./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V --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 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:06:43,031 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:06:43,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:06:43,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:06:43,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:06:43,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:06:43,089 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:06:43,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:06:43,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:06:43,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:06:43,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:06:43,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:06:43,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:06:43,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:06:43,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:06:43,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:06:43,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:06:43,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:06:43,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:06:43,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:06:43,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:06:43,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:06:43,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:06:43,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:06:43,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:06:43,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:06:43,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:06:43,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:06:43,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:06:43,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:06:43,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:06:43,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:06:43,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:06:43,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:06:43,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:06:43,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:06:43,156 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:06:43,156 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:06:43,157 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:06:43,158 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:06:43,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:06:43,159 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:06:43,201 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:06:43,201 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:06:43,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:06:43,202 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:06:43,203 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:06:43,209 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:06:43,209 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:06:43,210 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:06:43,210 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:06:43,210 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:06:43,211 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:06:43,211 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:06:43,211 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:06:43,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:06:43,212 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:06:43,212 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:06:43,212 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:06:43,212 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:06:43,214 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:06:43,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:06:43,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:06:43,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:06:43,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:06:43,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:06:43,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:06:43,215 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:06:43,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:06:43,217 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:06:43,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:06:43,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:06:43,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:06:43,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:06:43,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:06:43,218 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:06:43,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:06:43,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:06:43,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:06:43,219 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:06:43,219 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0991342cd9e67cbadb964d86a1516812eb3aa45e84d4674c09b8e10a19f475c1 [2021-11-23 03:06:43,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:06:43,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:06:43,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:06:43,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:06:43,514 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:06:43,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-23 03:06:43,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/data/51fec80e2/e59dcfb1dd4f445b99d65e912554c893/FLAGc0cf7d1a4 [2021-11-23 03:06:44,638 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:06:44,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-23 03:06:44,696 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/data/51fec80e2/e59dcfb1dd4f445b99d65e912554c893/FLAGc0cf7d1a4 [2021-11-23 03:06:45,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/data/51fec80e2/e59dcfb1dd4f445b99d65e912554c893 [2021-11-23 03:06:45,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:06:45,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:06:45,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:06:45,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:06:45,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:06:45,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:45" (1/1) ... [2021-11-23 03:06:45,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eb14595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:45, skipping insertion in model container [2021-11-23 03:06:45,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:06:45" (1/1) ... [2021-11-23 03:06:45,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:06:45,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:06:47,755 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2021-11-23 03:06:47,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:06:47,937 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:06:48,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i[339370,339383] [2021-11-23 03:06:48,479 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:06:48,627 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:06:48,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48 WrapperNode [2021-11-23 03:06:48,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:06:48,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:06:48,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:06:48,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:06:48,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:48,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,143 INFO L137 Inliner]: procedures = 326, calls = 4469, calls flagged for inlining = 131, calls inlined = 121, statements flattened = 8803 [2021-11-23 03:06:49,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:06:49,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:06:49,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:06:49,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:06:49,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,492 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:06:49,672 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:06:49,672 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:06:49,672 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:06:49,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (1/1) ... [2021-11-23 03:06:49,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:06:49,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:06:49,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:06:49,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d637561-45da-4c22-9726-95f235a8b5a9/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:06:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure hcd_to_ohci [2021-11-23 03:06:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure hcd_to_ohci [2021-11-23 03:06:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-11-23 03:06:49,761 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-11-23 03:06:49,761 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-11-23 03:06:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-11-23 03:06:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2021-11-23 03:06:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2021-11-23 03:06:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure start_ed_unlink [2021-11-23 03:06:49,762 INFO L138 BoogieDeclarations]: Found implementation of procedure start_ed_unlink [2021-11-23 03:06:49,762 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_status [2021-11-23 03:06:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_status [2021-11-23 03:06:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_le32 [2021-11-23 03:06:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_le32 [2021-11-23 03:06:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_suspend [2021-11-23 03:06:49,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_suspend [2021-11-23 03:06:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_alloc [2021-11-23 03:06:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_alloc [2021-11-23 03:06:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure show_list [2021-11-23 03:06:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure show_list [2021-11-23 03:06:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_probe [2021-11-23 03:06:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_probe [2021-11-23 03:06:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:06:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:06:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2021-11-23 03:06:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2021-11-23 03:06:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpup [2021-11-23 03:06:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpup [2021-11-23 03:06:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure hcfs2string [2021-11-23 03:06:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure hcfs2string [2021-11-23 03:06:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_zfmicro [2021-11-23 03:06:49,766 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_zfmicro [2021-11-23 03:06:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure usb_disabled [2021-11-23 03:06:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_disabled [2021-11-23 03:06:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_status_data [2021-11-23 03:06:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_status_data [2021-11-23 03:06:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_reset [2021-11-23 03:06:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_reset [2021-11-23 03:06:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_shutdown [2021-11-23 03:06:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_shutdown [2021-11-23 03:06:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:06:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:06:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:06:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:06:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_intr_mask [2021-11-23 03:06:49,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_intr_mask [2021-11-23 03:06:49,769 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_buffer [2021-11-23 03:06:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_buffer [2021-11-23 03:06:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_writel [2021-11-23 03:06:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_writel [2021-11-23 03:06:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-11-23 03:06:49,771 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-11-23 03:06:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:06:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:06:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hwPSWp [2021-11-23 03:06:49,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hwPSWp [2021-11-23 03:06:49,772 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_resume [2021-11-23 03:06:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_resume [2021-11-23 03:06:49,773 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_suspend [2021-11-23 03:06:49,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_suspend [2021-11-23 03:06:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure debug_output [2021-11-23 03:06:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_output [2021-11-23 03:06:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-11-23 03:06:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-11-23 03:06:49,774 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:06:49,774 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:06:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure ed_schedule [2021-11-23 03:06:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_schedule [2021-11-23 03:06:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hcd_init [2021-11-23 03:06:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hcd_init [2021-11-23 03:06:49,775 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_roothub [2021-11-23 03:06:49,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_roothub [2021-11-23 03:06:49,776 INFO L130 BoogieDeclarations]: Found specification of procedure round_jiffies [2021-11-23 03:06:49,776 INFO L138 BoogieDeclarations]: Found implementation of procedure round_jiffies [2021-11-23 03:06:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2021-11-23 03:06:49,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2021-11-23 03:06:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:06:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_stop [2021-11-23 03:06:49,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_stop [2021-11-23 03:06:49,777 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:06:49,778 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:06:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:06:49,778 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_create [2021-11-23 03:06:49,779 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_create [2021-11-23 03:06:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_remove [2021-11-23 03:06:49,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_remove [2021-11-23 03:06:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure check_ed [2021-11-23 03:06:49,779 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ed [2021-11-23 03:06:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_restart [2021-11-23 03:06:49,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_restart [2021-11-23 03:06:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_nec [2021-11-23 03:06:49,781 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_nec [2021-11-23 03:06:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:06:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:06:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_destroy [2021-11-23 03:06:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_destroy [2021-11-23 03:06:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure td_free [2021-11-23 03:06:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure td_free [2021-11-23 03:06:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure broken_suspend [2021-11-23 03:06:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure broken_suspend [2021-11-23 03:06:49,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:06:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_resume [2021-11-23 03:06:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_resume [2021-11-23 03:06:49,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_platform_shutdown [2021-11-23 03:06:49,784 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_platform_shutdown [2021-11-23 03:06:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:06:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_portstatus [2021-11-23 03:06:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_portstatus [2021-11-23 03:06:49,785 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2021-11-23 03:06:49,785 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2021-11-23 03:06:49,786 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hc_died [2021-11-23 03:06:49,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hc_died [2021-11-23 03:06:49,789 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_remove [2021-11-23 03:06:49,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_remove [2021-11-23 03:06:49,790 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-23 03:06:49,790 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-23 03:06:49,791 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-11-23 03:06:49,792 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-11-23 03:06:49,792 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2021-11-23 03:06:49,793 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2021-11-23 03:06:49,793 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:06:49,799 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:06:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-23 03:06:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-23 03:06:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-23 03:06:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-23 03:06:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_resume [2021-11-23 03:06:49,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_resume [2021-11-23 03:06:49,800 INFO L130 BoogieDeclarations]: Found specification of procedure ed_free [2021-11-23 03:06:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_free [2021-11-23 03:06:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:06:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:06:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_put_hcd [2021-11-23 03:06:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_put_hcd [2021-11-23 03:06:49,801 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_start [2021-11-23 03:06:49,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_start [2021-11-23 03:06:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump [2021-11-23 03:06:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump [2021-11-23 03:06:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_frame_no [2021-11-23 03:06:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_frame_no [2021-11-23 03:06:49,802 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 03:06:49,802 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 03:06:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-11-23 03:06:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-11-23 03:06:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:06:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:06:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure sb800_prefetch [2021-11-23 03:06:49,803 INFO L138 BoogieDeclarations]: Found implementation of procedure sb800_prefetch [2021-11-23 03:06:49,803 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_hub_control [2021-11-23 03:06:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_hub_control [2021-11-23 03:06:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_unlink_urb_from_ep [2021-11-23 03:06:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_unlink_urb_from_ep [2021-11-23 03:06:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:06:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure finish_urb [2021-11-23 03:06:49,804 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_urb [2021-11-23 03:06:49,804 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_rh_suspend [2021-11-23 03:06:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_rh_suspend [2021-11-23 03:06:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_a [2021-11-23 03:06:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_a [2021-11-23 03:06:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_irq [2021-11-23 03:06:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_irq [2021-11-23 03:06:49,805 INFO L130 BoogieDeclarations]: Found specification of procedure rh_state_string [2021-11-23 03:06:49,805 INFO L138 BoogieDeclarations]: Found implementation of procedure rh_state_string [2021-11-23 03:06:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure roothub_b [2021-11-23 03:06:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure roothub_b [2021-11-23 03:06:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_enqueue [2021-11-23 03:06:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_enqueue [2021-11-23 03:06:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_start_port_reset [2021-11-23 03:06:49,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_start_port_reset [2021-11-23 03:06:49,806 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_to_hcd [2021-11-23 03:06:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_to_hcd [2021-11-23 03:06:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_pci_start [2021-11-23 03:06:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_pci_start [2021-11-23 03:06:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure td_alloc [2021-11-23 03:06:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure td_alloc [2021-11-23 03:06:49,807 INFO L130 BoogieDeclarations]: Found specification of procedure find_head [2021-11-23 03:06:49,807 INFO L138 BoogieDeclarations]: Found implementation of procedure find_head [2021-11-23 03:06:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:06:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:06:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_run [2021-11-23 03:06:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_run [2021-11-23 03:06:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-23 03:06:49,808 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-23 03:06:49,808 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_endpoint_disable [2021-11-23 03:06:49,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_endpoint_disable [2021-11-23 03:06:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:06:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure takeback_td [2021-11-23 03:06:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure takeback_td [2021-11-23 03:06:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdprefetch [2021-11-23 03:06:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdprefetch [2021-11-23 03:06:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2021-11-23 03:06:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2021-11-23 03:06:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:06:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:06:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure _ohci_readl [2021-11-23 03:06:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure _ohci_readl [2021-11-23 03:06:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:06:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure pci_dev_put [2021-11-23 03:06:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_dev_put [2021-11-23 03:06:49,812 INFO L130 BoogieDeclarations]: Found specification of procedure dl_done_list [2021-11-23 03:06:49,812 INFO L138 BoogieDeclarations]: Found implementation of procedure dl_done_list [2021-11-23 03:06:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_poll_rh_status [2021-11-23 03:06:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_poll_rh_status [2021-11-23 03:06:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-11-23 03:06:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-11-23 03:06:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:06:49,813 INFO L130 BoogieDeclarations]: Found specification of procedure periodic_reinit [2021-11-23 03:06:49,813 INFO L138 BoogieDeclarations]: Found implementation of procedure periodic_reinit [2021-11-23 03:06:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure __le32_to_cpup [2021-11-23 03:06:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __le32_to_cpup [2021-11-23 03:06:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:06:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:06:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:06:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure td_done [2021-11-23 03:06:49,814 INFO L138 BoogieDeclarations]: Found implementation of procedure td_done [2021-11-23 03:06:49,814 INFO L130 BoogieDeclarations]: Found specification of procedure td_fill [2021-11-23 03:06:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure td_fill [2021-11-23 03:06:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_urb_dequeue [2021-11-23 03:06:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_urb_dequeue [2021-11-23 03:06:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:06:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:06:49,815 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_init [2021-11-23 03:06:49,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_init [2021-11-23 03:06:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2021-11-23 03:06:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2021-11-23 03:06:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc16 [2021-11-23 03:06:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc16 [2021-11-23 03:06:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:06:49,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:06:49,816 INFO L130 BoogieDeclarations]: Found specification of procedure quirk_amdiso [2021-11-23 03:06:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure quirk_amdiso [2021-11-23 03:06:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2021-11-23 03:06:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure default_llseek [2021-11-23 03:06:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-11-23 03:06:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-11-23 03:06:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure ed_deschedule [2021-11-23 03:06:49,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ed_deschedule [2021-11-23 03:06:49,817 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_resume_root_hub [2021-11-23 03:06:49,819 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_resume_root_hub [2021-11-23 03:06:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure urb_free_priv [2021-11-23 03:06:49,822 INFO L138 BoogieDeclarations]: Found implementation of procedure urb_free_priv [2021-11-23 03:06:49,822 INFO L130 BoogieDeclarations]: Found specification of procedure finish_unlinks [2021-11-23 03:06:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_unlinks [2021-11-23 03:06:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure hc32_to_cpu [2021-11-23 03:06:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure hc32_to_cpu [2021-11-23 03:06:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2021-11-23 03:06:49,823 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2021-11-23 03:06:49,823 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_dump_status [2021-11-23 03:06:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_dump_status [2021-11-23 03:06:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure maybe_print_eds [2021-11-23 03:06:49,824 INFO L138 BoogieDeclarations]: Found implementation of procedure maybe_print_eds [2021-11-23 03:06:49,824 INFO L130 BoogieDeclarations]: Found specification of procedure debug_close [2021-11-23 03:06:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_close [2021-11-23 03:06:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_get_frame [2021-11-23 03:06:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_get_frame [2021-11-23 03:06:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2021-11-23 03:06:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_debug_buffer [2021-11-23 03:06:49,825 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:06:49,825 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:06:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-11-23 03:06:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-11-23 03:06:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_to_hc32 [2021-11-23 03:06:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_to_hc32 [2021-11-23 03:06:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:06:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:06:49,826 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_usb_reset [2021-11-23 03:06:49,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_usb_reset [2021-11-23 03:06:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_resume [2021-11-23 03:06:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_resume [2021-11-23 03:06:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 03:06:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 03:06:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 03:06:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 03:06:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_bus_suspend [2021-11-23 03:06:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_bus_suspend [2021-11-23 03:06:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure ohci_platform_reset [2021-11-23 03:06:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ohci_platform_reset [2021-11-23 03:06:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_hcd_pci_shutdown [2021-11-23 03:06:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_hcd_pci_shutdown [2021-11-23 03:06:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:06:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:06:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:06:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure dma_pool_free [2021-11-23 03:06:49,829 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_pool_free [2021-11-23 03:06:50,862 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:06:50,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:07:00,169 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:07:03,530 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:07:03,530 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 03:07:03,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:03 BoogieIcfgContainer [2021-11-23 03:07:03,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:07:03,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:07:03,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:07:03,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:07:03,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:06:45" (1/3) ... [2021-11-23 03:07:03,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270e187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:03, skipping insertion in model container [2021-11-23 03:07:03,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:06:48" (2/3) ... [2021-11-23 03:07:03,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270e187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:07:03, skipping insertion in model container [2021-11-23 03:07:03,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:07:03" (3/3) ... [2021-11-23 03:07:03,548 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--usb--host--ohci-hcd.ko-main.cil.out.i [2021-11-23 03:07:03,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:07:03,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:07:03,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:07:03,644 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:07:03,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:07:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 2671 states, 1689 states have (on average 1.3718176435760805) internal successors, (2317), 1760 states have internal predecessors, (2317), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) [2021-11-23 03:07:03,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:07:03,739 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:03,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:03,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:03,746 INFO L85 PathProgramCache]: Analyzing trace with hash 450264809, now seen corresponding path program 1 times [2021-11-23 03:07:03,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:03,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076829213] [2021-11-23 03:07:03,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:03,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:04,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:04,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:04,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:04,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076829213] [2021-11-23 03:07:04,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076829213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:04,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:04,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:07:04,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551298119] [2021-11-23 03:07:04,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:04,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:04,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:04,644 INFO L87 Difference]: Start difference. First operand has 2671 states, 1689 states have (on average 1.3718176435760805) internal successors, (2317), 1760 states have internal predecessors, (2317), 848 states have call successors, (848), 136 states have call predecessors, (848), 136 states have return successors, (848), 839 states have call predecessors, (848), 848 states have call successors, (848) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:07,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:07,386 INFO L93 Difference]: Finished difference Result 7968 states and 12128 transitions. [2021-11-23 03:07:07,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:07,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 03:07:07,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:07,479 INFO L225 Difference]: With dead ends: 7968 [2021-11-23 03:07:07,479 INFO L226 Difference]: Without dead ends: 5292 [2021-11-23 03:07:07,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:07,522 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 3947 mSDsluCounter, 3966 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3947 SdHoareTripleChecker+Valid, 8135 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:07,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3947 Valid, 8135 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 03:07:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-11-23 03:07:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5276. [2021-11-23 03:07:08,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 3327 states have (on average 1.3694018635407275) internal successors, (4556), 3462 states have internal predecessors, (4556), 1678 states have call successors, (1678), 271 states have call predecessors, (1678), 270 states have return successors, (1672), 1652 states have call predecessors, (1672), 1672 states have call successors, (1672) [2021-11-23 03:07:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7906 transitions. [2021-11-23 03:07:08,261 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7906 transitions. Word has length 12 [2021-11-23 03:07:08,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:08,262 INFO L470 AbstractCegarLoop]: Abstraction has 5276 states and 7906 transitions. [2021-11-23 03:07:08,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7906 transitions. [2021-11-23 03:07:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 03:07:08,273 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:08,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:08,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:07:08,274 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:08,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1108997819, now seen corresponding path program 1 times [2021-11-23 03:07:08,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:08,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755397542] [2021-11-23 03:07:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:08,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:08,606 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:08,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755397542] [2021-11-23 03:07:08,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755397542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:08,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:08,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:07:08,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093704760] [2021-11-23 03:07:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:08,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:08,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:08,610 INFO L87 Difference]: Start difference. First operand 5276 states and 7906 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:11,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:11,514 INFO L93 Difference]: Finished difference Result 15793 states and 23658 transitions. [2021-11-23 03:07:11,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:11,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 03:07:11,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:11,655 INFO L225 Difference]: With dead ends: 15793 [2021-11-23 03:07:11,655 INFO L226 Difference]: Without dead ends: 10518 [2021-11-23 03:07:11,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:11,717 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 3941 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3941 SdHoareTripleChecker+Valid, 8309 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:11,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3941 Valid, 8309 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 03:07:11,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2021-11-23 03:07:12,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 10502. [2021-11-23 03:07:12,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10502 states, 6619 states have (on average 1.3680314246865086) internal successors, (9055), 6886 states have internal predecessors, (9055), 3342 states have call successors, (3342), 541 states have call predecessors, (3342), 540 states have return successors, (3336), 3294 states have call predecessors, (3336), 3336 states have call successors, (3336) [2021-11-23 03:07:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10502 states to 10502 states and 15733 transitions. [2021-11-23 03:07:12,749 INFO L78 Accepts]: Start accepts. Automaton has 10502 states and 15733 transitions. Word has length 14 [2021-11-23 03:07:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:12,750 INFO L470 AbstractCegarLoop]: Abstraction has 10502 states and 15733 transitions. [2021-11-23 03:07:12,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 10502 states and 15733 transitions. [2021-11-23 03:07:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:07:12,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:12,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:12,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:07:12,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:12,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:12,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1069301509, now seen corresponding path program 1 times [2021-11-23 03:07:12,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:12,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228443976] [2021-11-23 03:07:12,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:12,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:13,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:13,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:13,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228443976] [2021-11-23 03:07:13,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228443976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:13,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:13,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:07:13,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47906195] [2021-11-23 03:07:13,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:13,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:13,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:13,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:13,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:13,078 INFO L87 Difference]: Start difference. First operand 10502 states and 15733 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:16,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:16,637 INFO L93 Difference]: Finished difference Result 31400 states and 47037 transitions. [2021-11-23 03:07:16,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:16,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 03:07:16,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:16,844 INFO L225 Difference]: With dead ends: 31400 [2021-11-23 03:07:16,845 INFO L226 Difference]: Without dead ends: 20899 [2021-11-23 03:07:16,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:16,937 INFO L933 BasicCegarLoop]: 5087 mSDtfsCounter, 3939 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3939 SdHoareTripleChecker+Valid, 8720 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:16,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3939 Valid, 8720 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:07:16,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20899 states. [2021-11-23 03:07:18,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20899 to 20883. [2021-11-23 03:07:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20883 states, 13155 states have (on average 1.3668567084758647) internal successors, (17981), 13685 states have internal predecessors, (17981), 6654 states have call successors, (6654), 1074 states have call predecessors, (6654), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-23 03:07:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20883 states to 20883 states and 31283 transitions. [2021-11-23 03:07:18,554 INFO L78 Accepts]: Start accepts. Automaton has 20883 states and 31283 transitions. Word has length 16 [2021-11-23 03:07:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:18,555 INFO L470 AbstractCegarLoop]: Abstraction has 20883 states and 31283 transitions. [2021-11-23 03:07:18,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:07:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 20883 states and 31283 transitions. [2021-11-23 03:07:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:07:18,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:18,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:18,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:07:18,563 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:18,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:18,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1527170334, now seen corresponding path program 1 times [2021-11-23 03:07:18,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498073565] [2021-11-23 03:07:18,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:18,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:18,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:18,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:18,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498073565] [2021-11-23 03:07:18,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498073565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:18,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:18,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:07:18,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455736455] [2021-11-23 03:07:18,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:18,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:18,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:18,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:18,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:18,902 INFO L87 Difference]: Start difference. First operand 20883 states and 31283 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:20,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:20,974 INFO L93 Difference]: Finished difference Result 20885 states and 31284 transitions. [2021-11-23 03:07:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-11-23 03:07:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:21,225 INFO L225 Difference]: With dead ends: 20885 [2021-11-23 03:07:21,225 INFO L226 Difference]: Without dead ends: 20882 [2021-11-23 03:07:21,239 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:07:21,244 INFO L933 BasicCegarLoop]: 3643 mSDtfsCounter, 3956 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3956 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:21,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3956 Valid, 3643 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:07:21,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20882 states. [2021-11-23 03:07:22,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20882 to 20882. [2021-11-23 03:07:22,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20882 states, 13155 states have (on average 1.3667806917521854) internal successors, (17980), 13684 states have internal predecessors, (17980), 6653 states have call successors, (6653), 1074 states have call predecessors, (6653), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-23 03:07:22,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20882 states to 20882 states and 31281 transitions. [2021-11-23 03:07:22,992 INFO L78 Accepts]: Start accepts. Automaton has 20882 states and 31281 transitions. Word has length 25 [2021-11-23 03:07:22,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:22,992 INFO L470 AbstractCegarLoop]: Abstraction has 20882 states and 31281 transitions. [2021-11-23 03:07:22,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 20882 states and 31281 transitions. [2021-11-23 03:07:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:07:22,998 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:22,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:22,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:07:22,999 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash 96153969, now seen corresponding path program 1 times [2021-11-23 03:07:22,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:23,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948872740] [2021-11-23 03:07:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:23,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:23,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:23,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:23,361 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:23,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948872740] [2021-11-23 03:07:23,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948872740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:23,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:23,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:07:23,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476165549] [2021-11-23 03:07:23,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:23,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:23,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:23,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:23,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:23,364 INFO L87 Difference]: Start difference. First operand 20882 states and 31281 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:25,166 INFO L93 Difference]: Finished difference Result 20884 states and 31282 transitions. [2021-11-23 03:07:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:25,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-23 03:07:25,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:25,303 INFO L225 Difference]: With dead ends: 20884 [2021-11-23 03:07:25,303 INFO L226 Difference]: Without dead ends: 20881 [2021-11-23 03:07:25,317 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:07:25,318 INFO L933 BasicCegarLoop]: 3641 mSDtfsCounter, 3953 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3953 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:25,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3953 Valid, 3641 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 03:07:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20881 states. [2021-11-23 03:07:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20881 to 20881. [2021-11-23 03:07:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20881 states, 13155 states have (on average 1.3667046750285063) internal successors, (17979), 13683 states have internal predecessors, (17979), 6652 states have call successors, (6652), 1074 states have call predecessors, (6652), 1073 states have return successors, (6648), 6562 states have call predecessors, (6648), 6648 states have call successors, (6648) [2021-11-23 03:07:27,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20881 states to 20881 states and 31279 transitions. [2021-11-23 03:07:27,045 INFO L78 Accepts]: Start accepts. Automaton has 20881 states and 31279 transitions. Word has length 26 [2021-11-23 03:07:27,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:27,046 INFO L470 AbstractCegarLoop]: Abstraction has 20881 states and 31279 transitions. [2021-11-23 03:07:27,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:27,046 INFO L276 IsEmpty]: Start isEmpty. Operand 20881 states and 31279 transitions. [2021-11-23 03:07:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:07:27,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:27,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:27,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:07:27,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:27,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1315675519, now seen corresponding path program 1 times [2021-11-23 03:07:27,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:27,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736962954] [2021-11-23 03:07:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:27,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:27,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:27,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:27,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736962954] [2021-11-23 03:07:27,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736962954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:27,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:27,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:07:27,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996563084] [2021-11-23 03:07:27,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:27,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:27,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:27,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:27,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:27,338 INFO L87 Difference]: Start difference. First operand 20881 states and 31279 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:30,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:30,229 INFO L93 Difference]: Finished difference Result 32225 states and 47591 transitions. [2021-11-23 03:07:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:30,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-23 03:07:30,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:30,457 INFO L225 Difference]: With dead ends: 32225 [2021-11-23 03:07:30,458 INFO L226 Difference]: Without dead ends: 32221 [2021-11-23 03:07:30,483 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:07:30,485 INFO L933 BasicCegarLoop]: 4349 mSDtfsCounter, 3925 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3925 SdHoareTripleChecker+Valid, 6471 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:30,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3925 Valid, 6471 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-23 03:07:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32221 states. [2021-11-23 03:07:32,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32221 to 32219. [2021-11-23 03:07:32,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32219 states, 20085 states have (on average 1.3415484192183222) internal successors, (26945), 20870 states have internal predecessors, (26945), 10318 states have call successors, (10318), 1816 states have call predecessors, (10318), 1815 states have return successors, (10316), 10195 states have call predecessors, (10316), 10316 states have call successors, (10316) [2021-11-23 03:07:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32219 states to 32219 states and 47579 transitions. [2021-11-23 03:07:32,825 INFO L78 Accepts]: Start accepts. Automaton has 32219 states and 47579 transitions. Word has length 27 [2021-11-23 03:07:32,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:32,825 INFO L470 AbstractCegarLoop]: Abstraction has 32219 states and 47579 transitions. [2021-11-23 03:07:32,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:32,826 INFO L276 IsEmpty]: Start isEmpty. Operand 32219 states and 47579 transitions. [2021-11-23 03:07:32,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:07:32,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:32,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:07:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:07:32,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2132711820, now seen corresponding path program 1 times [2021-11-23 03:07:32,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221050932] [2021-11-23 03:07:32,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:32,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:33,400 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:33,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221050932] [2021-11-23 03:07:33,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221050932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:33,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:33,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:07:33,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472756053] [2021-11-23 03:07:33,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:33,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:07:33,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:07:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:07:33,403 INFO L87 Difference]: Start difference. First operand 32219 states and 47579 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:35,556 INFO L93 Difference]: Finished difference Result 32221 states and 47580 transitions. [2021-11-23 03:07:35,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:07:35,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-23 03:07:35,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:35,805 INFO L225 Difference]: With dead ends: 32221 [2021-11-23 03:07:35,805 INFO L226 Difference]: Without dead ends: 32148 [2021-11-23 03:07:35,841 INFO L932 BasicCegarLoop]: 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 [2021-11-23 03:07:35,842 INFO L933 BasicCegarLoop]: 3636 mSDtfsCounter, 3945 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3945 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:35,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3945 Valid, 3636 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-23 03:07:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32148 states. [2021-11-23 03:07:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32148 to 32148. [2021-11-23 03:07:37,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32148 states, 20055 states have (on average 1.3416105709299426) internal successors, (26906), 20832 states have internal predecessors, (26906), 10285 states have call successors, (10285), 1808 states have call predecessors, (10285), 1807 states have return successors, (10284), 10170 states have call predecessors, (10284), 10284 states have call successors, (10284) [2021-11-23 03:07:38,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32148 states to 32148 states and 47475 transitions. [2021-11-23 03:07:38,382 INFO L78 Accepts]: Start accepts. Automaton has 32148 states and 47475 transitions. Word has length 28 [2021-11-23 03:07:38,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:38,397 INFO L470 AbstractCegarLoop]: Abstraction has 32148 states and 47475 transitions. [2021-11-23 03:07:38,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:07:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 32148 states and 47475 transitions. [2021-11-23 03:07:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:07:38,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:38,439 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:07:38,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:07:38,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:38,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2037544401, now seen corresponding path program 1 times [2021-11-23 03:07:38,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:38,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326682724] [2021-11-23 03:07:38,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:38,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:38,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:38,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:38,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326682724] [2021-11-23 03:07:38,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326682724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:38,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:38,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:07:38,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109906710] [2021-11-23 03:07:38,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:38,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:07:38,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:38,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:07:38,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:38,791 INFO L87 Difference]: Start difference. First operand 32148 states and 47475 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:07:42,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:42,743 INFO L93 Difference]: Finished difference Result 64297 states and 94951 transitions. [2021-11-23 03:07:42,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:07:42,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-11-23 03:07:42,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:42,984 INFO L225 Difference]: With dead ends: 64297 [2021-11-23 03:07:42,984 INFO L226 Difference]: Without dead ends: 32148 [2021-11-23 03:07:43,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:07:43,397 INFO L933 BasicCegarLoop]: 3620 mSDtfsCounter, 1 mSDsluCounter, 7892 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 10855 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:43,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 10855 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 03:07:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32148 states. [2021-11-23 03:07:44,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32148 to 32148. [2021-11-23 03:07:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32148 states, 20055 states have (on average 1.3412116679132386) internal successors, (26898), 20832 states have internal predecessors, (26898), 10285 states have call successors, (10285), 1808 states have call predecessors, (10285), 1807 states have return successors, (10284), 10170 states have call predecessors, (10284), 10284 states have call successors, (10284) [2021-11-23 03:07:45,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32148 states to 32148 states and 47467 transitions. [2021-11-23 03:07:45,187 INFO L78 Accepts]: Start accepts. Automaton has 32148 states and 47467 transitions. Word has length 42 [2021-11-23 03:07:45,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:45,187 INFO L470 AbstractCegarLoop]: Abstraction has 32148 states and 47467 transitions. [2021-11-23 03:07:45,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:07:45,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32148 states and 47467 transitions. [2021-11-23 03:07:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-23 03:07:45,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:45,209 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:07:45,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:07:45,210 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:45,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:45,210 INFO L85 PathProgramCache]: Analyzing trace with hash 467799789, now seen corresponding path program 1 times [2021-11-23 03:07:45,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:45,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599803005] [2021-11-23 03:07:45,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:45,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:45,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:45,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599803005] [2021-11-23 03:07:45,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599803005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:45,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:45,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:07:45,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754444300] [2021-11-23 03:07:45,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:45,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:07:45,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:45,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:07:45,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:45,515 INFO L87 Difference]: Start difference. First operand 32148 states and 47467 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:07:49,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:07:49,974 INFO L93 Difference]: Finished difference Result 79542 states and 117491 transitions. [2021-11-23 03:07:49,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:07:49,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2021-11-23 03:07:49,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:07:50,253 INFO L225 Difference]: With dead ends: 79542 [2021-11-23 03:07:50,254 INFO L226 Difference]: Without dead ends: 47395 [2021-11-23 03:07:50,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:50,475 INFO L933 BasicCegarLoop]: 7106 mSDtfsCounter, 3932 mSDsluCounter, 7860 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 14312 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:07:50,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3932 Valid, 14312 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 03:07:50,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47395 states. [2021-11-23 03:07:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47395 to 47389. [2021-11-23 03:07:52,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47389 states, 29581 states have (on average 1.3419086575842603) internal successors, (39695), 30728 states have internal predecessors, (39695), 15153 states have call successors, (15153), 2655 states have call predecessors, (15153), 2654 states have return successors, (15152), 14983 states have call predecessors, (15152), 15152 states have call successors, (15152) [2021-11-23 03:07:53,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47389 states to 47389 states and 70000 transitions. [2021-11-23 03:07:53,142 INFO L78 Accepts]: Start accepts. Automaton has 47389 states and 70000 transitions. Word has length 60 [2021-11-23 03:07:53,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:07:53,142 INFO L470 AbstractCegarLoop]: Abstraction has 47389 states and 70000 transitions. [2021-11-23 03:07:53,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:07:53,143 INFO L276 IsEmpty]: Start isEmpty. Operand 47389 states and 70000 transitions. [2021-11-23 03:07:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:07:53,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:07:53,168 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:07:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:07:53,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:07:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:07:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1742697609, now seen corresponding path program 1 times [2021-11-23 03:07:53,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:07:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753598527] [2021-11-23 03:07:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:07:53,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:07:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:07:53,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:07:53,479 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:07:53,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753598527] [2021-11-23 03:07:53,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753598527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:07:53,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:07:53,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:07:53,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679934386] [2021-11-23 03:07:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:07:53,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:07:53,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:07:53,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:07:53,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:07:53,483 INFO L87 Difference]: Start difference. First operand 47389 states and 70000 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:08:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:01,317 INFO L93 Difference]: Finished difference Result 116815 states and 172641 transitions. [2021-11-23 03:08:01,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:08:01,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2021-11-23 03:08:01,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:01,719 INFO L225 Difference]: With dead ends: 116815 [2021-11-23 03:08:01,719 INFO L226 Difference]: Without dead ends: 69427 [2021-11-23 03:08:01,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:01,973 INFO L933 BasicCegarLoop]: 7096 mSDtfsCounter, 6193 mSDsluCounter, 3930 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 1672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6193 SdHoareTripleChecker+Valid, 10699 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1672 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:01,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6193 Valid, 10699 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1672 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 03:08:02,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69427 states. [2021-11-23 03:08:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69427 to 69421. [2021-11-23 03:08:05,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69421 states, 43367 states have (on average 1.3429105079899464) internal successors, (58238), 45050 states have internal predecessors, (58238), 22185 states have call successors, (22185), 3869 states have call predecessors, (22185), 3868 states have return successors, (22184), 21935 states have call predecessors, (22184), 22184 states have call successors, (22184) [2021-11-23 03:08:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69421 states to 69421 states and 102607 transitions. [2021-11-23 03:08:05,569 INFO L78 Accepts]: Start accepts. Automaton has 69421 states and 102607 transitions. Word has length 62 [2021-11-23 03:08:05,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:08:05,570 INFO L470 AbstractCegarLoop]: Abstraction has 69421 states and 102607 transitions. [2021-11-23 03:08:05,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:08:05,571 INFO L276 IsEmpty]: Start isEmpty. Operand 69421 states and 102607 transitions. [2021-11-23 03:08:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:08:05,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:08:05,593 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 03:08:05,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:08:05,593 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:08:05,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:08:05,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1787883777, now seen corresponding path program 1 times [2021-11-23 03:08:05,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:08:05,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231578272] [2021-11-23 03:08:05,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:08:05,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:08:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:08:05,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:08:05,874 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:08:05,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231578272] [2021-11-23 03:08:05,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231578272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:08:05,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:08:05,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:08:05,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247831846] [2021-11-23 03:08:05,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:08:05,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:08:05,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:08:05,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:08:05,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:05,876 INFO L87 Difference]: Start difference. First operand 69421 states and 102607 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:08:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:08:13,271 INFO L93 Difference]: Finished difference Result 170236 states and 251791 transitions. [2021-11-23 03:08:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:08:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 64 [2021-11-23 03:08:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:08:13,835 INFO L225 Difference]: With dead ends: 170236 [2021-11-23 03:08:13,835 INFO L226 Difference]: Without dead ends: 100816 [2021-11-23 03:08:14,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:08:14,102 INFO L933 BasicCegarLoop]: 7122 mSDtfsCounter, 3932 mSDsluCounter, 7860 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3932 SdHoareTripleChecker+Valid, 14328 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:08:14,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3932 Valid, 14328 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1325 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 03:08:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100816 states.