./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/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_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/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_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/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 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b --- 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 01:42:01,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:42:01,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:42:01,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:42:01,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:42:01,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:42:01,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:42:01,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:42:01,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:42:01,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:42:01,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:42:01,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:42:01,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:42:01,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:42:01,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:42:01,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:42:01,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:42:01,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:42:01,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:42:01,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:42:01,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:42:01,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:42:01,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:42:01,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:42:01,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:42:01,270 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:42:01,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:42:01,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:42:01,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:42:01,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:42:01,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:42:01,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:42:01,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:42:01,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:42:01,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:42:01,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:42:01,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:42:01,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:42:01,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:42:01,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:42:01,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:42:01,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:42:01,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:42:01,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:42:01,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:42:01,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:42:01,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:42:01,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:42:01,325 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:42:01,325 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:42:01,325 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:42:01,325 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:42:01,326 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:42:01,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:42:01,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:42:01,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:42:01,327 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:42:01,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:42:01,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:42:01,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:42:01,329 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:42:01,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:42:01,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:42:01,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:42:01,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:42:01,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:42:01,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:42:01,330 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:42:01,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:42:01,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:42:01,330 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:42:01,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:01,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:42:01,331 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:42:01,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:42:01,333 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_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3acbab6b9aaee88273e5c2573b1301b2b4d4059e0d0ec0927c600e9ad855395b [2022-11-03 01:42:01,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:42:01,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:42:01,688 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:42:01,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:42:01,690 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:42:01,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-03 01:42:01,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/data/c432846fd/5e95b2ef1a1640789784cf29bdc0ff40/FLAGbab6e0b24 [2022-11-03 01:42:02,542 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:42:02,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-03 01:42:02,598 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/data/c432846fd/5e95b2ef1a1640789784cf29bdc0ff40/FLAGbab6e0b24 [2022-11-03 01:42:03,099 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/data/c432846fd/5e95b2ef1a1640789784cf29bdc0ff40 [2022-11-03 01:42:03,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:42:03,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:42:03,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:03,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:42:03,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:42:03,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:03" (1/1) ... [2022-11-03 01:42:03,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c6e7e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:03, skipping insertion in model container [2022-11-03 01:42:03,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:42:03" (1/1) ... [2022-11-03 01:42:03,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:42:03,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:42:04,170 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_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2022-11-03 01:42:04,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:04,425 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:42:04,589 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_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i[185252,185265] [2022-11-03 01:42:04,625 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:42:04,749 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:42:04,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04 WrapperNode [2022-11-03 01:42:04,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:42:04,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:04,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:42:04,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:42:04,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,892 INFO L138 Inliner]: procedures = 117, calls = 568, calls flagged for inlining = 30, calls inlined = 25, statements flattened = 1081 [2022-11-03 01:42:04,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:42:04,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:42:04,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:42:04,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:42:04,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:04,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:05,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:05,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:05,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:05,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:42:05,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:42:05,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:42:05,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:42:05,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (1/1) ... [2022-11-03 01:42:05,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:42:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:42:05,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:42:05,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:42:05,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 01:42:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 01:42:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:42:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 01:42:05,117 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 01:42:05,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2022-11-03 01:42:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2022-11-03 01:42:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-11-03 01:42:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-11-03 01:42:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 01:42:05,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 01:42:05,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 01:42:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 01:42:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 01:42:05,119 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 01:42:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:42:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:42:05,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2022-11-03 01:42:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2022-11-03 01:42:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-03 01:42:05,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-03 01:42:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:42:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:42:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:42:05,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 01:42:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2022-11-03 01:42:05,121 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2022-11-03 01:42:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:42:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:42:05,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:42:05,484 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:42:05,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:42:05,612 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 01:42:06,692 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:42:06,853 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:42:06,853 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:42:06,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:06 BoogieIcfgContainer [2022-11-03 01:42:06,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:42:06,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:42:06,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:42:06,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:42:06,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:42:03" (1/3) ... [2022-11-03 01:42:06,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2602c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:06, skipping insertion in model container [2022-11-03 01:42:06,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:42:04" (2/3) ... [2022-11-03 01:42:06,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58b2602c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:42:06, skipping insertion in model container [2022-11-03 01:42:06,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:06" (3/3) ... [2022-11-03 01:42:06,867 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2022-11-03 01:42:06,887 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:42:06,887 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:42:06,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:42:06,977 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;@10a9aa78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:42:06,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:42:06,982 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 100 states have (on average 1.55) internal successors, (155), 116 states have internal predecessors, (155), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-03 01:42:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-03 01:42:06,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:06,994 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:06,995 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1946432061, now seen corresponding path program 1 times [2022-11-03 01:42:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138933149] [2022-11-03 01:42:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:07,994 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 01:42:07,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:07,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138933149] [2022-11-03 01:42:07,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138933149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:07,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:07,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:07,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390903922] [2022-11-03 01:42:08,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:08,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:08,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:08,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:08,054 INFO L87 Difference]: Start difference. First operand has 145 states, 100 states have (on average 1.55) internal successors, (155), 116 states have internal predecessors, (155), 34 states have call successors, (34), 10 states have call predecessors, (34), 9 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:42:08,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:08,320 INFO L93 Difference]: Finished difference Result 391 states and 579 transitions. [2022-11-03 01:42:08,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 86 [2022-11-03 01:42:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:08,342 INFO L225 Difference]: With dead ends: 391 [2022-11-03 01:42:08,356 INFO L226 Difference]: Without dead ends: 238 [2022-11-03 01:42:08,360 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 01:42:08,364 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 159 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:08,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 377 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:42:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-03 01:42:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 234. [2022-11-03 01:42:08,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 180 states have (on average 1.4444444444444444) internal successors, (260), 185 states have internal predecessors, (260), 37 states have call successors, (37), 17 states have call predecessors, (37), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-03 01:42:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 328 transitions. [2022-11-03 01:42:08,455 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 328 transitions. Word has length 86 [2022-11-03 01:42:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:08,457 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 328 transitions. [2022-11-03 01:42:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-03 01:42:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 328 transitions. [2022-11-03 01:42:08,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 01:42:08,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:08,470 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:08,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:42:08,472 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:08,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:08,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1582708866, now seen corresponding path program 1 times [2022-11-03 01:42:08,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:08,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481632026] [2022-11-03 01:42:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:08,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-03 01:42:08,947 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481632026] [2022-11-03 01:42:08,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481632026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:08,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:08,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:08,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626932216] [2022-11-03 01:42:08,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:08,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:08,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:08,951 INFO L87 Difference]: Start difference. First operand 234 states and 328 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:09,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:09,104 INFO L93 Difference]: Finished difference Result 503 states and 717 transitions. [2022-11-03 01:42:09,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:09,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 89 [2022-11-03 01:42:09,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:09,108 INFO L225 Difference]: With dead ends: 503 [2022-11-03 01:42:09,108 INFO L226 Difference]: Without dead ends: 293 [2022-11-03 01:42:09,109 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 01:42:09,111 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 141 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:09,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 330 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:09,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-11-03 01:42:09,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 270. [2022-11-03 01:42:09,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 215 states have (on average 1.4883720930232558) internal successors, (320), 220 states have internal predecessors, (320), 39 states have call successors, (39), 16 states have call predecessors, (39), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-03 01:42:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 392 transitions. [2022-11-03 01:42:09,138 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 392 transitions. Word has length 89 [2022-11-03 01:42:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:09,139 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 392 transitions. [2022-11-03 01:42:09,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 392 transitions. [2022-11-03 01:42:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 01:42:09,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:09,142 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:09,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:42:09,142 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:09,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:09,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1125509975, now seen corresponding path program 1 times [2022-11-03 01:42:09,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:09,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34003320] [2022-11-03 01:42:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:09,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 01:42:09,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:09,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34003320] [2022-11-03 01:42:09,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34003320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:09,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:09,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:09,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4173797] [2022-11-03 01:42:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:09,485 INFO L87 Difference]: Start difference. First operand 270 states and 392 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:09,591 INFO L93 Difference]: Finished difference Result 272 states and 393 transitions. [2022-11-03 01:42:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:09,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2022-11-03 01:42:09,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:09,598 INFO L225 Difference]: With dead ends: 272 [2022-11-03 01:42:09,598 INFO L226 Difference]: Without dead ends: 269 [2022-11-03 01:42:09,599 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 01:42:09,603 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:09,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 162 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-03 01:42:09,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-03 01:42:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 215 states have (on average 1.4837209302325582) internal successors, (319), 219 states have internal predecessors, (319), 38 states have call successors, (38), 16 states have call predecessors, (38), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-03 01:42:09,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 390 transitions. [2022-11-03 01:42:09,644 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 390 transitions. Word has length 100 [2022-11-03 01:42:09,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:09,649 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 390 transitions. [2022-11-03 01:42:09,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 390 transitions. [2022-11-03 01:42:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 01:42:09,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:09,659 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:09,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:42:09,660 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:09,661 INFO L85 PathProgramCache]: Analyzing trace with hash 531084587, now seen corresponding path program 1 times [2022-11-03 01:42:09,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:09,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121127933] [2022-11-03 01:42:09,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:09,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:10,099 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 01:42:10,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:10,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121127933] [2022-11-03 01:42:10,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121127933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:10,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:10,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:10,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790401362] [2022-11-03 01:42:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:10,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:10,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:10,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:10,107 INFO L87 Difference]: Start difference. First operand 269 states and 390 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:10,211 INFO L93 Difference]: Finished difference Result 271 states and 391 transitions. [2022-11-03 01:42:10,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:10,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2022-11-03 01:42:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:10,223 INFO L225 Difference]: With dead ends: 271 [2022-11-03 01:42:10,223 INFO L226 Difference]: Without dead ends: 268 [2022-11-03 01:42:10,225 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 01:42:10,228 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:10,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 160 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-03 01:42:10,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-11-03 01:42:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 215 states have (on average 1.4790697674418605) internal successors, (318), 218 states have internal predecessors, (318), 37 states have call successors, (37), 16 states have call predecessors, (37), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-03 01:42:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 388 transitions. [2022-11-03 01:42:10,264 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 388 transitions. Word has length 101 [2022-11-03 01:42:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:10,265 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 388 transitions. [2022-11-03 01:42:10,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:10,265 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 388 transitions. [2022-11-03 01:42:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 01:42:10,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:10,268 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:10,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:42:10,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:10,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:10,269 INFO L85 PathProgramCache]: Analyzing trace with hash -716228390, now seen corresponding path program 1 times [2022-11-03 01:42:10,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:10,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682881941] [2022-11-03 01:42:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:10,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:10,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:10,594 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 01:42:10,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:10,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682881941] [2022-11-03 01:42:10,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682881941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:10,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:10,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:10,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602104331] [2022-11-03 01:42:10,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:10,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:10,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:10,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:10,604 INFO L87 Difference]: Start difference. First operand 268 states and 388 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:10,730 INFO L93 Difference]: Finished difference Result 270 states and 389 transitions. [2022-11-03 01:42:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 102 [2022-11-03 01:42:10,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:10,733 INFO L225 Difference]: With dead ends: 270 [2022-11-03 01:42:10,733 INFO L226 Difference]: Without dead ends: 267 [2022-11-03 01:42:10,734 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 01:42:10,735 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 151 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:10,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 158 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-03 01:42:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-11-03 01:42:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 215 states have (on average 1.4744186046511627) internal successors, (317), 217 states have internal predecessors, (317), 36 states have call successors, (36), 16 states have call predecessors, (36), 15 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-03 01:42:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 386 transitions. [2022-11-03 01:42:10,764 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 386 transitions. Word has length 102 [2022-11-03 01:42:10,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:10,766 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 386 transitions. [2022-11-03 01:42:10,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:10,766 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 386 transitions. [2022-11-03 01:42:10,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 01:42:10,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:10,768 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:42:10,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:42:10,768 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:10,769 INFO L85 PathProgramCache]: Analyzing trace with hash -728220146, now seen corresponding path program 1 times [2022-11-03 01:42:10,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:10,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668719188] [2022-11-03 01:42:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:10,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 01:42:11,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:11,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668719188] [2022-11-03 01:42:11,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668719188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:11,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:11,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066697675] [2022-11-03 01:42:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:11,082 INFO L87 Difference]: Start difference. First operand 267 states and 386 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:11,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:11,248 INFO L93 Difference]: Finished difference Result 619 states and 899 transitions. [2022-11-03 01:42:11,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:11,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 103 [2022-11-03 01:42:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:11,258 INFO L225 Difference]: With dead ends: 619 [2022-11-03 01:42:11,258 INFO L226 Difference]: Without dead ends: 435 [2022-11-03 01:42:11,262 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 01:42:11,263 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 141 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:11,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 312 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-03 01:42:11,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 432. [2022-11-03 01:42:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 352 states have (on average 1.4801136363636365) internal successors, (521), 354 states have internal predecessors, (521), 55 states have call successors, (55), 26 states have call predecessors, (55), 24 states have return successors, (52), 51 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-03 01:42:11,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 628 transitions. [2022-11-03 01:42:11,306 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 628 transitions. Word has length 103 [2022-11-03 01:42:11,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:11,307 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 628 transitions. [2022-11-03 01:42:11,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-03 01:42:11,307 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 628 transitions. [2022-11-03 01:42:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-03 01:42:11,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:11,311 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-03 01:42:11,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:42:11,312 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:11,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:11,312 INFO L85 PathProgramCache]: Analyzing trace with hash -253750851, now seen corresponding path program 1 times [2022-11-03 01:42:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:11,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073720474] [2022-11-03 01:42:11,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2022-11-03 01:42:11,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073720474] [2022-11-03 01:42:11,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073720474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:11,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:11,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:42:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506915027] [2022-11-03 01:42:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:11,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:42:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:42:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:42:11,666 INFO L87 Difference]: Start difference. First operand 432 states and 628 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 01:42:11,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:11,849 INFO L93 Difference]: Finished difference Result 778 states and 1130 transitions. [2022-11-03 01:42:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:42:11,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 117 [2022-11-03 01:42:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:11,853 INFO L225 Difference]: With dead ends: 778 [2022-11-03 01:42:11,854 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 01:42:11,855 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 01:42:11,856 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 150 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:11,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 424 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 01:42:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 432. [2022-11-03 01:42:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 352 states have (on average 1.4744318181818181) internal successors, (519), 354 states have internal predecessors, (519), 55 states have call successors, (55), 26 states have call predecessors, (55), 24 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-03 01:42:11,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 625 transitions. [2022-11-03 01:42:11,895 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 625 transitions. Word has length 117 [2022-11-03 01:42:11,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:11,896 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 625 transitions. [2022-11-03 01:42:11,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-03 01:42:11,896 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 625 transitions. [2022-11-03 01:42:11,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-03 01:42:11,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:11,898 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-03 01:42:11,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:42:11,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:11,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1098078664, now seen corresponding path program 1 times [2022-11-03 01:42:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:11,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578104141] [2022-11-03 01:42:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-03 01:42:12,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578104141] [2022-11-03 01:42:12,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578104141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:12,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:12,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 01:42:12,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820638432] [2022-11-03 01:42:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:12,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 01:42:12,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 01:42:12,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:42:12,643 INFO L87 Difference]: Start difference. First operand 432 states and 625 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-03 01:42:13,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:13,031 INFO L93 Difference]: Finished difference Result 1038 states and 1545 transitions. [2022-11-03 01:42:13,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:42:13,032 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2022-11-03 01:42:13,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:13,035 INFO L225 Difference]: With dead ends: 1038 [2022-11-03 01:42:13,036 INFO L226 Difference]: Without dead ends: 694 [2022-11-03 01:42:13,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:42:13,037 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 205 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:13,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 1890 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:42:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-03 01:42:13,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 432. [2022-11-03 01:42:13,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 353 states have (on average 1.4702549575070822) internal successors, (519), 354 states have internal predecessors, (519), 54 states have call successors, (54), 26 states have call predecessors, (54), 24 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-03 01:42:13,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 624 transitions. [2022-11-03 01:42:13,079 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 624 transitions. Word has length 121 [2022-11-03 01:42:13,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:13,079 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 624 transitions. [2022-11-03 01:42:13,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-03 01:42:13,080 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 624 transitions. [2022-11-03 01:42:13,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-03 01:42:13,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:42:13,082 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:13,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:42:13,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:42:13,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:42:13,083 INFO L85 PathProgramCache]: Analyzing trace with hash 851409998, now seen corresponding path program 1 times [2022-11-03 01:42:13,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:42:13,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308923060] [2022-11-03 01:42:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:42:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:42:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:42:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-03 01:42:13,574 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:42:13,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308923060] [2022-11-03 01:42:13,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308923060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:42:13,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:42:13,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:42:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14899206] [2022-11-03 01:42:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:42:13,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:42:13,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:42:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:42:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:42:13,578 INFO L87 Difference]: Start difference. First operand 432 states and 624 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-11-03 01:42:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:42:13,769 INFO L93 Difference]: Finished difference Result 560 states and 830 transitions. [2022-11-03 01:42:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:42:13,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 130 [2022-11-03 01:42:13,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:42:13,770 INFO L225 Difference]: With dead ends: 560 [2022-11-03 01:42:13,770 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:42:13,771 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 01:42:13,774 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 195 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:42:13,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 550 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:42:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:42:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:42:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:42:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:42:13,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2022-11-03 01:42:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:42:13,777 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:42:13,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-11-03 01:42:13,777 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:42:13,777 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:42:13,780 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:42:13,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 01:42:13,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:42:15,338 INFO L902 garLoopResultBuilder]: At program point usbnet_disconnectENTRY(lines 7015 7017) the Hoare annotation is: true [2022-11-03 01:42:15,338 INFO L899 garLoopResultBuilder]: For program point usbnet_disconnectEXIT(lines 7015 7017) no Hoare annotation was computed. [2022-11-03 01:42:15,338 INFO L895 garLoopResultBuilder]: At program point ldv_mutex_lock_udevENTRY(lines 6853 6863) the Hoare annotation is: (or (not (= |old(~ldv_mutex_udev~0)| 1)) (not (= ~ldv_mutex_lock~0 1)) (not (= ~ldv_mutex_i_mutex_of_inode~0 1)) (not (= 1 ~ldv_mutex_mutex_of_device~0)) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,338 INFO L899 garLoopResultBuilder]: For program point L6856-1(lines 6856 6859) no Hoare annotation was computed. [2022-11-03 01:42:15,338 INFO L899 garLoopResultBuilder]: For program point L6856(lines 6856 6859) no Hoare annotation was computed. [2022-11-03 01:42:15,339 INFO L895 garLoopResultBuilder]: At program point L6857(line 6857) the Hoare annotation is: (or (not (= |old(~ldv_mutex_udev~0)| 1)) (not (= ~ldv_mutex_lock~0 1)) (not (= ~ldv_mutex_i_mutex_of_inode~0 1)) (not (= 1 ~ldv_mutex_mutex_of_device~0))) [2022-11-03 01:42:15,339 INFO L899 garLoopResultBuilder]: For program point ldv_mutex_lock_udevEXIT(lines 6853 6863) no Hoare annotation was computed. [2022-11-03 01:42:15,339 INFO L899 garLoopResultBuilder]: For program point L5762-1(line 5762) no Hoare annotation was computed. [2022-11-03 01:42:15,339 INFO L899 garLoopResultBuilder]: For program point ldv_init_zallocEXIT(lines 5757 5767) no Hoare annotation was computed. [2022-11-03 01:42:15,339 INFO L902 garLoopResultBuilder]: At program point ldv_init_zallocENTRY(lines 5757 5767) the Hoare annotation is: true [2022-11-03 01:42:15,339 INFO L899 garLoopResultBuilder]: For program point L5764-1(line 5764) no Hoare annotation was computed. [2022-11-03 01:42:15,339 INFO L902 garLoopResultBuilder]: At program point L5762(line 5762) the Hoare annotation is: true [2022-11-03 01:42:15,339 INFO L902 garLoopResultBuilder]: At program point L5764(line 5764) the Hoare annotation is: true [2022-11-03 01:42:15,339 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 5720 5722) the Hoare annotation is: true [2022-11-03 01:42:15,339 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5720 5722) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L902 garLoopResultBuilder]: At program point ldv_undef_intENTRY(lines 5776 5783) the Hoare annotation is: true [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point ldv_undef_intEXIT(lines 5776 5783) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L902 garLoopResultBuilder]: At program point ldv_errorENTRY(lines 6329 6335) the Hoare annotation is: true [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6333) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point ldv_errorEXIT(lines 6329 6335) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point ldv_stopEXIT(lines 5792 5798) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L902 garLoopResultBuilder]: At program point ldv_stopENTRY(lines 5792 5798) the Hoare annotation is: true [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point L6047(lines 6047 6062) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point L6080-2(lines 6067 6122) no Hoare annotation was computed. [2022-11-03 01:42:15,340 INFO L899 garLoopResultBuilder]: For program point L6080(lines 6080 6085) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L899 garLoopResultBuilder]: For program point L6213(line 6213) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L895 garLoopResultBuilder]: At program point L6081(line 6081) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,341 INFO L899 garLoopResultBuilder]: For program point L6081-1(line 6081) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L899 garLoopResultBuilder]: For program point L6973(lines 6964 6982) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L902 garLoopResultBuilder]: At program point L6214(line 6214) the Hoare annotation is: true [2022-11-03 01:42:15,341 INFO L895 garLoopResultBuilder]: At program point L6974(line 6974) the Hoare annotation is: false [2022-11-03 01:42:15,341 INFO L899 garLoopResultBuilder]: For program point L6049(lines 6049 6059) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L899 garLoopResultBuilder]: For program point L6050(line 6050) no Hoare annotation was computed. [2022-11-03 01:42:15,341 INFO L895 garLoopResultBuilder]: At program point L5852(lines 5852 5855) the Hoare annotation is: (let ((.cse0 (= 1 ~ldv_mutex_mutex_of_device~0)) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 1)) (.cse2 (= ~ldv_mutex_lock~0 1))) (or (and .cse0 (= |ULTIMATE.start_m5632_recover_~r~0#1| 0) .cse1 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) .cse2 (= 2 ~ldv_mutex_udev~0)) (and .cse0 .cse1 .cse2 (<= (+ |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 1) 0) (<= (+ |ULTIMATE.start_m5632_recover_~r~0#1| 1) 0) (= ~ldv_mutex_udev~0 1)))) [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6051(lines 6051 6055) no Hoare annotation was computed. [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6184(line 6184) no Hoare annotation was computed. [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6052-1(line 6052) no Hoare annotation was computed. [2022-11-03 01:42:15,342 INFO L895 garLoopResultBuilder]: At program point L6052(line 6052) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,342 INFO L902 garLoopResultBuilder]: At program point L6977(lines 6962 6983) the Hoare annotation is: true [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6185(lines 6185 6200) no Hoare annotation was computed. [2022-11-03 01:42:15,342 INFO L895 garLoopResultBuilder]: At program point L6978(line 6978) the Hoare annotation is: false [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6945-1(line 6945) no Hoare annotation was computed. [2022-11-03 01:42:15,342 INFO L895 garLoopResultBuilder]: At program point L6945(line 6945) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,342 INFO L895 garLoopResultBuilder]: At program point L6087(line 6087) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,342 INFO L899 garLoopResultBuilder]: For program point L6087-1(line 6087) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L895 garLoopResultBuilder]: At program point L6153(lines 6002 6228) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6120(line 6120) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6946(lines 6946 6952) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6187(lines 6187 6197) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6220(line 6220) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L902 garLoopResultBuilder]: At program point L6121(line 6121) the Hoare annotation is: true [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6947-1(line 6947) no Hoare annotation was computed. [2022-11-03 01:42:15,343 INFO L895 garLoopResultBuilder]: At program point L6947(line 6947) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,343 INFO L902 garLoopResultBuilder]: At program point L6221(line 6221) the Hoare annotation is: true [2022-11-03 01:42:15,343 INFO L899 garLoopResultBuilder]: For program point L6188(line 6188) no Hoare annotation was computed. [2022-11-03 01:42:15,344 INFO L895 garLoopResultBuilder]: At program point L5858(lines 5843 5860) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,344 INFO L899 garLoopResultBuilder]: For program point L6189(lines 6189 6193) no Hoare annotation was computed. [2022-11-03 01:42:15,344 INFO L899 garLoopResultBuilder]: For program point L6057(line 6057) no Hoare annotation was computed. [2022-11-03 01:42:15,344 INFO L895 garLoopResultBuilder]: At program point L6223(lines 6002 6228) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,344 INFO L895 garLoopResultBuilder]: At program point L6190(line 6190) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,344 INFO L902 garLoopResultBuilder]: At program point L6058(line 6058) the Hoare annotation is: true [2022-11-03 01:42:15,344 INFO L899 garLoopResultBuilder]: For program point L6190-1(line 6190) no Hoare annotation was computed. [2022-11-03 01:42:15,344 INFO L895 garLoopResultBuilder]: At program point L6950(line 6950) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,344 INFO L895 garLoopResultBuilder]: At program point L6917-1(lines 6917 6920) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= |ULTIMATE.start_m5632_recover_~r~0#1| 0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) (= ~ldv_mutex_lock~0 1) (= 2 ~ldv_mutex_udev~0)) [2022-11-03 01:42:15,348 INFO L899 garLoopResultBuilder]: For program point L6950-1(line 6950) no Hoare annotation was computed. [2022-11-03 01:42:15,348 INFO L899 garLoopResultBuilder]: For program point L6917(lines 6917 6920) no Hoare annotation was computed. [2022-11-03 01:42:15,348 INFO L895 garLoopResultBuilder]: At program point L6918(line 6918) the Hoare annotation is: false [2022-11-03 01:42:15,349 INFO L895 garLoopResultBuilder]: At program point L6951(lines 6940 6954) the Hoare annotation is: (let ((.cse0 (= 1 ~ldv_mutex_mutex_of_device~0)) (.cse1 (= ~ldv_mutex_i_mutex_of_inode~0 1)) (.cse2 (= ~ldv_mutex_lock~0 1))) (or (and .cse0 .cse1 (= |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 0) .cse2 (= 2 ~ldv_mutex_udev~0)) (and .cse0 .cse1 .cse2 (<= (+ |ULTIMATE.start_ldv_usb_lock_device_for_reset_udev_#res#1| 1) 0) (= ~ldv_mutex_udev~0 1)))) [2022-11-03 01:42:15,349 INFO L899 garLoopResultBuilder]: For program point L6159(line 6159) no Hoare annotation was computed. [2022-11-03 01:42:15,349 INFO L899 garLoopResultBuilder]: For program point L6027(lines 6027 6222) no Hoare annotation was computed. [2022-11-03 01:42:15,349 INFO L895 garLoopResultBuilder]: At program point L6093(line 6093) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,349 INFO L899 garLoopResultBuilder]: For program point L6127(line 6127) no Hoare annotation was computed. [2022-11-03 01:42:15,350 INFO L902 garLoopResultBuilder]: At program point L6160(line 6160) the Hoare annotation is: true [2022-11-03 01:42:15,350 INFO L899 garLoopResultBuilder]: For program point L6028(line 6028) no Hoare annotation was computed. [2022-11-03 01:42:15,350 INFO L899 garLoopResultBuilder]: For program point L6128(lines 6128 6164) no Hoare annotation was computed. [2022-11-03 01:42:15,350 INFO L899 garLoopResultBuilder]: For program point L6029(lines 6029 6044) no Hoare annotation was computed. [2022-11-03 01:42:15,351 INFO L899 garLoopResultBuilder]: For program point L6195(line 6195) no Hoare annotation was computed. [2022-11-03 01:42:15,351 INFO L899 garLoopResultBuilder]: For program point L6130(lines 6130 6161) no Hoare annotation was computed. [2022-11-03 01:42:15,351 INFO L902 garLoopResultBuilder]: At program point L6196(line 6196) the Hoare annotation is: true [2022-11-03 01:42:15,352 INFO L899 garLoopResultBuilder]: For program point L6031(lines 6031 6041) no Hoare annotation was computed. [2022-11-03 01:42:15,353 INFO L899 garLoopResultBuilder]: For program point L6064(line 6064) no Hoare annotation was computed. [2022-11-03 01:42:15,353 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 01:42:15,353 INFO L899 garLoopResultBuilder]: For program point L6131(line 6131) no Hoare annotation was computed. [2022-11-03 01:42:15,353 INFO L899 garLoopResultBuilder]: For program point L6065(lines 6065 6125) no Hoare annotation was computed. [2022-11-03 01:42:15,353 INFO L899 garLoopResultBuilder]: For program point L6032(line 6032) no Hoare annotation was computed. [2022-11-03 01:42:15,354 INFO L895 garLoopResultBuilder]: At program point L6132(lines 6132 6137) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,354 INFO L899 garLoopResultBuilder]: For program point L6033(lines 6033 6037) no Hoare annotation was computed. [2022-11-03 01:42:15,354 INFO L899 garLoopResultBuilder]: For program point L6166(line 6166) no Hoare annotation was computed. [2022-11-03 01:42:15,354 INFO L899 garLoopResultBuilder]: For program point L6067(lines 6067 6122) no Hoare annotation was computed. [2022-11-03 01:42:15,355 INFO L895 garLoopResultBuilder]: At program point L6100(line 6100) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,355 INFO L899 garLoopResultBuilder]: For program point L6167(lines 6167 6182) no Hoare annotation was computed. [2022-11-03 01:42:15,355 INFO L895 garLoopResultBuilder]: At program point L6068(line 6068) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,356 INFO L895 garLoopResultBuilder]: At program point L6003(line 6003) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,356 INFO L899 garLoopResultBuilder]: For program point L6003-1(line 6003) no Hoare annotation was computed. [2022-11-03 01:42:15,356 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:42:15,356 INFO L899 garLoopResultBuilder]: For program point L6202(line 6202) no Hoare annotation was computed. [2022-11-03 01:42:15,356 INFO L899 garLoopResultBuilder]: For program point L6169(lines 6169 6179) no Hoare annotation was computed. [2022-11-03 01:42:15,356 INFO L899 garLoopResultBuilder]: For program point L6203(lines 6203 6218) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6170(line 6170) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L895 garLoopResultBuilder]: At program point L6005(line 6005) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6005-1(line 6005) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6171(lines 6171 6175) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6039(line 6039) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6139(line 6139) no Hoare annotation was computed. [2022-11-03 01:42:15,357 INFO L899 garLoopResultBuilder]: For program point L6172-1(line 6172) no Hoare annotation was computed. [2022-11-03 01:42:15,358 INFO L899 garLoopResultBuilder]: For program point L6205(lines 6205 6215) no Hoare annotation was computed. [2022-11-03 01:42:15,358 INFO L895 garLoopResultBuilder]: At program point L6172(line 6172) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,358 INFO L895 garLoopResultBuilder]: At program point L6007(line 6007) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,358 INFO L899 garLoopResultBuilder]: For program point L6007-1(line 6007) no Hoare annotation was computed. [2022-11-03 01:42:15,358 INFO L895 garLoopResultBuilder]: At program point L5974(line 5974) the Hoare annotation is: (and (= ~ldv_state_variable_0~0 1) (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,359 INFO L902 garLoopResultBuilder]: At program point L6040(line 6040) the Hoare annotation is: true [2022-11-03 01:42:15,359 INFO L895 garLoopResultBuilder]: At program point L5974-1(line 5974) the Hoare annotation is: (and (= ~ldv_state_variable_0~0 1) (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,359 INFO L899 garLoopResultBuilder]: For program point L6965-1(lines 6964 6982) no Hoare annotation was computed. [2022-11-03 01:42:15,359 INFO L899 garLoopResultBuilder]: For program point L6965(lines 6965 6968) no Hoare annotation was computed. [2022-11-03 01:42:15,359 INFO L899 garLoopResultBuilder]: For program point L6206(line 6206) no Hoare annotation was computed. [2022-11-03 01:42:15,359 INFO L895 garLoopResultBuilder]: At program point L6140(lines 6140 6157) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,360 INFO L895 garLoopResultBuilder]: At program point L6966(line 6966) the Hoare annotation is: false [2022-11-03 01:42:15,360 INFO L899 garLoopResultBuilder]: For program point L6207(lines 6207 6211) no Hoare annotation was computed. [2022-11-03 01:42:15,360 INFO L895 garLoopResultBuilder]: At program point L6009(line 6009) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,360 INFO L899 garLoopResultBuilder]: For program point L6009-1(line 6009) no Hoare annotation was computed. [2022-11-03 01:42:15,360 INFO L899 garLoopResultBuilder]: For program point L6208-1(line 6208) no Hoare annotation was computed. [2022-11-03 01:42:15,360 INFO L895 garLoopResultBuilder]: At program point L6208(line 6208) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,361 INFO L899 garLoopResultBuilder]: For program point L6142-2(lines 6140 6156) no Hoare annotation was computed. [2022-11-03 01:42:15,361 INFO L895 garLoopResultBuilder]: At program point L6110(line 6110) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,361 INFO L895 garLoopResultBuilder]: At program point L6011(line 6011) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,361 INFO L895 garLoopResultBuilder]: At program point L-1-2(line -1) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,361 INFO L899 garLoopResultBuilder]: For program point L6011-1(line 6011) no Hoare annotation was computed. [2022-11-03 01:42:15,361 INFO L899 garLoopResultBuilder]: For program point L6969(lines 6964 6982) no Hoare annotation was computed. [2022-11-03 01:42:15,362 INFO L899 garLoopResultBuilder]: For program point L6177(line 6177) no Hoare annotation was computed. [2022-11-03 01:42:15,362 INFO L895 garLoopResultBuilder]: At program point L6970(line 6970) the Hoare annotation is: false [2022-11-03 01:42:15,362 INFO L902 garLoopResultBuilder]: At program point L6178(line 6178) the Hoare annotation is: true [2022-11-03 01:42:15,362 INFO L899 garLoopResultBuilder]: For program point L6079(line 6079) no Hoare annotation was computed. [2022-11-03 01:42:15,362 INFO L899 garLoopResultBuilder]: For program point L6046(line 6046) no Hoare annotation was computed. [2022-11-03 01:42:15,362 INFO L895 garLoopResultBuilder]: At program point L6013(line 6013) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,363 INFO L895 garLoopResultBuilder]: At program point L6013-1(line 6013) the Hoare annotation is: (and (= 1 ~ldv_mutex_mutex_of_device~0) (= ~ldv_mutex_i_mutex_of_inode~0 1) (= ~ldv_mutex_lock~0 1) (= ~ldv_state_variable_6~0 0) (= ~ldv_mutex_udev~0 1)) [2022-11-03 01:42:15,363 INFO L902 garLoopResultBuilder]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: true [2022-11-03 01:42:15,363 INFO L899 garLoopResultBuilder]: For program point #Ultimate.meminitEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:42:15,363 INFO L902 garLoopResultBuilder]: At program point always_connectedENTRY(lines 5837 5842) the Hoare annotation is: true [2022-11-03 01:42:15,363 INFO L899 garLoopResultBuilder]: For program point always_connectedEXIT(lines 5837 5842) no Hoare annotation was computed. [2022-11-03 01:42:15,364 INFO L902 garLoopResultBuilder]: At program point ldv_undef_int_negativeENTRY(lines 6336 6349) the Hoare annotation is: true [2022-11-03 01:42:15,364 INFO L899 garLoopResultBuilder]: For program point L6343-1(lines 6343 6346) no Hoare annotation was computed. [2022-11-03 01:42:15,365 INFO L899 garLoopResultBuilder]: For program point L6343(lines 6343 6346) no Hoare annotation was computed. [2022-11-03 01:42:15,365 INFO L902 garLoopResultBuilder]: At program point L6344(line 6344) the Hoare annotation is: true [2022-11-03 01:42:15,365 INFO L899 garLoopResultBuilder]: For program point L6341-1(line 6341) no Hoare annotation was computed. [2022-11-03 01:42:15,365 INFO L899 garLoopResultBuilder]: For program point ldv_undef_int_negativeEXIT(lines 6336 6349) no Hoare annotation was computed. [2022-11-03 01:42:15,365 INFO L902 garLoopResultBuilder]: At program point L6341(line 6341) the Hoare annotation is: true [2022-11-03 01:42:15,369 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:42:15,371 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:42:15,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:42:15 BoogieIcfgContainer [2022-11-03 01:42:15,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:42:15,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:42:15,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:42:15,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:42:15,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:42:06" (3/4) ... [2022-11-03 01:42:15,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:42:15,430 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure usbnet_disconnect [2022-11-03 01:42:15,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_error [2022-11-03 01:42:15,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_mutex_lock_udev [2022-11-03 01:42:15,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_stop [2022-11-03 01:42:15,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_init_zalloc [2022-11-03 01:42:15,431 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-03 01:42:15,432 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int [2022-11-03 01:42:15,432 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure #Ultimate.meminit [2022-11-03 01:42:15,432 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure always_connected [2022-11-03 01:42:15,432 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_undef_int_negative [2022-11-03 01:42:15,457 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 85 nodes and edges [2022-11-03 01:42:15,459 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-03 01:42:15,461 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 01:42:15,462 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:42:15,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:42:15,505 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev [2022-11-03 01:42:15,506 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && ldv_mutex_udev == 1) [2022-11-03 01:42:15,507 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || (((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && r + 1 <= 0) && ldv_mutex_udev == 1) [2022-11-03 01:42:15,726 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:42:15,726 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:42:15,727 INFO L158 Benchmark]: Toolchain (without parser) took 12623.14ms. Allocated memory was 104.9MB in the beginning and 329.3MB in the end (delta: 224.4MB). Free memory was 67.9MB in the beginning and 177.0MB in the end (delta: -109.1MB). Peak memory consumption was 111.4MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,727 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:42:15,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1644.17ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 67.6MB in the beginning and 87.9MB in the end (delta: -20.3MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,728 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.77ms. Allocated memory is still 138.4MB. Free memory was 87.9MB in the beginning and 80.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,728 INFO L158 Benchmark]: Boogie Preprocessor took 140.76ms. Allocated memory is still 138.4MB. Free memory was 80.1MB in the beginning and 70.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,729 INFO L158 Benchmark]: RCFGBuilder took 1819.03ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 70.5MB in the beginning and 112.7MB in the end (delta: -42.1MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,729 INFO L158 Benchmark]: TraceAbstraction took 8561.11ms. Allocated memory was 205.5MB in the beginning and 329.3MB in the end (delta: 123.7MB). Free memory was 111.6MB in the beginning and 208.4MB in the end (delta: -96.8MB). Peak memory consumption was 163.0MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,729 INFO L158 Benchmark]: Witness Printer took 305.54ms. Allocated memory is still 329.3MB. Free memory was 208.4MB in the beginning and 177.0MB in the end (delta: 31.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-03 01:42:15,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 57.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1644.17ms. Allocated memory was 104.9MB in the beginning and 138.4MB in the end (delta: 33.6MB). Free memory was 67.6MB in the beginning and 87.9MB in the end (delta: -20.3MB). Peak memory consumption was 53.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 144.77ms. Allocated memory is still 138.4MB. Free memory was 87.9MB in the beginning and 80.1MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 140.76ms. Allocated memory is still 138.4MB. Free memory was 80.1MB in the beginning and 70.5MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 1819.03ms. Allocated memory was 138.4MB in the beginning and 205.5MB in the end (delta: 67.1MB). Free memory was 70.5MB in the beginning and 112.7MB in the end (delta: -42.1MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8561.11ms. Allocated memory was 205.5MB in the beginning and 329.3MB in the end (delta: 123.7MB). Free memory was 111.6MB in the beginning and 208.4MB in the end (delta: -96.8MB). Peak memory consumption was 163.0MB. Max. memory is 16.1GB. * Witness Printer took 305.54ms. Allocated memory is still 329.3MB. Free memory was 208.4MB in the beginning and 177.0MB in the end (delta: 31.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 6333]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.4s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1460 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1453 mSDsluCounter, 4363 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2667 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 542 IncrementalHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 1938 mSDtfsCounter, 542 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=432occurred in iteration=6, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 294 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 60 LocationsWithAnnotation, 356 PreInvPairs, 453 NumberOfFragments, 555 HoareAnnotationTreeSize, 356 FomulaSimplifications, 128 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 60 FomulaSimplificationsInter, 3288 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 949 NumberOfCodeBlocks, 949 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 940 ConstructedInterpolants, 0 QuantifiedInterpolants, 1224 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 1793/1793 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5843]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6093]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 5974]: Loop Invariant Derived loop invariant: (((ldv_state_variable_0 == 1 && 1 == ldv_mutex_mutex_of_device) && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6917]: Loop Invariant Derived loop invariant: ((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev - InvariantResult [Line: 6068]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6962]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5852]: Loop Invariant Derived loop invariant: (((((1 == ldv_mutex_mutex_of_device && r == 0) && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || (((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && r + 1 <= 0) && ldv_mutex_udev == 1) - InvariantResult [Line: 6013]: Loop Invariant Derived loop invariant: (((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_state_variable_6 == 0) && ldv_mutex_udev == 1 - InvariantResult [Line: 6100]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6110]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: (((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_state_variable_6 == 0) && ldv_mutex_udev == 1 - InvariantResult [Line: 6002]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6140]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 5792]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6132]: Loop Invariant Derived loop invariant: ((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && ldv_mutex_udev == 1 - InvariantResult [Line: 6940]: Loop Invariant Derived loop invariant: ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && \result == 0) && ldv_mutex_lock == 1) && 2 == ldv_mutex_udev) || ((((1 == ldv_mutex_mutex_of_device && ldv_mutex_i_mutex_of_inode == 1) && ldv_mutex_lock == 1) && \result + 1 <= 0) && ldv_mutex_udev == 1) RESULT: Ultimate proved your program to be correct! [2022-11-03 01:42:15,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d3925e9-b780-448c-b6a9-ac3fb95a6f1f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE