./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta --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 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- 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-dbf71c6-m [2022-10-17 17:37:08,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:37:08,277 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:37:08,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:37:08,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:37:08,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:37:08,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:37:08,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:37:08,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:37:08,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:37:08,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:37:08,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:37:08,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:37:08,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:37:08,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:37:08,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:37:08,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:37:08,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:37:08,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:37:08,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:37:08,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:37:08,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:37:08,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:37:08,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:37:08,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:37:08,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:37:08,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:37:08,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:37:08,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:37:08,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:37:08,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:37:08,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:37:08,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:37:08,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:37:08,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:37:08,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:37:08,407 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:37:08,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:37:08,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:37:08,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:37:08,409 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:37:08,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-10-17 17:37:08,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:37:08,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:37:08,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:37:08,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:37:08,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:37:08,468 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:37:08,469 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:37:08,469 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:37:08,469 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:37:08,469 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:37:08,470 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:37:08,470 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:37:08,470 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:37:08,470 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:37:08,471 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:37:08,471 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:37:08,471 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:37:08,472 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:37:08,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:37:08,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:37:08,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:37:08,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:37:08,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:37:08,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:37:08,474 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:37:08,474 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:37:08,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:37:08,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:37:08,475 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:37:08,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:08,485 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:37:08,485 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:37:08,486 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:37:08,486 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:37:08,486 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:37:08,486 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:37:08,487 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:37:08,487 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:37:08,487 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_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2022-10-17 17:37:08,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:37:08,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:37:08,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:37:08,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:37:08,744 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:37:08,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2022-10-17 17:37:08,805 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/data/fcd6a9fa2/d9fd6cb481c34d68aa3f7b73c7b0b5c0/FLAGcd6dd6906 [2022-10-17 17:37:09,622 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:37:09,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2022-10-17 17:37:09,661 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/data/fcd6a9fa2/d9fd6cb481c34d68aa3f7b73c7b0b5c0/FLAGcd6dd6906 [2022-10-17 17:37:10,146 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/data/fcd6a9fa2/d9fd6cb481c34d68aa3f7b73c7b0b5c0 [2022-10-17 17:37:10,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:37:10,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:37:10,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:10,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:37:10,161 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:37:10,162 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:10" (1/1) ... [2022-10-17 17:37:10,163 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692b4134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:10, skipping insertion in model container [2022-10-17 17:37:10,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:37:10" (1/1) ... [2022-10-17 17:37:10,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:37:10,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:37:11,852 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_047bdd75-040c-4cf1-84c5-b26eebf57a24/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2022-10-17 17:37:11,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:12,015 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:37:12,404 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_047bdd75-040c-4cf1-84c5-b26eebf57a24/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2022-10-17 17:37:12,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:37:12,521 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:37:12,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12 WrapperNode [2022-10-17 17:37:12,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:37:12,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:12,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:37:12,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:37:12,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:12,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:12,825 INFO L138 Inliner]: procedures = 191, calls = 1268, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 3442 [2022-10-17 17:37:12,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:37:12,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:37:12,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:37:12,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:37:12,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:12,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:12,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:12,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:37:13,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:37:13,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:37:13,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:37:13,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (1/1) ... [2022-10-17 17:37:13,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:37:13,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:37:13,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:37:13,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_047bdd75-040c-4cf1-84c5-b26eebf57a24/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:37:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2022-10-17 17:37:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2022-10-17 17:37:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 17:37:13,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-10-17 17:37:13,277 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-10-17 17:37:13,278 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-10-17 17:37:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-17 17:37:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-17 17:37:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-17 17:37:13,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:37:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2022-10-17 17:37:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2022-10-17 17:37:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2022-10-17 17:37:13,279 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2022-10-17 17:37:13,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-10-17 17:37:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-10-17 17:37:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2022-10-17 17:37:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2022-10-17 17:37:13,280 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2022-10-17 17:37:13,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2022-10-17 17:37:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-10-17 17:37:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-10-17 17:37:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 17:37:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 17:37:13,281 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2022-10-17 17:37:13,281 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2022-10-17 17:37:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2022-10-17 17:37:13,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2022-10-17 17:37:13,282 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2022-10-17 17:37:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2022-10-17 17:37:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-10-17 17:37:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-10-17 17:37:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2022-10-17 17:37:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2022-10-17 17:37:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2022-10-17 17:37:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2022-10-17 17:37:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2022-10-17 17:37:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2022-10-17 17:37:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:37:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-10-17 17:37:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-10-17 17:37:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-10-17 17:37:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-10-17 17:37:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2022-10-17 17:37:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2022-10-17 17:37:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2022-10-17 17:37:13,286 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2022-10-17 17:37:13,287 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2022-10-17 17:37:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2022-10-17 17:37:13,289 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-10-17 17:37:13,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-10-17 17:37:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-10-17 17:37:13,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-10-17 17:37:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2022-10-17 17:37:13,290 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2022-10-17 17:37:13,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 17:37:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-10-17 17:37:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2022-10-17 17:37:13,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2022-10-17 17:37:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2022-10-17 17:37:13,291 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-10-17 17:37:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-10-17 17:37:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2022-10-17 17:37:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2022-10-17 17:37:13,292 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-10-17 17:37:13,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-10-17 17:37:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:37:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2022-10-17 17:37:13,293 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2022-10-17 17:37:13,293 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2022-10-17 17:37:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2022-10-17 17:37:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:37:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 17:37:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-10-17 17:37:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-10-17 17:37:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-10-17 17:37:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2022-10-17 17:37:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2022-10-17 17:37:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2022-10-17 17:37:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2022-10-17 17:37:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 17:37:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2022-10-17 17:37:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2022-10-17 17:37:13,298 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2022-10-17 17:37:13,298 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2022-10-17 17:37:13,299 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2022-10-17 17:37:13,299 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2022-10-17 17:37:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2022-10-17 17:37:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2022-10-17 17:37:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2022-10-17 17:37:13,300 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2022-10-17 17:37:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-10-17 17:37:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-10-17 17:37:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2022-10-17 17:37:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2022-10-17 17:37:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-10-17 17:37:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-10-17 17:37:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-10-17 17:37:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-10-17 17:37:13,303 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2022-10-17 17:37:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2022-10-17 17:37:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:37:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 17:37:13,304 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2022-10-17 17:37:13,304 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2022-10-17 17:37:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-10-17 17:37:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-10-17 17:37:13,305 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2022-10-17 17:37:13,305 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2022-10-17 17:37:13,306 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-10-17 17:37:13,307 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-10-17 17:37:13,310 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2022-10-17 17:37:13,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2022-10-17 17:37:13,311 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-10-17 17:37:13,311 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-10-17 17:37:13,312 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2022-10-17 17:37:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2022-10-17 17:37:13,314 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-10-17 17:37:13,314 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-10-17 17:37:13,315 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-10-17 17:37:13,321 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-10-17 17:37:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2022-10-17 17:37:13,322 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2022-10-17 17:37:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2022-10-17 17:37:13,322 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2022-10-17 17:37:13,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 17:37:13,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-10-17 17:37:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-10-17 17:37:13,323 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-10-17 17:37:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2022-10-17 17:37:13,323 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2022-10-17 17:37:13,323 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-10-17 17:37:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-10-17 17:37:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2022-10-17 17:37:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2022-10-17 17:37:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:37:13,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-10-17 17:37:13,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-10-17 17:37:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2022-10-17 17:37:13,325 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2022-10-17 17:37:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-17 17:37:13,325 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-10-17 17:37:13,325 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-10-17 17:37:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-10-17 17:37:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-10-17 17:37:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:37:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:37:13,326 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-10-17 17:37:13,326 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-10-17 17:37:14,066 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:37:14,071 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:37:33,261 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:37:34,921 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:37:34,922 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:37:34,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:34 BoogieIcfgContainer [2022-10-17 17:37:34,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:37:34,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:37:34,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:37:34,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:37:34,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:37:10" (1/3) ... [2022-10-17 17:37:34,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adcc183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:34, skipping insertion in model container [2022-10-17 17:37:34,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:37:12" (2/3) ... [2022-10-17 17:37:34,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adcc183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:37:34, skipping insertion in model container [2022-10-17 17:37:34,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:37:34" (3/3) ... [2022-10-17 17:37:34,938 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2022-10-17 17:37:34,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:37:34,962 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:37:35,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:37:35,076 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;@16c115e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:37:35,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:37:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 562 states have (on average 1.3701067615658362) internal successors, (770), 602 states have internal predecessors, (770), 317 states have call successors, (317), 65 states have call predecessors, (317), 65 states have return successors, (317), 314 states have call predecessors, (317), 317 states have call successors, (317) [2022-10-17 17:37:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:37:35,103 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:35,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:35,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash 972828178, now seen corresponding path program 1 times [2022-10-17 17:37:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:35,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089555141] [2022-10-17 17:37:35,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:35,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:36,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:36,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089555141] [2022-10-17 17:37:36,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089555141] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:36,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:36,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835717269] [2022-10-17 17:37:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:36,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:36,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:36,218 INFO L87 Difference]: Start difference. First operand has 946 states, 562 states have (on average 1.3701067615658362) internal successors, (770), 602 states have internal predecessors, (770), 317 states have call successors, (317), 65 states have call predecessors, (317), 65 states have return successors, (317), 314 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:37:38,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-17 17:37:40,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:37:40,119 INFO L93 Difference]: Finished difference Result 2712 states and 4083 transitions. [2022-10-17 17:37:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:37:40,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-10-17 17:37:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:37:40,189 INFO L225 Difference]: With dead ends: 2712 [2022-10-17 17:37:40,190 INFO L226 Difference]: Without dead ends: 1769 [2022-10-17 17:37:40,205 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 [2022-10-17 17:37:40,210 INFO L413 NwaCegarLoop]: 1836 mSDtfsCounter, 1336 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2958 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-10-17 17:37:40,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 2958 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 378 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-10-17 17:37:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-10-17 17:37:40,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1764. [2022-10-17 17:37:40,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1050 states have (on average 1.3561904761904762) internal successors, (1424), 1108 states have internal predecessors, (1424), 593 states have call successors, (593), 122 states have call predecessors, (593), 120 states have return successors, (584), 577 states have call predecessors, (584), 584 states have call successors, (584) [2022-10-17 17:37:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2601 transitions. [2022-10-17 17:37:40,529 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2601 transitions. Word has length 15 [2022-10-17 17:37:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:37:40,530 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2601 transitions. [2022-10-17 17:37:40,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 17:37:40,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2601 transitions. [2022-10-17 17:37:40,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 17:37:40,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:37:40,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:37:40,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:37:40,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:37:40,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:37:40,534 INFO L85 PathProgramCache]: Analyzing trace with hash 91865378, now seen corresponding path program 1 times [2022-10-17 17:37:40,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:37:40,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039639323] [2022-10-17 17:37:40,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:37:40,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:37:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:37:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:37:40,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:37:40,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039639323] [2022-10-17 17:37:40,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039639323] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:37:40,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:37:40,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 17:37:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166694001] [2022-10-17 17:37:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:37:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:37:40,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:37:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:37:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:37:40,965 INFO L87 Difference]: Start difference. First operand 1764 states and 2601 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2)