 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:54:57,297 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:54:57,297 INFO L300 CfgBuilder]: Removed 94 assume(true) statements. [2022-11-23 14:54:57,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:57 BoogieIcfgContainer [2022-11-23 14:54:57,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:54:57,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:54:57,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:54:57,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:54:57,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:54:49" (1/3) ... [2022-11-23 14:54:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b335969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:57, skipping insertion in model container [2022-11-23 14:54:57,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:54:51" (2/3) ... [2022-11-23 14:54:57,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b335969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:54:57, skipping insertion in model container [2022-11-23 14:54:57,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:54:57" (3/3) ... [2022-11-23 14:54:57,311 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-23 14:54:57,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:54:57,331 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:54:57,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:54:57,406 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;@531a16b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:54:57,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:54:57,414 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) [2022-11-23 14:54:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:54:57,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:54:57,424 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 14:54:57,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:54:57,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:54:57,430 INFO L85 PathProgramCache]: Analyzing trace with hash -639802602, now seen corresponding path program 1 times [2022-11-23 14:54:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:54:57,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577653638] [2022-11-23 14:54:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:54:57,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:54:57,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:54:58,160 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 14:54:58,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:54:58,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577653638] [2022-11-23 14:54:58,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577653638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:54:58,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:54:58,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:54:58,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430702830] [2022-11-23 14:54:58,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:54:58,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:54:58,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:54:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:54:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:54:58,232 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) [2022-11-23 14:55:00,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:03,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:04,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:04,351 INFO L93 Difference]: Finished difference Result 2304 states and 3487 transitions. [2022-11-23 14:55:04,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:04,356 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 [2022-11-23 14:55:04,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:04,383 INFO L225 Difference]: With dead ends: 2304 [2022-11-23 14:55:04,383 INFO L226 Difference]: Without dead ends: 1523 [2022-11-23 14:55:04,393 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 14:55:04,396 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 1059 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:04,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2170 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 277 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-23 14:55:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-23 14:55:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1519. [2022-11-23 14:55:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 929 states have (on average 1.247578040904198) internal successors, (1159), 961 states have internal predecessors, (1159), 493 states have call successors, (493), 98 states have call predecessors, (493), 96 states have return successors, (492), 482 states have call predecessors, (492), 490 states have call successors, (492) [2022-11-23 14:55:04,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2144 transitions. [2022-11-23 14:55:04,607 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2144 transitions. Word has length 17 [2022-11-23 14:55:04,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:04,608 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2144 transitions. [2022-11-23 14:55:04,608 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) [2022-11-23 14:55:04,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2144 transitions. [2022-11-23 14:55:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 14:55:04,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:04,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:55:04,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:55:04,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:55:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1640469450, now seen corresponding path program 1 times [2022-11-23 14:55:04,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:04,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580414918] [2022-11-23 14:55:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:04,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:05,044 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 14:55:05,045 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:05,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580414918] [2022-11-23 14:55:05,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580414918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:05,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:05,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:55:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723254722] [2022-11-23 14:55:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:05,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:55:05,054 INFO L87 Difference]: Start difference. First operand 1519 states and 2144 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) [2022-11-23 14:55:06,982 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 [] [2022-11-23 14:55:07,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:07,448 INFO L93 Difference]: Finished difference Result 1521 states and 2145 transitions. [2022-11-23 14:55:07,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:07,449 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 [2022-11-23 14:55:07,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:07,461 INFO L225 Difference]: With dead ends: 1521 [2022-11-23 14:55:07,461 INFO L226 Difference]: Without dead ends: 1509 [2022-11-23 14:55:07,463 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 14:55:07,464 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 1104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s 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, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:07,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 973 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 14:55:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2022-11-23 14:55:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2022-11-23 14:55:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 924 states have (on average 1.2435064935064934) internal successors, (1149), 954 states have internal predecessors, (1149), 489 states have call successors, (489), 97 states have call predecessors, (489), 95 states have return successors, (489), 479 states have call predecessors, (489), 487 states have call successors, (489) [2022-11-23 14:55:07,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2127 transitions. [2022-11-23 14:55:07,595 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2127 transitions. Word has length 18 [2022-11-23 14:55:07,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:07,595 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2127 transitions. [2022-11-23 14:55:07,595 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) [2022-11-23 14:55:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2127 transitions. [2022-11-23 14:55:07,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-23 14:55:07,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:07,605 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] [2022-11-23 14:55:07,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:55:07,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:55:07,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1761707170, now seen corresponding path program 1 times [2022-11-23 14:55:07,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:07,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257050343] [2022-11-23 14:55:07,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:07,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:55:08,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257050343] [2022-11-23 14:55:08,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257050343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:08,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:08,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:55:08,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298826866] [2022-11-23 14:55:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:08,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:55:08,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:08,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:55:08,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:55:08,113 INFO L87 Difference]: Start difference. First operand 1509 states and 2127 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) [2022-11-23 14:55:10,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:11,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:11,869 INFO L93 Difference]: Finished difference Result 3557 states and 5100 transitions. [2022-11-23 14:55:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:55:11,870 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 [2022-11-23 14:55:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:11,883 INFO L225 Difference]: With dead ends: 3557 [2022-11-23 14:55:11,883 INFO L226 Difference]: Without dead ends: 2068 [2022-11-23 14:55:11,890 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 14:55:11,891 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 284 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:11,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2031 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-23 14:55:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-11-23 14:55:12,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 2064. [2022-11-23 14:55:12,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2064 states, 1275 states have (on average 1.2533333333333334) internal successors, (1598), 1319 states have internal predecessors, (1598), 693 states have call successors, (693), 97 states have call predecessors, (693), 95 states have return successors, (694), 677 states have call predecessors, (694), 691 states have call successors, (694) [2022-11-23 14:55:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2064 states to 2064 states and 2985 transitions. [2022-11-23 14:55:12,024 INFO L78 Accepts]: Start accepts. Automaton has 2064 states and 2985 transitions. Word has length 78 [2022-11-23 14:55:12,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:12,025 INFO L495 AbstractCegarLoop]: Abstraction has 2064 states and 2985 transitions. [2022-11-23 14:55:12,025 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) [2022-11-23 14:55:12,025 INFO L276 IsEmpty]: Start isEmpty. Operand 2064 states and 2985 transitions. [2022-11-23 14:55:12,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 14:55:12,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:12,035 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] [2022-11-23 14:55:12,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:55:12,036 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:55:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1160071153, now seen corresponding path program 1 times [2022-11-23 14:55:12,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:12,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106091446] [2022-11-23 14:55:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:12,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:12,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:55:12,845 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:12,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106091446] [2022-11-23 14:55:12,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106091446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:55:12,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:55:12,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:55:12,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158735623] [2022-11-23 14:55:12,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:55:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:55:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:55:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:55:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:55:12,849 INFO L87 Difference]: Start difference. First operand 2064 states and 2985 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) [2022-11-23 14:55:15,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:16,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:55:20,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:55:20,957 INFO L93 Difference]: Finished difference Result 8052 states and 12056 transitions. [2022-11-23 14:55:20,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:55:20,957 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 [2022-11-23 14:55:20,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:55:20,994 INFO L225 Difference]: With dead ends: 8052 [2022-11-23 14:55:20,994 INFO L226 Difference]: Without dead ends: 6009 [2022-11-23 14:55:21,006 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 [2022-11-23 14:55:21,009 INFO L413 NwaCegarLoop]: 2106 mSDtfsCounter, 979 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 5193 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:55:21,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 5193 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [336 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-23 14:55:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6009 states. [2022-11-23 14:55:21,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6009 to 2070. [2022-11-23 14:55:21,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1279 states have (on average 1.2525410476935106) internal successors, (1602), 1323 states have internal predecessors, (1602), 695 states have call successors, (695), 97 states have call predecessors, (695), 95 states have return successors, (696), 679 states have call predecessors, (696), 693 states have call successors, (696) [2022-11-23 14:55:21,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2993 transitions. [2022-11-23 14:55:21,287 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2993 transitions. Word has length 105 [2022-11-23 14:55:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:55:21,289 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 2993 transitions. [2022-11-23 14:55:21,290 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) [2022-11-23 14:55:21,290 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2993 transitions. [2022-11-23 14:55:21,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 14:55:21,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:55:21,296 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] [2022-11-23 14:55:21,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:55:21,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:55:21,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:55:21,298 INFO L85 PathProgramCache]: Analyzing trace with hash 540682074, now seen corresponding path program 1 times [2022-11-23 14:55:21,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:55:21,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845451898] [2022-11-23 14:55:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:21,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:55:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:55:21,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:55:21,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845451898] [2022-11-23 14:55:21,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845451898] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:55:21,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984855290] [2022-11-23 14:55:21,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:55:21,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:55:21,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:55:21,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:55:21,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ec73db9-1706-4b48-b31b-23cd439dc7d9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:55:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:55:23,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 3157 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:55:23,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:55:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-23 14:55:23,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:55:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 14:55:23,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984855290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:55:23,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [927254862] [2022-11-23 14:55:23,499 INFO L159 IcfgInterpreter]: Started Sifa with 100 locations of interest [2022-11-23 14:55:23,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:55:23,503 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:55:23,509 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:55:23,510 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:55:28,417 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 [2022-11-23 14:55:29,057 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 [2022-11-23 14:55:29,555 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 [2022-11-23 14:55:29,961 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 [2022-11-23 14:55:30,439 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 [2022-11-23 14:55:30,824 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 [2022-11-23 14:55:31,162 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 [2022-11-23 14:55:31,953 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 [2022-11-23 14:55:32,946 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 [2022-11-23 14:56:11,158 INFO L197 IcfgInterpreter]: Interpreting procedure whiteheat_init with input of size 3127 for LOIs [2022-11-23 14:57:05,844 INFO L197 IcfgInterpreter]: Interpreting procedure usb_serial_register with input of size 3131 for LOIs [2022-11-23 14:57:10,717 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:58:30,172 WARN L233 SmtUtils]: Spent 1.32m on a formula simplification that was a NOOP. DAG size: 3127 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:59:50,175 WARN L233 SmtUtils]: Spent 1.33m on a formula simplification that was a NOOP. DAG size: 3131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:01:12,086 WARN L233 SmtUtils]: Spent 1.36m on a formula simplification that was a NOOP. DAG size: 3141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:03:56,545 WARN L233 SmtUtils]: Spent 2.73m on a formula simplification. DAG size of input: 3149 DAG size of output: 3137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 15:06:42,844 WARN L233 SmtUtils]: Spent 2.76m on a formula simplification. DAG size of input: 3149 DAG size of output: 3137 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)