./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 5e519f3a 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_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/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_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI --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-5e519f3 [2022-11-03 02:06:57,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:57,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:57,038 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:57,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:57,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:57,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:57,043 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:57,045 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:57,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:57,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:57,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:57,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:57,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:57,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:57,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:57,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:57,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:57,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:57,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:57,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:57,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:57,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:57,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:57,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:57,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:57,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:57,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:57,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:57,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:57,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:57,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:57,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:57,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:57,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:57,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:57,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:57,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:57,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:57,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:57,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:57,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:06:57,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:57,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:57,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:57,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:57,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:57,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:57,108 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:57,108 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:57,109 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:57,109 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:57,109 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:57,109 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:57,110 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:57,110 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:57,110 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:57,111 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:57,111 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:57,111 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:57,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:57,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:57,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:57,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:57,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:57,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:57,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:57,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:57,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:57,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:57,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:57,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:57,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:57,116 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:57,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:57,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:57,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:57,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:57,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:57,117 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:57,118 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_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2bc647ca8745ce6966563490eaffac57a1a11e1ae3ccf6c64fee22f81541d7 [2022-11-03 02:06:57,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:57,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:57,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:57,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:57,430 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:57,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-03 02:06:57,502 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/data/cc510671e/cdadff5889b74d57bf073f3901cfd0f6/FLAG7aa642d86 [2022-11-03 02:06:58,302 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:58,302 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-03 02:06:58,350 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/data/cc510671e/cdadff5889b74d57bf073f3901cfd0f6/FLAG7aa642d86 [2022-11-03 02:06:58,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/data/cc510671e/cdadff5889b74d57bf073f3901cfd0f6 [2022-11-03 02:06:58,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:58,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:58,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:58,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:58,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:58,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:58" (1/1) ... [2022-11-03 02:06:58,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1924c1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:58, skipping insertion in model container [2022-11-03 02:06:58,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:58" (1/1) ... [2022-11-03 02:06:58,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:58,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:07:00,335 WARN L230 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_b65fd9ab-e304-4aab-964e-c80ac7177f74/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-03 02:07:00,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:00,427 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:07:00,920 WARN L230 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_b65fd9ab-e304-4aab-964e-c80ac7177f74/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i[223543,223556] [2022-11-03 02:07:00,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:07:01,041 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:07:01,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01 WrapperNode [2022-11-03 02:07:01,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:07:01,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:01,043 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:07:01,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:07:01,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,269 INFO L138 Inliner]: procedures = 167, calls = 1419, calls flagged for inlining = 71, calls inlined = 71, statements flattened = 4336 [2022-11-03 02:07:01,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:07:01,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:07:01,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:07:01,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:07:01,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,378 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,415 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:07:01,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:07:01,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:07:01,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:07:01,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (1/1) ... [2022-11-03 02:07:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:07:01,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:01,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:07:01,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:07:01,605 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:07:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_exit [2022-11-03 02:07:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_exit [2022-11-03 02:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-03 02:07:01,606 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-03 02:07:01,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-03 02:07:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-03 02:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2022-11-03 02:07:01,607 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2022-11-03 02:07:01,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:07:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:07:01,608 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_writememory [2022-11-03 02:07:01,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_writememory [2022-11-03 02:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-03 02:07:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-03 02:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:07:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure firm_send_command [2022-11-03 02:07:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_send_command [2022-11-03 02:07:01,609 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-11-03 02:07:01,609 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-11-03 02:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:07:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2022-11-03 02:07:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2022-11-03 02:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:07:01,610 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:07:01,610 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2022-11-03 02:07:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2022-11-03 02:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2022-11-03 02:07:01,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2022-11-03 02:07:01,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 02:07:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 02:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-03 02:07:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-03 02:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure request_ihex_firmware [2022-11-03 02:07:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure request_ihex_firmware [2022-11-03 02:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2022-11-03 02:07:01,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2022-11-03 02:07:01,612 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_attach [2022-11-03 02:07:01,613 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_attach [2022-11-03 02:07:01,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:07:01,614 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2022-11-03 02:07:01,614 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2022-11-03 02:07:01,615 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:07:01,615 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:07:01,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:07:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:07:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:07:01,617 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-03 02:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ihex_next_binrec [2022-11-03 02:07:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ihex_next_binrec [2022-11-03 02:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-03 02:07:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-03 02:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ezusb_set_reset [2022-11-03 02:07:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ezusb_set_reset [2022-11-03 02:07:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure urb_to_wrap [2022-11-03 02:07:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_to_wrap [2022-11-03 02:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:07:01,619 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-11-03 02:07:01,619 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-11-03 02:07:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure firm_setup_port [2022-11-03 02:07:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_setup_port [2022-11-03 02:07:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-03 02:07:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-03 02:07:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:07:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:07:01,623 INFO L130 BoogieDeclarations]: Found specification of procedure list_first [2022-11-03 02:07:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure list_first [2022-11-03 02:07:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-03 02:07:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-03 02:07:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:07:01,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:07:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure firm_close [2022-11-03 02:07:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure firm_close [2022-11-03 02:07:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-03 02:07:01,625 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-03 02:07:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2022-11-03 02:07:01,626 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2022-11-03 02:07:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2022-11-03 02:07:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2022-11-03 02:07:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-03 02:07:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-03 02:07:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:07:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:07:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure stop_command_port [2022-11-03 02:07:01,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_command_port [2022-11-03 02:07:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:07:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:07:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-03 02:07:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-03 02:07:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:07:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:07:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:07:01,631 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:07:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2022-11-03 02:07:01,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2022-11-03 02:07:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:07:01,631 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:07:01,632 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2022-11-03 02:07:01,633 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2022-11-03 02:07:01,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:07:01,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_clear_halt [2022-11-03 02:07:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_clear_halt [2022-11-03 02:07:01,636 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-11-03 02:07:01,636 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-11-03 02:07:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:07:01,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:07:01,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:07:01,638 INFO L130 BoogieDeclarations]: Found specification of procedure whiteheat_init [2022-11-03 02:07:01,644 INFO L138 BoogieDeclarations]: Found implementation of procedure whiteheat_init [2022-11-03 02:07:02,284 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:07:02,290 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:07:02,686 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:07:02,847 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !false; [2022-11-03 02:07:02,847 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume false; [2022-11-03 02:07:02,860 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:07:03,054 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !false; [2022-11-03 02:07:03,055 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume false; [2022-11-03 02:07:03,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2022-11-03 02:07:03,608 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:07:03,630 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:07:05,584 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##395: assume !false; [2022-11-03 02:07:05,584 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##394: assume false; [2022-11-03 02:07:05,584 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !false; [2022-11-03 02:07:05,584 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume false; [2022-11-03 02:07:05,677 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:07:06,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:07:06,799 INFO L300 CfgBuilder]: Removed 94 assume(true) statements. [2022-11-03 02:07:06,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:06 BoogieIcfgContainer [2022-11-03 02:07:06,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:07:06,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:07:06,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:07:06,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:07:06,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:58" (1/3) ... [2022-11-03 02:07:06,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a985efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:06, skipping insertion in model container [2022-11-03 02:07:06,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:07:01" (2/3) ... [2022-11-03 02:07:06,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a985efe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:07:06, skipping insertion in model container [2022-11-03 02:07:06,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:07:06" (3/3) ... [2022-11-03 02:07:06,812 INFO L112 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-whiteheat.ko.cil.out.i [2022-11-03 02:07:06,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:07:06,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:07:06,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:07:06,909 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;@e8903f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:07:06,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:07:06,916 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) [2022-11-03 02:07:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:07:06,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:06,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:06,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:06,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1815393386, now seen corresponding path program 1 times [2022-11-03 02:07:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:06,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179267548] [2022-11-03 02:07:06,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:06,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:07,763 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:07,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179267548] [2022-11-03 02:07:07,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179267548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:07,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:07,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:07,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617381201] [2022-11-03 02:07:07,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:07,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:07,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:07,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:07,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:07,812 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) [2022-11-03 02:07:12,082 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 [] [2022-11-03 02:07:12,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:12,605 INFO L93 Difference]: Finished difference Result 2304 states and 3487 transitions. [2022-11-03 02:07:12,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:12,608 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 [2022-11-03 02:07:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:12,631 INFO L225 Difference]: With dead ends: 2304 [2022-11-03 02:07:12,632 INFO L226 Difference]: Without dead ends: 1523 [2022-11-03 02:07:12,643 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 [2022-11-03 02:07:12,646 INFO L413 NwaCegarLoop]: 1220 mSDtfsCounter, 1059 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 114 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:12,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 2172 Invalid, 390 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [114 Valid, 275 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2022-11-03 02:07:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-03 02:07:12,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1519. [2022-11-03 02:07:12,802 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) [2022-11-03 02:07:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2144 transitions. [2022-11-03 02:07:12,817 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2144 transitions. Word has length 17 [2022-11-03 02:07:12,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:12,817 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2144 transitions. [2022-11-03 02:07:12,818 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) [2022-11-03 02:07:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2144 transitions. [2022-11-03 02:07:12,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:07:12,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:12,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:12,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:12,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -443107602, now seen corresponding path program 1 times [2022-11-03 02:07:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:12,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82704828] [2022-11-03 02:07:12,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:12,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:07:13,144 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:13,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82704828] [2022-11-03 02:07:13,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82704828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:13,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:13,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013626472] [2022-11-03 02:07:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:13,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:13,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:13,155 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) [2022-11-03 02:07:15,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:15,880 INFO L93 Difference]: Finished difference Result 1521 states and 2145 transitions. [2022-11-03 02:07:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:15,881 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 [2022-11-03 02:07:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:15,895 INFO L225 Difference]: With dead ends: 1521 [2022-11-03 02:07:15,895 INFO L226 Difference]: Without dead ends: 1509 [2022-11-03 02:07:15,896 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 [2022-11-03 02:07:15,898 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 1104 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:15,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 974 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-03 02:07:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2022-11-03 02:07:16,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2022-11-03 02:07:16,074 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) [2022-11-03 02:07:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2127 transitions. [2022-11-03 02:07:16,087 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2127 transitions. Word has length 18 [2022-11-03 02:07:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:16,088 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2127 transitions. [2022-11-03 02:07:16,088 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) [2022-11-03 02:07:16,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2127 transitions. [2022-11-03 02:07:16,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:07:16,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:16,105 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] [2022-11-03 02:07:16,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:16,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2111527543, now seen corresponding path program 1 times [2022-11-03 02:07:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:16,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394540048] [2022-11-03 02:07:16,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:16,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:16,905 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:07:16,906 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:16,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394540048] [2022-11-03 02:07:16,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394540048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:16,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:16,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:07:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373331106] [2022-11-03 02:07:16,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:16,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:07:16,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:07:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:07:16,914 INFO L87 Difference]: Start difference. First operand 1509 states and 2127 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:07:21,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:23,417 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 [] [2022-11-03 02:07:24,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:24,843 INFO L93 Difference]: Finished difference Result 3001 states and 4232 transitions. [2022-11-03 02:07:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:07:24,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 78 [2022-11-03 02:07:24,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:24,854 INFO L225 Difference]: With dead ends: 3001 [2022-11-03 02:07:24,854 INFO L226 Difference]: Without dead ends: 1504 [2022-11-03 02:07:24,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:07:24,861 INFO L413 NwaCegarLoop]: 970 mSDtfsCounter, 2 mSDsluCounter, 4408 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4837 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:24,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4837 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 695 Invalid, 1 Unknown, 0 Unchecked, 7.8s Time] [2022-11-03 02:07:24,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2022-11-03 02:07:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2022-11-03 02:07:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 922 states have (on average 1.2407809110629067) internal successors, (1144), 950 states have internal predecessors, (1144), 487 states have call successors, (487), 96 states have call predecessors, (487), 94 states have return successors, (487), 477 states have call predecessors, (487), 485 states have call successors, (487) [2022-11-03 02:07:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 2118 transitions. [2022-11-03 02:07:24,949 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 2118 transitions. Word has length 78 [2022-11-03 02:07:24,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:24,949 INFO L495 AbstractCegarLoop]: Abstraction has 1504 states and 2118 transitions. [2022-11-03 02:07:24,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-03 02:07:24,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 2118 transitions. [2022-11-03 02:07:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-03 02:07:24,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:24,955 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 02:07:24,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:07:24,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:24,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:24,957 INFO L85 PathProgramCache]: Analyzing trace with hash 661732036, now seen corresponding path program 1 times [2022-11-03 02:07:24,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:24,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985847589] [2022-11-03 02:07:24,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:24,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:07:25,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:25,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985847589] [2022-11-03 02:07:25,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985847589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:25,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:25,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:25,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497760257] [2022-11-03 02:07:25,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:25,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:25,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:25,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:25,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:25,525 INFO L87 Difference]: Start difference. First operand 1504 states and 2118 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:07:28,208 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 [] [2022-11-03 02:07:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:29,857 INFO L93 Difference]: Finished difference Result 3552 states and 5091 transitions. [2022-11-03 02:07:29,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 83 [2022-11-03 02:07:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:29,870 INFO L225 Difference]: With dead ends: 3552 [2022-11-03 02:07:29,870 INFO L226 Difference]: Without dead ends: 2063 [2022-11-03 02:07:29,878 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 [2022-11-03 02:07:29,883 INFO L413 NwaCegarLoop]: 1128 mSDtfsCounter, 284 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:29,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2017 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 286 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-03 02:07:29,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2022-11-03 02:07:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 2059. [2022-11-03 02:07:30,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1273 states have (on average 1.251374705420267) internal successors, (1593), 1315 states have internal predecessors, (1593), 691 states have call successors, (691), 96 states have call predecessors, (691), 94 states have return successors, (692), 675 states have call predecessors, (692), 689 states have call successors, (692) [2022-11-03 02:07:30,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2976 transitions. [2022-11-03 02:07:30,015 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2976 transitions. Word has length 83 [2022-11-03 02:07:30,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:30,017 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 2976 transitions. [2022-11-03 02:07:30,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-03 02:07:30,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2976 transitions. [2022-11-03 02:07:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-03 02:07:30,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:30,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:30,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:07:30,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:30,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:30,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1695713398, now seen corresponding path program 1 times [2022-11-03 02:07:30,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:30,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311809356] [2022-11-03 02:07:30,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:30,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:07:30,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311809356] [2022-11-03 02:07:30,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311809356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:30,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:30,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:07:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592542522] [2022-11-03 02:07:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:30,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:07:30,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:30,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:07:30,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:07:30,611 INFO L87 Difference]: Start difference. First operand 2059 states and 2976 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:07:34,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:36,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:38,102 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 [] [2022-11-03 02:07:41,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:41,530 INFO L93 Difference]: Finished difference Result 8047 states and 12047 transitions. [2022-11-03 02:07:41,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:07:41,531 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 110 [2022-11-03 02:07:41,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:41,627 INFO L225 Difference]: With dead ends: 8047 [2022-11-03 02:07:41,630 INFO L226 Difference]: Without dead ends: 6004 [2022-11-03 02:07:41,638 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 [2022-11-03 02:07:41,642 INFO L413 NwaCegarLoop]: 2108 mSDtfsCounter, 978 mSDsluCounter, 3460 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 337 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1280 SdHoareTripleChecker+Valid, 5194 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:41,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1280 Valid, 5194 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 638 Invalid, 2 Unknown, 0 Unchecked, 10.5s Time] [2022-11-03 02:07:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2022-11-03 02:07:41,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 2065. [2022-11-03 02:07:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2065 states, 1277 states have (on average 1.250587314017228) internal successors, (1597), 1319 states have internal predecessors, (1597), 693 states have call successors, (693), 96 states have call predecessors, (693), 94 states have return successors, (694), 677 states have call predecessors, (694), 691 states have call successors, (694) [2022-11-03 02:07:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2065 states to 2065 states and 2984 transitions. [2022-11-03 02:07:41,898 INFO L78 Accepts]: Start accepts. Automaton has 2065 states and 2984 transitions. Word has length 110 [2022-11-03 02:07:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:41,900 INFO L495 AbstractCegarLoop]: Abstraction has 2065 states and 2984 transitions. [2022-11-03 02:07:41,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:07:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2065 states and 2984 transitions. [2022-11-03 02:07:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:07:41,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:41,911 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:41,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:07:41,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:41,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:41,912 INFO L85 PathProgramCache]: Analyzing trace with hash 60560649, now seen corresponding path program 1 times [2022-11-03 02:07:41,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:41,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799530314] [2022-11-03 02:07:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:41,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:42,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:07:42,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799530314] [2022-11-03 02:07:42,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799530314] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:42,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073640165] [2022-11-03 02:07:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:42,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:42,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:42,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b65fd9ab-e304-4aab-964e-c80ac7177f74/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:07:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:43,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:43,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:07:43,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:07:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-03 02:07:43,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073640165] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:07:43,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1610633760] [2022-11-03 02:07:44,022 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2022-11-03 02:07:44,022 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:07:44,026 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:07:44,032 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:07:44,033 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:07:48,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:49,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:49,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:50,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:50,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:50,725 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:51,067 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:51,686 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:07:52,760 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-11-03 02:09:40,743 INFO L356 Elim1Store]: treesize reduction 66, result has 41.6 percent of original size [2022-11-03 02:09:40,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 119 [2022-11-03 02:09:40,845 INFO L356 Elim1Store]: treesize reduction 44, result has 48.2 percent of original size [2022-11-03 02:09:40,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 124 [2022-11-03 02:09:40,910 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 02:09:40,911 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 25 [2022-11-03 02:11:20,376 INFO L356 Elim1Store]: treesize reduction 66, result has 41.6 percent of original size [2022-11-03 02:11:20,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 120 treesize of output 119 [2022-11-03 02:11:20,467 INFO L356 Elim1Store]: treesize reduction 44, result has 48.2 percent of original size [2022-11-03 02:11:20,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 124 [2022-11-03 02:11:20,530 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-11-03 02:11:20,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 25 [2022-11-03 02:11:37,832 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_lock_nested with input of size 129 for LOIs [2022-11-03 02:11:37,844 INFO L197 IcfgInterpreter]: Interpreting procedure whiteheat_init with input of size 3127 for LOIs [2022-11-03 02:13:22,413 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_check_return_value with input of size 135 for LOIs [2022-11-03 02:13:22,422 INFO L197 IcfgInterpreter]: Interpreting procedure mutex_unlock with input of size 127 for LOIs [2022-11-03 02:13:22,431 INFO L197 IcfgInterpreter]: Interpreting procedure usb_submit_urb with input of size 246 for LOIs [2022-11-03 02:13:22,510 INFO L197 IcfgInterpreter]: Interpreting procedure usb_clear_halt with input of size 174 for LOIs [2022-11-03 02:13:22,574 INFO L197 IcfgInterpreter]: Interpreting procedure usb_serial_register with input of size 3244 for LOIs [2022-11-03 02:13:45,152 INFO L197 IcfgInterpreter]: Interpreting procedure usb_get_serial_port_data with input of size 3160 for LOIs [2022-11-03 02:13:56,123 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:15:43,397 WARN L234 SmtUtils]: Spent 1.78m on a formula simplification that was a NOOP. DAG size: 3127 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)