./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba --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 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 --- 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-b5237d8 [2022-11-22 01:41:23,188 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:41:23,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:41:23,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:41:23,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:41:23,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:41:23,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:41:23,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:41:23,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:41:23,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:41:23,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:41:23,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:41:23,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:41:23,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:41:23,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:41:23,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:41:23,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:41:23,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:41:23,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:41:23,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:41:23,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:41:23,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:41:23,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:41:23,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:41:23,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:41:23,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:41:23,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:41:23,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:41:23,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:41:23,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:41:23,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:41:23,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:41:23,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:41:23,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:41:23,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:41:23,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:41:23,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:41:23,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:41:23,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:41:23,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:41:23,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:41:23,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:41:23,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:41:23,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:41:23,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:41:23,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:41:23,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:41:23,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:41:23,308 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:41:23,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:41:23,309 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:41:23,310 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:41:23,310 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:41:23,310 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:41:23,310 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:41:23,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:41:23,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:41:23,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:41:23,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:41:23,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:41:23,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:41:23,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:41:23,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:41:23,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:41:23,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:41:23,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:41:23,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:23,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:41:23,313 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:41:23,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:41:23,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:41:23,314 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:41:23,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:41:23,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:41:23,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:41:23,314 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_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 [2022-11-22 01:41:23,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:41:23,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:41:23,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:41:23,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:41:23,621 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:41:23,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2022-11-22 01:41:26,706 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:41:27,367 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:41:27,367 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2022-11-22 01:41:27,410 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/data/cbcfe1840/d92779c6f7f64104b558fe01fe9ff5c3/FLAG97bd830fc [2022-11-22 01:41:27,429 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/data/cbcfe1840/d92779c6f7f64104b558fe01fe9ff5c3 [2022-11-22 01:41:27,434 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:41:27,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:41:27,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:27,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:41:27,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:41:27,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:27" (1/1) ... [2022-11-22 01:41:27,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ddf7f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:27, skipping insertion in model container [2022-11-22 01:41:27,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:41:27" (1/1) ... [2022-11-22 01:41:27,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:41:27,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:41:28,178 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2022-11-22 01:41:28,179 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2022-11-22 01:41:28,479 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2022-11-22 01:41:29,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:29,687 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:41:29,782 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2022-11-22 01:41:29,783 WARN L1259 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2022-11-22 01:41:29,795 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2022-11-22 01:41:30,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:41:30,330 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:41:30,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30 WrapperNode [2022-11-22 01:41:30,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:41:30,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:30,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:41:30,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:41:30,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,634 INFO L138 Inliner]: procedures = 245, calls = 3258, calls flagged for inlining = 96, calls inlined = 88, statements flattened = 4862 [2022-11-22 01:41:30,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:41:30,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:41:30,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:41:30,636 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:41:30,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:30,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:31,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:31,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:41:31,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:41:31,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:41:31,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:41:31,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (1/1) ... [2022-11-22 01:41:31,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:41:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:41:31,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:41:31,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:41:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_resume [2022-11-22 01:41:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_resume [2022-11-22 01:41:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_request [2022-11-22 01:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_request [2022-11-22 01:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_pullup [2022-11-22 01:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_pullup [2022-11-22 01:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_enable [2022-11-22 01:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_enable [2022-11-22 01:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_disable [2022-11-22 01:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_disable [2022-11-22 01:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:41:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2022-11-22 01:41:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2022-11-22 01:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-22 01:41:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-22 01:41:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:41:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:41:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2022-11-22 01:41:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2022-11-22 01:41:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure ep_open [2022-11-22 01:41:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_open [2022-11-22 01:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_disconnect [2022-11-22 01:41:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_disconnect [2022-11-22 01:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2022-11-22 01:41:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2022-11-22 01:41:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2022-11-22 01:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2022-11-22 01:41:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:41:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-22 01:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-22 01:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_write_fifo [2022-11-22 01:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_write_fifo [2022-11-22 01:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure __orr32 [2022-11-22 01:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure __orr32 [2022-11-22 01:41:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_read_frameno [2022-11-22 01:41:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_read_frameno [2022-11-22 01:41:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure our_ep [2022-11-22 01:41:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure our_ep [2022-11-22 01:41:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_dump [2022-11-22 01:41:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_dump [2022-11-22 01:41:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_core_init [2022-11-22 01:41:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_core_init [2022-11-22 01:41:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2022-11-22 01:41:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2022-11-22 01:41:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:41:31,145 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2022-11-22 01:41:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2022-11-22 01:41:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-22 01:41:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-22 01:41:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure to_hsotg [2022-11-22 01:41:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure to_hsotg [2022-11-22 01:41:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2022-11-22 01:41:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2022-11-22 01:41:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:41:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_enqueue_setup [2022-11-22 01:41:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_enqueue_setup [2022-11-22 01:41:31,147 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_start [2022-11-22 01:41:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_start [2022-11-22 01:41:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-22 01:41:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-22 01:41:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-22 01:41:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-22 01:41:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_probe [2022-11-22 01:41:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_probe [2022-11-22 01:41:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:41:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:41:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure our_req [2022-11-22 01:41:31,150 INFO L138 BoogieDeclarations]: Found implementation of procedure our_req [2022-11-22 01:41:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure ep_from_windex [2022-11-22 01:41:31,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_from_windex [2022-11-22 01:41:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_stop [2022-11-22 01:41:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_stop [2022-11-22 01:41:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-22 01:41:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-22 01:41:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_req_feature [2022-11-22 01:41:31,152 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_req_feature [2022-11-22 01:41:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_enable [2022-11-22 01:41:31,153 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_enable [2022-11-22 01:41:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_queue [2022-11-22 01:41:31,153 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_queue [2022-11-22 01:41:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure get_ep_head [2022-11-22 01:41:31,153 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ep_head [2022-11-22 01:41:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:41:31,154 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:41:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2022-11-22 01:41:31,154 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2022-11-22 01:41:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure fifo_open [2022-11-22 01:41:31,155 INFO L138 BoogieDeclarations]: Found implementation of procedure fifo_open [2022-11-22 01:41:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure phy_exit [2022-11-22 01:41:31,155 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_exit [2022-11-22 01:41:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2022-11-22 01:41:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2022-11-22 01:41:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_alloc_request [2022-11-22 01:41:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_alloc_request [2022-11-22 01:41:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_init_fifo [2022-11-22 01:41:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_init_fifo [2022-11-22 01:41:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:41:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:41:31,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:41:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_send_reply [2022-11-22 01:41:31,158 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_send_reply [2022-11-22 01:41:31,160 INFO L130 BoogieDeclarations]: Found specification of procedure phy_init [2022-11-22 01:41:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_init [2022-11-22 01:41:31,161 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_free_request [2022-11-22 01:41:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_free_request [2022-11-22 01:41:31,163 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 01:41:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-22 01:41:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure usb_phy_init [2022-11-22 01:41:31,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_phy_init [2022-11-22 01:41:31,164 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-22 01:41:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-22 01:41:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:41:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep0_mps [2022-11-22 01:41:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep0_mps [2022-11-22 01:41:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt_lock [2022-11-22 01:41:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt_lock [2022-11-22 01:41:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_setup [2022-11-22 01:41:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_setup [2022-11-22 01:41:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_control [2022-11-22 01:41:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_control [2022-11-22 01:41:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:41:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-22 01:41:31,171 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-22 01:41:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_txfifo_flush [2022-11-22 01:41:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_txfifo_flush [2022-11-22 01:41:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt [2022-11-22 01:41:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt [2022-11-22 01:41:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-22 01:41:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-22 01:41:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_disable [2022-11-22 01:41:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_disable [2022-11-22 01:41:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_corereset [2022-11-22 01:41:31,172 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_corereset [2022-11-22 01:41:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:41:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:41:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_gadget_getframe [2022-11-22 01:41:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_gadget_getframe [2022-11-22 01:41:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2022-11-22 01:41:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2022-11-22 01:41:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-22 01:41:31,173 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-22 01:41:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:41:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-22 01:41:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-22 01:41:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure state_open [2022-11-22 01:41:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure state_open [2022-11-22 01:41:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure __bic32 [2022-11-22 01:41:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure __bic32 [2022-11-22 01:41:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:41:31,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:41:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ctrl_epint [2022-11-22 01:41:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ctrl_epint [2022-11-22 01:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_en_gsint [2022-11-22 01:41:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_en_gsint [2022-11-22 01:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2022-11-22 01:41:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2022-11-22 01:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-22 01:41:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-22 01:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_set_ep_maxpacket [2022-11-22 01:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_set_ep_maxpacket [2022-11-22 01:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-22 01:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-22 01:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_enable [2022-11-22 01:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_enable [2022-11-22 01:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2022-11-22 01:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2022-11-22 01:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure kill_all_requests [2022-11-22 01:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_all_requests [2022-11-22 01:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_remove [2022-11-22 01:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_remove [2022-11-22 01:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2022-11-22 01:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2022-11-22 01:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-22 01:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-22 01:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure using_dma [2022-11-22 01:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure using_dma [2022-11-22 01:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-22 01:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_dequeue [2022-11-22 01:41:31,178 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_dequeue [2022-11-22 01:41:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2022-11-22 01:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2022-11-22 01:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_start_req [2022-11-22 01:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_start_req [2022-11-22 01:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-22 01:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-22 01:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-22 01:41:31,179 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-22 01:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:41:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2022-11-22 01:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_stall_ep0 [2022-11-22 01:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_stall_ep0 [2022-11-22 01:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:41:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-22 01:41:31,180 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-22 01:41:32,165 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:41:32,168 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:41:33,179 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:41:38,230 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:41:39,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:41:39,618 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:41:39,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:39 BoogieIcfgContainer [2022-11-22 01:41:39,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:41:39,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:41:39,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:41:39,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:41:39,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:41:27" (1/3) ... [2022-11-22 01:41:39,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d17b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:39, skipping insertion in model container [2022-11-22 01:41:39,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:41:30" (2/3) ... [2022-11-22 01:41:39,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d17b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:41:39, skipping insertion in model container [2022-11-22 01:41:39,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:41:39" (3/3) ... [2022-11-22 01:41:39,632 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2022-11-22 01:41:39,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:41:39,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:41:39,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:41:39,739 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;@bee8408, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:41:39,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:41:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 1474 states, 883 states have (on average 1.3001132502831256) internal successors, (1148), 922 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) [2022-11-22 01:41:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 01:41:39,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:39,766 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:39,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1131256693, now seen corresponding path program 1 times [2022-11-22 01:41:39,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:39,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068895056] [2022-11-22 01:41:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:40,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:40,662 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-22 01:41:40,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:40,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068895056] [2022-11-22 01:41:40,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068895056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:40,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:40,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:41:40,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890174939] [2022-11-22 01:41:40,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:40,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:40,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:40,715 INFO L87 Difference]: Start difference. First operand has 1474 states, 883 states have (on average 1.3001132502831256) internal successors, (1148), 922 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:41:42,802 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 [] [2022-11-22 01:41:45,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:41:46,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:46,681 INFO L93 Difference]: Finished difference Result 4326 states and 6342 transitions. [2022-11-22 01:41:46,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:41:46,684 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2022-11-22 01:41:46,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:46,716 INFO L225 Difference]: With dead ends: 4326 [2022-11-22 01:41:46,716 INFO L226 Difference]: Without dead ends: 2849 [2022-11-22 01:41:46,729 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 [2022-11-22 01:41:46,732 INFO L413 NwaCegarLoop]: 2384 mSDtfsCounter, 2015 mSDsluCounter, 1891 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:46,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 4275 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 436 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-11-22 01:41:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2849 states. [2022-11-22 01:41:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2849 to 2845. [2022-11-22 01:41:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 1708 states have (on average 1.2833723653395785) internal successors, (2192), 1765 states have internal predecessors, (2192), 947 states have call successors, (947), 190 states have call predecessors, (947), 189 states have return successors, (946), 939 states have call predecessors, (946), 946 states have call successors, (946) [2022-11-22 01:41:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4085 transitions. [2022-11-22 01:41:47,121 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4085 transitions. Word has length 74 [2022-11-22 01:41:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:47,122 INFO L495 AbstractCegarLoop]: Abstraction has 2845 states and 4085 transitions. [2022-11-22 01:41:47,122 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), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-22 01:41:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4085 transitions. [2022-11-22 01:41:47,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-22 01:41:47,145 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:47,145 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:41:47,146 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:47,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:47,147 INFO L85 PathProgramCache]: Analyzing trace with hash 48124701, now seen corresponding path program 1 times [2022-11-22 01:41:47,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:47,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442402558] [2022-11-22 01:41:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:47,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-11-22 01:41:47,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:47,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442402558] [2022-11-22 01:41:47,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442402558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:47,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:47,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:41:47,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903817671] [2022-11-22 01:41:47,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:47,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:47,878 INFO L87 Difference]: Start difference. First operand 2845 states and 4085 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:41:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:52,283 INFO L93 Difference]: Finished difference Result 8366 states and 11997 transitions. [2022-11-22 01:41:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:41:52,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 162 [2022-11-22 01:41:52,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:52,321 INFO L225 Difference]: With dead ends: 8366 [2022-11-22 01:41:52,321 INFO L226 Difference]: Without dead ends: 5545 [2022-11-22 01:41:52,336 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 [2022-11-22 01:41:52,337 INFO L413 NwaCegarLoop]: 2611 mSDtfsCounter, 1993 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 4456 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:52,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 4456 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 01:41:52,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5545 states. [2022-11-22 01:41:52,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5545 to 5542. [2022-11-22 01:41:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5542 states, 3327 states have (on average 1.2825368199579201) internal successors, (4267), 3440 states have internal predecessors, (4267), 1838 states have call successors, (1838), 377 states have call predecessors, (1838), 376 states have return successors, (1837), 1824 states have call predecessors, (1837), 1837 states have call successors, (1837) [2022-11-22 01:41:52,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 7942 transitions. [2022-11-22 01:41:52,730 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 7942 transitions. Word has length 162 [2022-11-22 01:41:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:52,733 INFO L495 AbstractCegarLoop]: Abstraction has 5542 states and 7942 transitions. [2022-11-22 01:41:52,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-22 01:41:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 7942 transitions. [2022-11-22 01:41:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-11-22 01:41:52,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:52,749 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:41:52,749 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:52,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:52,752 INFO L85 PathProgramCache]: Analyzing trace with hash -355219509, now seen corresponding path program 1 times [2022-11-22 01:41:52,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990120005] [2022-11-22 01:41:52,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:52,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2022-11-22 01:41:53,366 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:53,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990120005] [2022-11-22 01:41:53,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990120005] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:53,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:53,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:41:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768290909] [2022-11-22 01:41:53,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:53,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:53,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:53,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:53,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:53,371 INFO L87 Difference]: Start difference. First operand 5542 states and 7942 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-22 01:41:57,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:41:57,558 INFO L93 Difference]: Finished difference Result 8555 states and 12186 transitions. [2022-11-22 01:41:57,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:41:57,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2022-11-22 01:41:57,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:41:57,633 INFO L225 Difference]: With dead ends: 8555 [2022-11-22 01:41:57,633 INFO L226 Difference]: Without dead ends: 8552 [2022-11-22 01:41:57,644 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 [2022-11-22 01:41:57,650 INFO L413 NwaCegarLoop]: 2595 mSDtfsCounter, 1706 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:41:57,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 3899 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 01:41:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2022-11-22 01:41:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8444. [2022-11-22 01:41:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8444 states, 5007 states have (on average 1.2604353904533654) internal successors, (6311), 5188 states have internal predecessors, (6311), 2822 states have call successors, (2822), 615 states have call predecessors, (2822), 614 states have return successors, (2887), 2792 states have call predecessors, (2887), 2821 states have call successors, (2887) [2022-11-22 01:41:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 12020 transitions. [2022-11-22 01:41:58,281 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 12020 transitions. Word has length 151 [2022-11-22 01:41:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:41:58,284 INFO L495 AbstractCegarLoop]: Abstraction has 8444 states and 12020 transitions. [2022-11-22 01:41:58,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2022-11-22 01:41:58,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 12020 transitions. [2022-11-22 01:41:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-22 01:41:58,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:41:58,296 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:41:58,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:41:58,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:41:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:41:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 222208689, now seen corresponding path program 1 times [2022-11-22 01:41:58,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:41:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771474990] [2022-11-22 01:41:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:41:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:41:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:41:58,816 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2022-11-22 01:41:58,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:41:58,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771474990] [2022-11-22 01:41:58,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771474990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:41:58,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:41:58,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:41:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617228643] [2022-11-22 01:41:58,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:41:58,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:41:58,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:41:58,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:41:58,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:41:58,820 INFO L87 Difference]: Start difference. First operand 8444 states and 12020 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:42:00,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:03,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:04,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:05,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:05,736 INFO L93 Difference]: Finished difference Result 23268 states and 33131 transitions. [2022-11-22 01:42:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:42:05,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2022-11-22 01:42:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:05,840 INFO L225 Difference]: With dead ends: 23268 [2022-11-22 01:42:05,840 INFO L226 Difference]: Without dead ends: 14856 [2022-11-22 01:42:05,876 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 [2022-11-22 01:42:05,879 INFO L413 NwaCegarLoop]: 2397 mSDtfsCounter, 2022 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2022 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:05,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2022 Valid, 4241 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 01:42:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2022-11-22 01:42:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14853. [2022-11-22 01:42:06,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14853 states, 8825 states have (on average 1.2626628895184135) internal successors, (11143), 9144 states have internal predecessors, (11143), 4946 states have call successors, (4946), 1085 states have call predecessors, (4946), 1081 states have return successors, (5061), 4890 states have call predecessors, (5061), 4945 states have call successors, (5061) [2022-11-22 01:42:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14853 states to 14853 states and 21150 transitions. [2022-11-22 01:42:06,779 INFO L78 Accepts]: Start accepts. Automaton has 14853 states and 21150 transitions. Word has length 172 [2022-11-22 01:42:06,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:06,780 INFO L495 AbstractCegarLoop]: Abstraction has 14853 states and 21150 transitions. [2022-11-22 01:42:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:42:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 14853 states and 21150 transitions. [2022-11-22 01:42:06,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-22 01:42:06,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:06,792 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:42:06,792 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:42:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:06,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1133288700, now seen corresponding path program 1 times [2022-11-22 01:42:06,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:06,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950331181] [2022-11-22 01:42:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-11-22 01:42:07,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:07,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950331181] [2022-11-22 01:42:07,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950331181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:07,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:07,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:42:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394980473] [2022-11-22 01:42:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:42:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:42:07,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:42:07,164 INFO L87 Difference]: Start difference. First operand 14853 states and 21150 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:42:09,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:12,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:13,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:13,105 INFO L93 Difference]: Finished difference Result 29675 states and 42256 transitions. [2022-11-22 01:42:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:42:13,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 179 [2022-11-22 01:42:13,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:13,189 INFO L225 Difference]: With dead ends: 29675 [2022-11-22 01:42:13,189 INFO L226 Difference]: Without dead ends: 14850 [2022-11-22 01:42:13,249 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 [2022-11-22 01:42:13,250 INFO L413 NwaCegarLoop]: 1890 mSDtfsCounter, 0 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3777 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:13,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3777 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 408 Invalid, 1 Unknown, 0 Unchecked, 5.4s Time] [2022-11-22 01:42:13,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14850 states. [2022-11-22 01:42:14,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14850 to 14846. [2022-11-22 01:42:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14846 states, 8818 states have (on average 1.2624177818099342) internal successors, (11132), 9139 states have internal predecessors, (11132), 4946 states have call successors, (4946), 1085 states have call predecessors, (4946), 1081 states have return successors, (5061), 4888 states have call predecessors, (5061), 4945 states have call successors, (5061) [2022-11-22 01:42:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14846 states to 14846 states and 21139 transitions. [2022-11-22 01:42:14,359 INFO L78 Accepts]: Start accepts. Automaton has 14846 states and 21139 transitions. Word has length 179 [2022-11-22 01:42:14,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:14,360 INFO L495 AbstractCegarLoop]: Abstraction has 14846 states and 21139 transitions. [2022-11-22 01:42:14,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-22 01:42:14,361 INFO L276 IsEmpty]: Start isEmpty. Operand 14846 states and 21139 transitions. [2022-11-22 01:42:14,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-22 01:42:14,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:14,388 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:14,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:42:14,389 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:42:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash 137072206, now seen corresponding path program 1 times [2022-11-22 01:42:14,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:14,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237754809] [2022-11-22 01:42:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2022-11-22 01:42:16,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:16,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237754809] [2022-11-22 01:42:16,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237754809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:16,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:42:16,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:42:16,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128361336] [2022-11-22 01:42:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:16,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:42:16,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:16,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:42:16,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:42:16,821 INFO L87 Difference]: Start difference. First operand 14846 states and 21139 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 01:42:18,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:19,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:21,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:23,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:27,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:30,681 INFO L93 Difference]: Finished difference Result 26325 states and 37591 transitions. [2022-11-22 01:42:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:42:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 235 [2022-11-22 01:42:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:30,750 INFO L225 Difference]: With dead ends: 26325 [2022-11-22 01:42:30,751 INFO L226 Difference]: Without dead ends: 11511 [2022-11-22 01:42:30,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:42:30,810 INFO L413 NwaCegarLoop]: 1578 mSDtfsCounter, 7 mSDsluCounter, 5942 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7520 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:30,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7520 Invalid, 1283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1280 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-22 01:42:30,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2022-11-22 01:42:31,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11511. [2022-11-22 01:42:31,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11511 states, 6847 states have (on average 1.259821819775084) internal successors, (8626), 7091 states have internal predecessors, (8626), 3770 states have call successors, (3770), 906 states have call predecessors, (3770), 893 states have return successors, (3849), 3719 states have call predecessors, (3849), 3769 states have call successors, (3849) [2022-11-22 01:42:31,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11511 states to 11511 states and 16245 transitions. [2022-11-22 01:42:31,662 INFO L78 Accepts]: Start accepts. Automaton has 11511 states and 16245 transitions. Word has length 235 [2022-11-22 01:42:31,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:31,663 INFO L495 AbstractCegarLoop]: Abstraction has 11511 states and 16245 transitions. [2022-11-22 01:42:31,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2022-11-22 01:42:31,663 INFO L276 IsEmpty]: Start isEmpty. Operand 11511 states and 16245 transitions. [2022-11-22 01:42:31,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-11-22 01:42:31,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:31,725 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 8, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:31,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:42:31,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:42:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1395243333, now seen corresponding path program 1 times [2022-11-22 01:42:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511819576] [2022-11-22 01:42:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:31,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2022-11-22 01:42:33,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:33,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511819576] [2022-11-22 01:42:33,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511819576] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:42:33,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38216230] [2022-11-22 01:42:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:42:33,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:42:33,454 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:42:33,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:42:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:35,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 6168 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:42:35,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:42:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 849 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-11-22 01:42:35,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:42:35,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38216230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:35,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:42:35,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-22 01:42:35,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887218110] [2022-11-22 01:42:35,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:35,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:42:35,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:42:35,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:42:35,639 INFO L87 Difference]: Start difference. First operand 11511 states and 16245 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 01:42:36,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:39,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:40,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:42:40,878 INFO L93 Difference]: Finished difference Result 29871 states and 42094 transitions. [2022-11-22 01:42:40,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:42:40,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) Word has length 372 [2022-11-22 01:42:40,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:42:40,979 INFO L225 Difference]: With dead ends: 29871 [2022-11-22 01:42:40,980 INFO L226 Difference]: Without dead ends: 18398 [2022-11-22 01:42:41,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 374 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:42:41,027 INFO L413 NwaCegarLoop]: 2082 mSDtfsCounter, 1656 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 3581 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:42:41,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1657 Valid, 3581 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 382 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 01:42:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18398 states. [2022-11-22 01:42:41,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18398 to 18389. [2022-11-22 01:42:41,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18389 states, 10923 states have (on average 1.2549665842717201) internal successors, (13708), 11305 states have internal predecessors, (13708), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1447 states have return successors, (6149), 5951 states have call predecessors, (6149), 6017 states have call successors, (6149) [2022-11-22 01:42:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18389 states to 18389 states and 25875 transitions. [2022-11-22 01:42:42,182 INFO L78 Accepts]: Start accepts. Automaton has 18389 states and 25875 transitions. Word has length 372 [2022-11-22 01:42:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:42:42,184 INFO L495 AbstractCegarLoop]: Abstraction has 18389 states and 25875 transitions. [2022-11-22 01:42:42,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (68), 3 states have call predecessors, (68), 3 states have return successors, (61), 3 states have call predecessors, (61), 3 states have call successors, (61) [2022-11-22 01:42:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 18389 states and 25875 transitions. [2022-11-22 01:42:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2022-11-22 01:42:42,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:42:42,304 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:42:42,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:42:42,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:42:42,522 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:42:42,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:42:42,522 INFO L85 PathProgramCache]: Analyzing trace with hash -180052392, now seen corresponding path program 1 times [2022-11-22 01:42:42,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:42:42,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997183187] [2022-11-22 01:42:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:42,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:42:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-11-22 01:42:45,677 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:42:45,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997183187] [2022-11-22 01:42:45,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997183187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:42:45,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967200092] [2022-11-22 01:42:45,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:42:45,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:42:45,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:42:45,680 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:42:45,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:42:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:42:47,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 6232 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-22 01:42:47,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:42:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2022-11-22 01:42:47,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:42:47,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967200092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:42:47,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:42:47,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2022-11-22 01:42:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305965237] [2022-11-22 01:42:47,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:42:47,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:42:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:42:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:42:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:42:47,932 INFO L87 Difference]: Start difference. First operand 18389 states and 25875 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-22 01:42:49,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:51,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:53,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:55,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:58,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:42:59,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:02,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:03,890 INFO L93 Difference]: Finished difference Result 36836 states and 52262 transitions. [2022-11-22 01:43:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:43:03,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) Word has length 376 [2022-11-22 01:43:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:04,000 INFO L225 Difference]: With dead ends: 36836 [2022-11-22 01:43:04,001 INFO L226 Difference]: Without dead ends: 18485 [2022-11-22 01:43:04,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:43:04,209 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 2 mSDsluCounter, 4714 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6298 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:04,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6298 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 757 Invalid, 4 Unknown, 0 Unchecked, 15.3s Time] [2022-11-22 01:43:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18485 states. [2022-11-22 01:43:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18485 to 18453. [2022-11-22 01:43:05,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18453 states, 10969 states have (on average 1.2538973470690127) internal successors, (13754), 11355 states have internal predecessors, (13754), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1465 states have return successors, (6283), 5965 states have call predecessors, (6283), 6017 states have call successors, (6283) [2022-11-22 01:43:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18453 states to 18453 states and 26055 transitions. [2022-11-22 01:43:05,410 INFO L78 Accepts]: Start accepts. Automaton has 18453 states and 26055 transitions. Word has length 376 [2022-11-22 01:43:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:05,412 INFO L495 AbstractCegarLoop]: Abstraction has 18453 states and 26055 transitions. [2022-11-22 01:43:05,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (70), 2 states have call predecessors, (70), 3 states have return successors, (63), 3 states have call predecessors, (63), 2 states have call successors, (63) [2022-11-22 01:43:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 18453 states and 26055 transitions. [2022-11-22 01:43:05,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2022-11-22 01:43:05,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:05,492 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:05,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:05,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-22 01:43:05,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:05,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:05,715 INFO L85 PathProgramCache]: Analyzing trace with hash 293869275, now seen corresponding path program 1 times [2022-11-22 01:43:05,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:05,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074157231] [2022-11-22 01:43:05,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:06,954 INFO L134 CoverageAnalysis]: Checked inductivity of 898 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-22 01:43:06,954 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:06,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074157231] [2022-11-22 01:43:06,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074157231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:06,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:43:06,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:43:06,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932723341] [2022-11-22 01:43:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:43:06,958 INFO L87 Difference]: Start difference. First operand 18453 states and 26055 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-22 01:43:09,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:10,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:12,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:13,800 INFO L93 Difference]: Finished difference Result 36882 states and 52412 transitions. [2022-11-22 01:43:13,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:13,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 390 [2022-11-22 01:43:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:13,910 INFO L225 Difference]: With dead ends: 36882 [2022-11-22 01:43:13,910 INFO L226 Difference]: Without dead ends: 18467 [2022-11-22 01:43:13,983 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 [2022-11-22 01:43:13,984 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 0 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:13,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3168 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 358 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2022-11-22 01:43:14,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18467 states. [2022-11-22 01:43:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18467 to 18467. [2022-11-22 01:43:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18467 states, 10983 states have (on average 1.2535737048165347) internal successors, (13768), 11369 states have internal predecessors, (13768), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1465 states have return successors, (6283), 5965 states have call predecessors, (6283), 6017 states have call successors, (6283) [2022-11-22 01:43:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18467 states to 18467 states and 26069 transitions. [2022-11-22 01:43:15,055 INFO L78 Accepts]: Start accepts. Automaton has 18467 states and 26069 transitions. Word has length 390 [2022-11-22 01:43:15,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:15,056 INFO L495 AbstractCegarLoop]: Abstraction has 18467 states and 26069 transitions. [2022-11-22 01:43:15,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 2 states have call successors, (72), 2 states have call predecessors, (72), 1 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-22 01:43:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 18467 states and 26069 transitions. [2022-11-22 01:43:15,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-11-22 01:43:15,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:15,127 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:15,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:43:15,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1129899601, now seen corresponding path program 1 times [2022-11-22 01:43:15,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:15,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507185744] [2022-11-22 01:43:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:15,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 898 trivial. 0 not checked. [2022-11-22 01:43:16,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:16,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507185744] [2022-11-22 01:43:16,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507185744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:16,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924234998] [2022-11-22 01:43:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:16,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:16,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:16,365 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:16,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:43:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:18,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 6312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:43:18,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:18,553 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 826 trivial. 0 not checked. [2022-11-22 01:43:18,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:18,922 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2022-11-22 01:43:18,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924234998] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:18,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:43:18,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2022-11-22 01:43:18,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356281061] [2022-11-22 01:43:18,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:18,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:43:18,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:18,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:43:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:43:18,925 INFO L87 Difference]: Start difference. First operand 18467 states and 26069 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-22 01:43:20,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:22,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:25,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:26,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:26,744 INFO L93 Difference]: Finished difference Result 36916 states and 52532 transitions. [2022-11-22 01:43:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:43:26,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 391 [2022-11-22 01:43:26,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:26,848 INFO L225 Difference]: With dead ends: 36916 [2022-11-22 01:43:26,848 INFO L226 Difference]: Without dead ends: 18487 [2022-11-22 01:43:26,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:43:26,932 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 1 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:26,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3163 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2022-11-22 01:43:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18487 states. [2022-11-22 01:43:27,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18487 to 18487. [2022-11-22 01:43:27,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18487 states, 11003 states have (on average 1.2531127874216124) internal successors, (13788), 11389 states have internal predecessors, (13788), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1465 states have return successors, (6283), 5965 states have call predecessors, (6283), 6017 states have call successors, (6283) [2022-11-22 01:43:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18487 states to 18487 states and 26089 transitions. [2022-11-22 01:43:27,957 INFO L78 Accepts]: Start accepts. Automaton has 18487 states and 26089 transitions. Word has length 391 [2022-11-22 01:43:27,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:27,958 INFO L495 AbstractCegarLoop]: Abstraction has 18487 states and 26089 transitions. [2022-11-22 01:43:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (72), 2 states have call predecessors, (72), 2 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2022-11-22 01:43:27,958 INFO L276 IsEmpty]: Start isEmpty. Operand 18487 states and 26089 transitions. [2022-11-22 01:43:28,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2022-11-22 01:43:28,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:28,009 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:28,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:28,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:43:28,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:28,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:28,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1388229652, now seen corresponding path program 1 times [2022-11-22 01:43:28,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:28,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964069362] [2022-11-22 01:43:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:28,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2022-11-22 01:43:29,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:29,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964069362] [2022-11-22 01:43:29,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964069362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:29,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206194676] [2022-11-22 01:43:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:29,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:29,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:29,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:29,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:43:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:31,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 6338 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:43:31,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2022-11-22 01:43:31,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:43:31,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206194676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:43:31,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:43:31,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2022-11-22 01:43:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038507233] [2022-11-22 01:43:31,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:43:31,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:43:31,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:31,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:43:31,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:43:31,550 INFO L87 Difference]: Start difference. First operand 18487 states and 26089 transitions. Second operand has 6 states, 4 states have (on average 37.5) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (73), 2 states have call predecessors, (73), 3 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-22 01:43:33,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:34,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:38,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:41,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:43,580 INFO L93 Difference]: Finished difference Result 37050 states and 52632 transitions. [2022-11-22 01:43:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:43:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 37.5) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (73), 2 states have call predecessors, (73), 3 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) Word has length 396 [2022-11-22 01:43:43,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:43,661 INFO L225 Difference]: With dead ends: 37050 [2022-11-22 01:43:43,661 INFO L226 Difference]: Without dead ends: 18601 [2022-11-22 01:43:43,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:43:43,729 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 62 mSDsluCounter, 6019 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 7559 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:43,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 7559 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1199 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-11-22 01:43:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18601 states. [2022-11-22 01:43:44,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18601 to 18487. [2022-11-22 01:43:44,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18487 states, 11003 states have (on average 1.2512951013359992) internal successors, (13768), 11389 states have internal predecessors, (13768), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1465 states have return successors, (6283), 5965 states have call predecessors, (6283), 6017 states have call successors, (6283) [2022-11-22 01:43:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18487 states to 18487 states and 26069 transitions. [2022-11-22 01:43:44,631 INFO L78 Accepts]: Start accepts. Automaton has 18487 states and 26069 transitions. Word has length 396 [2022-11-22 01:43:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:44,632 INFO L495 AbstractCegarLoop]: Abstraction has 18487 states and 26069 transitions. [2022-11-22 01:43:44,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 37.5) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (73), 2 states have call predecessors, (73), 3 states have return successors, (66), 3 states have call predecessors, (66), 3 states have call successors, (66) [2022-11-22 01:43:44,633 INFO L276 IsEmpty]: Start isEmpty. Operand 18487 states and 26069 transitions. [2022-11-22 01:43:44,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-22 01:43:44,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:44,686 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 10, 7, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:44,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:43:44,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:44,908 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1205234328, now seen corresponding path program 1 times [2022-11-22 01:43:44,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:44,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133171226] [2022-11-22 01:43:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:44,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2022-11-22 01:43:45,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:45,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133171226] [2022-11-22 01:43:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133171226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:45,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656779082] [2022-11-22 01:43:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:45,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:45,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:45,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:45,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:43:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:48,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 6377 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-22 01:43:48,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:43:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-22 01:43:48,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:43:48,608 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2022-11-22 01:43:48,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656779082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:43:48,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163428861] [2022-11-22 01:43:48,646 INFO L159 IcfgInterpreter]: Started Sifa with 238 locations of interest [2022-11-22 01:43:48,647 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:43:48,653 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 01:43:48,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:43:48,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-22 01:43:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48962387] [2022-11-22 01:43:48,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 01:43:48,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:43:48,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:43:48,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:43:48,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:43:48,665 INFO L87 Difference]: Start difference. First operand 18487 states and 26069 transitions. Second operand has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-22 01:43:50,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:53,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:43:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:43:55,149 INFO L93 Difference]: Finished difference Result 36950 states and 52440 transitions. [2022-11-22 01:43:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:43:55,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) Word has length 404 [2022-11-22 01:43:55,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:43:55,226 INFO L225 Difference]: With dead ends: 36950 [2022-11-22 01:43:55,226 INFO L226 Difference]: Without dead ends: 18501 [2022-11-22 01:43:55,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 810 GetRequests, 805 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:43:55,295 INFO L413 NwaCegarLoop]: 1584 mSDtfsCounter, 0 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:43:55,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4748 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 542 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2022-11-22 01:43:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18501 states. [2022-11-22 01:43:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18501 to 18501. [2022-11-22 01:43:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18501 states, 11017 states have (on average 1.2509757647272397) internal successors, (13782), 11403 states have internal predecessors, (13782), 6018 states have call successors, (6018), 1460 states have call predecessors, (6018), 1465 states have return successors, (6283), 5965 states have call predecessors, (6283), 6017 states have call successors, (6283) [2022-11-22 01:43:56,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18501 states to 18501 states and 26083 transitions. [2022-11-22 01:43:56,414 INFO L78 Accepts]: Start accepts. Automaton has 18501 states and 26083 transitions. Word has length 404 [2022-11-22 01:43:56,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:43:56,416 INFO L495 AbstractCegarLoop]: Abstraction has 18501 states and 26083 transitions. [2022-11-22 01:43:56,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.571428571428573) internal successors, (186), 7 states have internal predecessors, (186), 2 states have call successors, (104), 2 states have call predecessors, (104), 2 states have return successors, (97), 2 states have call predecessors, (97), 2 states have call successors, (97) [2022-11-22 01:43:56,416 INFO L276 IsEmpty]: Start isEmpty. Operand 18501 states and 26083 transitions. [2022-11-22 01:43:56,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2022-11-22 01:43:56,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:43:56,475 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 11, 10, 7, 5, 5, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:43:56,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:43:56,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:56,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:43:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:43:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1934101618, now seen corresponding path program 2 times [2022-11-22 01:43:56,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:43:56,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901209164] [2022-11-22 01:43:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:43:56,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:43:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:43:57,869 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2022-11-22 01:43:57,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:43:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901209164] [2022-11-22 01:43:57,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901209164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:43:57,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375068295] [2022-11-22 01:43:57,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:43:57,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:43:57,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:43:57,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:43:57,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faa71402-822b-4f66-b924-fcda15670e90/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process